fix: added missing i18n en entries

updated tasktrove banner

.dockerignore

@@ -7,3 +7,17 @@ Dockerfile
 node_modules
 npm-debug.log
 data
+CLAUDE.md
+docs/
+Budfile
+PLAN.md
+/backups/
+/data.bak/
+/coverage/
+*.md
+!README.md
+!CHANGELOG.md
+tags
+tsconfig.tsbuildinfo
+.env.local
+.env.*.local

.github/workflows/docker-publish.yml

@@ -1,95 +0,0 @@
-name: Docker Build and Publish
-
-on:
-  push:
-    branches:
-      - main
-      - github-actions
-
-jobs:
-  build-and-push:
-    runs-on: ubuntu-latest
-    outputs:
-      EXISTS: ${{ steps.check-version.outputs.EXISTS }}
-      VERSION: ${{ steps.package-version.outputs.VERSION }}
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: "20"
-
-      - name: Get version from package.json
-        id: package-version
-        run: echo "VERSION=$(node -p "require('./package.json').version")" >> $GITHUB_OUTPUT
-
-      - name: Login to DockerHub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
-      - name: Check if version exists
-        id: check-version
-        run: |
-          if docker pull dohsimpson/habittrove:v${{ steps.package-version.outputs.VERSION }} 2>/dev/null; then
-            echo "EXISTS=true" >> $GITHUB_OUTPUT
-          else
-            echo "EXISTS=false" >> $GITHUB_OUTPUT
-          fi
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build and push Docker images
-        uses: docker/build-push-action@v5
-        with:
-          context: .
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: |
-            ${{ steps.check-version.outputs.EXISTS == 'false' && format('dohsimpson/habittrove:v{0}', steps.package-version.outputs.VERSION) || '' }}
-            ${{ steps.check-version.outputs.EXISTS == 'false' && 'dohsimpson/habittrove:latest' || '' }}
-            dohsimpson/habittrove:dev
-
-  deploy-demo:
-    runs-on: ubuntu-latest
-    needs: build-and-push
-    # demo tracks the latest tag
-    if: needs.build-and-push.outputs.EXISTS == 'false'
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions-hub/kubectl@master
-        env:
-          KUBE_CONFIG: ${{ secrets.KUBE_CONFIG }}
-        with:
-          args: rollout restart -n ${{ secrets.KUBE_NAMESPACE }} deploy/${{ secrets.KUBE_DEPLOYMENT }}
-
-  create-release:
-    runs-on: ubuntu-latest
-    needs: build-and-push
-    if: needs.build-and-push.outputs.EXISTS == 'false'
-    permissions:
-      contents: write
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Create GitHub release
-        env:
-          GH_TOKEN: ${{ secrets.GH_TOKEN }}
-          VERSION: ${{ needs.build-and-push.outputs.VERSION }}
-        run: |
-          # Extract release notes from CHANGELOG.md
-          notes=$(awk -v version="$VERSION" '
-            $0 ~ "## Version " version {flag=1;next}
-            $0 ~ "## Version " && flag {exit}
-            flag' CHANGELOG.md)
-
-          gh release create "v$VERSION" \
-              --repo="$GITHUB_REPOSITORY" \
-              --title="v$VERSION" \
-              --notes="$notes"

.github/workflows/release.yml

@@ -0,0 +1,40 @@
+name: Create and publish a Docker image to Github Container Registry
+
+on:
+  push:
+    tags:
+      - v*
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  create-and-publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/test.yml

@@ -1,25 +0,0 @@
-name: Unit Tests
-
-on:
-  pull_request:
-    branches:
-      - main
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Set up Bun
-        uses: oven-sh/setup-bun@v1
-        with:
-          bun-version: latest
-
-      - name: Install dependencies
-        run: bun install
-
-      - name: Run unit tests
-        run: bun test

.gitignore

@@ -41,6 +41,11 @@ yarn-error.log*
 next-env.d.ts
 
 # customize
-data/*
+/data/*
+/data.*/*
 Budfile
 certificates
+/backups/*
+CLAUDE.md
+
+CHANGELOG.md.tmp

.husky/pre-commit

@@ -1,7 +1,11 @@
-if git diff --cached --name-only --diff-filter=d | xargs grep -n '🪚'; then
+#!/bin/sh
-  echo "Error: Found debug marker 🪚 in these files:"
+# Check that package.json version exists in CHANGELOG.md
-  git diff --cached --name-only --diff-filter=d | xargs grep -n '🪚' | awk -F: '{print "  " $1 ":" $2}'
+VERSION=$(node -p "require('./package.json').version")
+if ! grep -q "## Version $VERSION" CHANGELOG.md; then
+  echo "❌ Error: Version $VERSION from package.json not found in CHANGELOG.md"
+  echo "Please add an entry for version $VERSION in CHANGELOG.md"
   exit 1
 fi
+echo "✅ Version $VERSION found in CHANGELOG.md"
 
-npm run typecheck && npm run test
+npm run typecheck && npm run lint && npm run test

.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+    "i18n-ally.localesPaths": [
+        "i18n",
+        "messages"
+    ]
+}

CHANGELOG.md

@@ -1,5 +1,258 @@
 # Changelog
 
+## Version 0.2.29
+
+### Added
+
+* ✏️ Freehand drawing capability for habits and wishlist items
+
+### Fixed
+
+* Wishlist and Habit card layout - time and rewards sections now stay at bottom regardless of description length
+* Wishlist card user avatars now appear on same row as title for consistency with habit cards
+
+## Version 0.2.28
+
+### Added
+
+* Server permission checking system to validate data directory access on startup
+* Permission error display with troubleshooting guidance and recheck functionality
+
+## Version 0.2.27
+
+### Fixed
+
+* Mobile navigation text centering and sizing for multi-word translations
+
+## Version 0.2.26
+
+### Improved
+
+* Docker build performance optimization with cache mounts
+
+## Version 0.2.25
+
+### Added
+
+* 🌍 Added Catalan language support (Català)
+
+### Fixed
+
+* Translation files consistency: Added missing UserForm keys to English and Korean translations
+
+## Version 0.2.24
+
+### Added
+
+* 🌍 Added Korean language support (한국어)
+
+## Version 0.2.23
+
+### Fixed
+
+* floating number coin balance (#155)
+* disable freshness check if browser does not support web crypto (#161)
+
+### Improved
+
+* use transparent background PWA icon with correct text (#103)
+* display icon in logo
+
+## Version 0.2.22
+
+### Added
+
+* auto check data freshness on interval (#138)
+* warn about out-of-sync data
+
+## Version 0.2.21
+
+### Fixed
+
+* emoji picker overlay issue (#150)
+
+## Version 0.2.20
+
+### Fixed
+
+* coin balance shows correct value for selected user in coin management view (#151)
+
+### Improved
+
+* refactor code to remove client-helpers hook
+
+## Version 0.2.19
+
+### Fixed
+
+* settings button not working
+* fixed delete dialog modal blocks page interaction (#149)
+* disable submit button when frequency is invaid
+
+## Version 0.2.18
+
+### Improved
+
+* nicer loading UI (#147)
+* header and navigation code refactor
+
+## Version 0.2.17
+
+### Fixed
+
+* fix emoji selector (#142)
+* fix about modal (#145)
+
+## Version 0.2.16
+
+### Improved
+
+* move delete user button to user form
+* disable deleting user on demo instance
+
+## Version 0.2.15
+
+### Improved
+
+* max coins set to 9999, to prevent js large number precision issue (#137)
+
+## Version 0.2.14
+
+### Added
+
+* support deleting user (#93)
+
+## Version 0.2.13
+
+### Fixed
+
+* fix responsive design on mobile (#134)
+* fix translation (#132)
+* fix latest docker tag auto build (#131)
+
+## Version 0.2.12
+
+### Added
+
+* 🌍 Added multi-language support! Users can now select their preferred language in settings.
+* Supported languages: English, Español (Spanish), Deutsch (German), Français (French), Русский (Russian), 简体中文 (Simplified Chinese) and 日本語 (Japanese).
+
+## Version 0.2.11
+
+### Added
+
+* support searching and sorting in habit list
+
+### Improved
+
+* Show overdue tasks in daily overview
+* Context menu option for tasks changed from "Move to Today" to "Move to Tomorrow"
+* More context menu items in daily overview
+* code refactor for context menu and daily overview item section
+
+
+## Version 0.2.10
+
+### Improved
+
+* performance optimization: faster load time for large data set
+
+## Version 0.2.9
+
+### Added
+
+* Auto backup feature: Automatically backs up data
+* Backup rotation: Keeps the last 7 daily backups
+* Setting to enable/disable auto backup.
+
+## Version 0.2.8
+
+### Added
+
+* notification for admin users on shared habit / wishlist completion (#92)
+
+## Version 0.2.7
+
+### Added
+
+* visual pin indicators for pinned habits/tasks
+* pin/unpin options in context menus
+* support click and right-click context menu in dailyoverview
+
+## Version 0.2.6
+
+### Added
+
+* support weekly / monthly intervals for recurring frequency (#99)
+* show error when frequency is unsupported (#56)
+* add task / habit button in habit view
+
+### Fixed
+
+* make user select modal scrollable
+
+## Version 0.2.5
+
+### Changed
+
+* bumped Nextjs version (cve-2025-29927)
+
+## Version 0.2.4
+
+### Added
+
+* admin can select user to view coins for that user
+
+### Fixed
+
+* fix disable password in demo instance (#74)
+
+## Version 0.2.3
+
+### Fixed
+
+* gracefully handle invalid rrule (#76)
+* fix long habit name overflow in daily (#75)
+* disable password in demo instance (#74)
+
+## Version 0.2.2
+
+### Changed
+
+* persist "show all" settings in browser (#72)
+
+### Fixed
+
+* nav bar spacing
+* completion count badge
+
+## Version 0.2.1
+
+### Changed
+
+* Added bottom padding for nav bar on iOS devices (#63)
+
+## Version 0.2.0
+
+### Added
+
+* Multi-user support with permissions system
+* Sharing habits and wishlist items with other users
+* show both tasks and habits in dashboard (#58)
+* show tasks in completion streak (#57)
+
+### BREAKING CHANGE
+
+* PLEASE BACK UP `data/` DIRECTORY BEFORE UPGRADE.
+* Requires AUTH_SECRET environment variable for user authentication. Generate a secure secret with: `openssl rand -base64 32`
+* Previous coin balance will be hidden. If this is undesirable, consider using manual adjustment to adjust coin balance after upgrade.
+
+## Version 0.1.30
+
+### Fixed
+
+- fix responsive layout on mobile for habits and wishlist when has archived items
+
 ## Version 0.1.29
 
 ### Fixed

CLAUDE.md

@@ -0,0 +1,100 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+HabitTrove is a gamified habit tracking PWA built with Next.js 15, TypeScript, and Jotai state management. Users earn coins for completing habits and can redeem them for rewards. Features multi-user support with admin capabilities and shared ownership of habits/wishlist items.
+
+## Essential Commands
+
+### Development
+- `npm run dev` - Start development server with Turbopack
+- `npm run setup:dev` - Full setup: installs bun, dependencies, runs typecheck and lint
+- `npm install --force` - Install dependencies (force flag required)
+
+### Quality Assurance (Run these before committing)
+- `npm run typecheck` - TypeScript type checking (required)
+- `npm run lint` - ESLint code linting (required)
+- `npm test` - Run tests with Bun
+- `npm run build` - Build production version
+
+### Docker Deployment
+- `npm run docker-build` - Build Docker image locally
+- `docker compose up -d` - Run with docker-compose (recommended)
+- Requires `AUTH_SECRET` environment variable: `openssl rand -base64 32`
+
+## Version Management
+
+### Creating a New Version
+1. Update version in `package.json`
+2. Update `CHANGELOG.md` with new version and changes (follow existing patterns in the file, keep entries concise - ideally 1 line per change)
+3. Run `npm run typecheck && npm run lint` to ensure code quality
+4. Commit changes: `git add . && git commit -m "feat: description"`
+  * Follow Conventional Commits Standard: `<type>[scope]: <description>` (e.g., `feat(auth): add OAuth integration`, `fix: resolve memory leak in task loader`).
+
+## Architecture Overview
+
+### State Management (Jotai)
+- **Central atoms**: `habitsAtom`, `coinsAtom`, `wishlistAtom`, `usersAtom` in `lib/atoms.ts`
+- **Derived atoms**: Computed values like `dailyHabitsAtom`, `coinsBalanceAtom`
+- **Business logic hooks**: `useHabits`, `useCoins`, `useWishlist` in `/hooks`
+
+### Data Models & Ownership
+- **Individual ownership**: `CoinTransaction` has single `userId`
+- **Shared ownership**: `Habit` and `WishlistItemType` have `userIds: string[]` array
+- **Admin features**: Admin users can view/manage any user's data via dropdown selectors
+- **Data persistence**: JSON files in `/data` directory with automatic `/backups`
+
+### Key Components Structure
+- **Feature components**: `HabitList`, `CoinsManager`, `WishlistManager` - main page components
+- **Modal components**: `AddEditHabitModal`, `AddEditWishlistItemModal`, `UserSelectModal`
+- **UI components**: `/components/ui` - shadcn/ui based components
+
+### Authentication & Users
+- NextAuth.js v5 with multi-user support
+- User permissions: regular users vs admin users
+- Admin dropdown patterns: Similar implementation across Habits/Wishlist pages (reference CoinsManager for pattern)
+
+### Internationalization
+- `next-intl` with messages in `/messages/*.json`
+- Supported languages: English, Spanish, German, French, Russian, Chinese, Japanese
+
+## Code Patterns
+
+### Component Structure
+```typescript
+// Standard component pattern:
+export default function ComponentName() {
+  const [data, setData] = useAtom(dataAtom)
+  const { businessLogicFunction } = useCustomHook()
+  // Component logic
+}
+```
+
+### Hook Patterns
+- Custom hooks accept options: `useHabits({ selectedUser?: string })`
+- Return destructured functions and computed values
+- Handle both individual and shared ownership models
+
+### Shared Ownership Pattern
+```typescript
+// Filtering for shared ownership:
+const userItems = allItems.filter(item => 
+  item.userIds && item.userIds.includes(targetUserId)
+)
+```
+
+### Admin Dropdown Pattern
+Reference `CoinsManager.tsx:107-119` for admin user selection implementation. Similar pattern should be applied to Habits and Wishlist pages.
+
+## Data Safety
+- Always backup `/data` before major changes
+- Test with existing data files to prevent data loss
+- Validate user permissions for all data operations
+- Handle migration scripts carefully (see PLAN.md for shared ownership migration)
+
+## Performance Considerations
+- State updates use immutable patterns
+- Large dataset filtering happens at hook level
+- Derived atoms prevent unnecessary re-renders

Dockerfile

@@ -1,56 +1,52 @@
 # syntax=docker.io/docker/dockerfile:1
 
-FROM --platform=$BUILDPLATFORM node:18-alpine AS base
+# Use build platform for base images to avoid emulation
+FROM --platform=$BUILDPLATFORM node:22-alpine AS base
 
 # Install dependencies only when needed
-FROM --platform=$BUILDPLATFORM base AS deps
+FROM base AS deps
-# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
 RUN apk add --no-cache libc6-compat
 WORKDIR /app
 
-# Install dependencies based on the preferred package manager
+# Use cache mounts for npm cache
 COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* .npmrc* ./
-RUN \
+RUN --mount=type=cache,target=/root/.npm \
   if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
-  # use --force flag until all deps supports react19
   elif [ -f package-lock.json ]; then npm ci --force; \
   elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
   else echo "Lockfile not found." && exit 1; \
   fi
 
 # Rebuild the source code only when needed
-FROM --platform=$BUILDPLATFORM base AS builder
+FROM base AS builder
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
 ENV NEXT_TELEMETRY_DISABLED=1
 
-RUN \
+# Use cache mount for Next.js cache
+RUN --mount=type=cache,target=/app/.next/cache \
   if [ -f yarn.lock ]; then yarn run build; \
   elif [ -f package-lock.json ]; then npm run build; \
   elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
   else echo "Lockfile not found." && exit 1; \
   fi
 
-# Production image, copy all the files and run next
+# Production image - use target platform
-FROM base AS runner
+FROM node:22-alpine AS runner
 WORKDIR /app
 
 ENV NODE_ENV=production
 ENV NEXT_TELEMETRY_DISABLED=1
 
-RUN addgroup --system --gid 1001 nodejs
+RUN addgroup --system --gid 1001 nodejs && \
-RUN adduser --system --uid 1001 nextjs
+    adduser --system --uid 1001 nextjs && \
-
+    mkdir -p /app/data /app/backups && \
-# Create data directory and set permissions
+    chown nextjs:nodejs /app/data /app/backups
-RUN mkdir -p /app/data && chown nextjs:nodejs /app/data
 
 COPY --from=builder /app/public ./public
 COPY --from=builder /app/CHANGELOG.md ./
-
-# Automatically leverage output traces to reduce image size
-# https://nextjs.org/docs/advanced-features/output-file-tracing
 COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 
@@ -61,6 +57,6 @@ EXPOSE 3000
 ENV PORT=3000
 ENV HOSTNAME="0.0.0.0"
 
-VOLUME ["/app/data"]
+VOLUME ["/app/data", "/app/backups"]
 
 CMD ["node", "server.js"]

README.md

@@ -1,12 +1,22 @@
-# HabitTrove
+# <img align="left" width="50" height="50" src="https://github.com/user-attachments/assets/99dcf223-3680-4b3a-8050-d9788f051682" /> HabitTrove
 
 HabitTrove is a gamified habit tracking application that helps you build and maintain positive habits by rewarding you with coins, which you can use to exchange for rewards.
 
-> **⚠️ Important:** HabitTrove is currently in beta. Please regularly backup your `data/` directory to prevent any potential data loss.
+## Differences to Upstream
 
-## Try the Demo
+I generally try to keep the `main` branch up to date with upstream features, merging tagged versions and mapping them to `<upstream-version>.0`.
 
-Want to try HabitTrove before installing? Visit the public [demo instance](https://habittrove.app.enting.org) to experience all features without any setup required. (do not store personal info. Data on the demo instance is reset daily)
+In this version I've taken steps to ensure a smoother experience and decreased the chance of the program bricking itself. This doesn't mean that it's completely stable, but I've fixed the most glaring bugs I encountered.
+
+Differences (as of writing) are:
+- resolved linting problems so you can actually commit things
+- added missing dependency
+- refactored adding habit modal to cause less errors
+- resolved undefined error
+- replaced dockerhub release flow with github
+- miscellaneous refactorings
+- split habits & tasks page into two different pages
+- only display "show all" if there are more than 4 entries
 
 ## Features
 
@@ -14,18 +24,18 @@ Want to try HabitTrove before installing? Visit the public [demo instance](https
 - 🏆 Earn coins for completing habits
 - 💰 Create a wishlist of rewards to redeem with earned coins
 - 📊 View your habit completion streaks and statistics
+- ✏️ Add freehand drawings to habits and wishlist items for visual reminders
 - 📅 Calendar heatmap to visualize your progress (WIP)
-- 🌙 Dark mode support (WIP)
+- 🌍 Multi-language support (English, Español, Català, Deutsch, Français, Русский, 简体中文, 한국어, 日本語)
-- 📲 Progressive Web App (PWA) support (Planned)
+- 🌙 Dark mode support
+- 📲 Progressive Web App (PWA) support
+- 💾 Automatic daily backups with rotation
 
 ## Usage
 
 1. **Creating Habits**: Click the "Add Habit" button to create a new habit. Set a name, description, and coin reward.
-
 2. **Tracking Habits**: Mark habits as complete on your dashboard. Each completion earns you the specified coins.
-
 3. **Wishlist**: Add rewards to your wishlist that you can redeem with earned coins.
-
 4. **Statistics**: View your progress through the heatmap and streak counters.
 
 ## Docker Deployment
@@ -39,18 +49,30 @@ The easiest way to run HabitTrove is using our pre-built Docker images from Dock
 1. First, prepare the data directory with correct permissions:
 
 ```bash
-mkdir -p data
+mkdir -p data backups
-chown -R 1001:1001 data  # Required for the nextjs user in container
+chown -R 1001:1001 data backups # Required for the nextjs user in container
 ```
 
 2. Then run using either method:
 
 ```bash
+# Generate a secure authentication secret
+export AUTH_SECRET=$(openssl rand -base64 32)
+echo $AUTH_SECRET
+
 # Using docker-compose (recommended)
+## Update the AUTH_SECRET environment variable in docker-compose.yaml
+nano docker-compose.yaml
+## Start the container
 docker compose up -d
 
 # Or using docker run directly
-docker run -d -p 3000:3000 -v ./data:/app/data dohsimpson/habittrove
+docker run -d \
+  -p 3000:3000 \
+  -v ./data:/app/data \
+  -v ./backups:/app/backups \ # Add this line to map the backups directory
+  -e AUTH_SECRET=$AUTH_SECRET \
+  ghcr.io/manindark/habittrove
 ```
 
 Available image tags:
@@ -62,9 +84,11 @@ Available image tags:
 Choose your tag based on needs:
 
 - Use `latest` for general production use
-- Use version tags (e.g., `v0.1.4`) for reproducible deployments
+- Use version tags (e.g., `v0.2.9`) for reproducible deployments
 - Use `dev` for testing new features
 
+**Note on Volumes:** The application stores user data in `/app/data` and backups in `/app/backups` inside the container. The examples above map `./data` and `./backups` from your host machine to these container directories. Ensure these host directories exist and have the correct permissions (`chown -R 1001:1001 data backups`).
+
 ### Building Locally
 
 If you want to build the image locally (useful for development):
@@ -95,7 +119,7 @@ To contribute to HabitTrove, you'll need to set up a development environment. He
 1. Clone the repository and navigate to the project directory:
 
 ```bash
-git clone https://github.com/dohsimpson/habittrove.git
+git clone https://github.com/ManInDark/HabitTrove.git
 cd habittrove
 ```
 
@@ -148,7 +172,7 @@ Run these commands regularly during development to catch issues early.
 
 ## Contributing
 
-We welcome feature requests and bug reports! Please [open an issue](https://github.com/dohsimpson/habittrove/issues/new). We do not accept pull request at the moment.
+We welcome feature requests and bug reports! Please [open an issue](https://github.com/ManInDark/habittrove/issues/new).
 
 ## License
 

app/actions/data.ts

@@ -1,20 +1,37 @@
 'use server'
 
-import fs from 'fs/promises'
+import { getCurrentUser, saltAndHashPassword, verifyPassword } from "@/lib/server-helpers";
-import path from 'path'
 import {
-  HabitsData,
   CoinsData,
   CoinTransaction,
-  TransactionType,
-  WishlistItemType,
-  WishlistData,
-  Settings,
-  DataType,
   DATA_DEFAULTS,
-  getDefaultSettings
+  DataType,
-} from '@/lib/types'
+  getDefaultCoinsData,
-import { d2t, getNow } from '@/lib/utils';
+  getDefaultHabitsData,
+  getDefaultSettings,
+  getDefaultUsersData,
+  getDefaultWishlistData,
+  HabitsData,
+  Permission,
+  ServerSettings,
+  Settings,
+  TransactionType,
+  User,
+  UserData,
+  WishlistData,
+  WishlistItemType
+} from '@/lib/types';
+import { d2t, generateCryptoHash, getNow, prepareDataForHashing } from '@/lib/utils';
+import { signInSchema } from '@/lib/zod';
+import fs from 'fs/promises';
+import _ from 'lodash';
+import path from 'path';
+
+
+
+type ResourceType = 'habit' | 'wishlist' | 'coins'
+type ActionType = 'write' | 'interact'
+
 
 function getDefaultData<T>(type: DataType): T {
   return DATA_DEFAULTS[type]() as T;
@@ -29,6 +46,27 @@ async function ensureDataDir() {
   }
 }
 
+// --- Backup Debug Action ---
+export async function triggerManualBackup(): Promise<{ success: boolean; message: string }> {
+  // Optional: Add extra permission check if needed for debug actions
+  // const user = await getCurrentUser();
+  // if (!user?.isAdmin) {
+  //   return { success: false, message: "Permission denied." };
+  // }
+
+  console.log("Manual backup trigger requested...");
+  try {
+    // Import runBackup locally to avoid potential circular dependencies if moved
+    const { runBackup } = await import('@/lib/backup');
+    await runBackup();
+    console.log("Manual backup trigger completed successfully.");
+    return { success: true, message: "Backup process completed successfully." };
+  } catch (error) {
+    console.error("Manual backup trigger failed:", error);
+    return { success: false, message: `Backup failed: ${error instanceof Error ? error.message : 'Unknown error'}` };
+  }
+}
+
 async function loadData<T>(type: DataType): Promise<T> {
   try {
     await ensureDataDir()
@@ -38,14 +76,14 @@ async function loadData<T>(type: DataType): Promise<T> {
       await fs.access(filePath)
     } catch {
       // File doesn't exist, create it with default data
-      const initialData = getDefaultData(type)
+      const initialData = getDefaultData<T>(type)
       await fs.writeFile(filePath, JSON.stringify(initialData, null, 2))
       return initialData as T
     }
 
     // File exists, read and return its contents
     const data = await fs.readFile(filePath, 'utf8')
-    const jsonData = JSON.parse(data)
+    const jsonData = JSON.parse(data) as T
     return jsonData
   } catch (error) {
     console.error(`Error loading ${type} data:`, error)
@@ -55,6 +93,9 @@ async function loadData<T>(type: DataType): Promise<T> {
 
 async function saveData<T>(type: DataType, data: T): Promise<void> {
   try {
+    const user = await getCurrentUser()
+    if (!user) throw new Error('User not authenticated')
+
     await ensureDataDir()
     const filePath = path.join(process.cwd(), 'data', `${type}.json`)
     const saveData = data
@@ -64,9 +105,44 @@ async function saveData<T>(type: DataType, data: T): Promise<void> {
   }
 }
 
+/**
+ * Calculates the server's global freshness token based on all core data files.
+ * This is an expensive operation as it reads all data files.
+ */
+async function calculateServerFreshnessToken(): Promise<string | null> {
+  try {
+    const [settings, habits, coins, wishlist, users] = await Promise.all([
+      loadSettings(),
+      loadHabitsData(),
+      loadCoinsData(),
+      loadWishlistData(),
+      loadUsersData()
+    ]);
+
+    const dataString = prepareDataForHashing(
+      settings,
+      habits,
+      coins,
+      wishlist,
+      users
+    );
+    return generateCryptoHash(dataString);
+  } catch (error) {
+    console.error("Error calculating server freshness token:", error);
+    throw error;
+  }
+}
+
 // Wishlist specific functions
 export async function loadWishlistData(): Promise<WishlistData> {
-  return loadData<WishlistData>('wishlist')
+  const user = await getCurrentUser()
+  if (!user) return getDefaultWishlistData<WishlistData>()
+
+  const data = await loadData<WishlistData>('wishlist')
+  return {
+    ...data,
+    items: data.items.filter(x => user.isAdmin || x.userIds?.includes(user.id))
+  }
 }
 
 export async function loadWishlistItems(): Promise<WishlistItemType[]> {
@@ -74,31 +150,94 @@ export async function loadWishlistItems(): Promise<WishlistItemType[]> {
   return data.items
 }
 
-export async function saveWishlistItems(items: WishlistItemType[]): Promise<void> {
+export async function saveWishlistItems(data: WishlistData): Promise<void> {
-  return saveData('wishlist', { items })
+  const user = await getCurrentUser()
+
+  data.items = data.items.map(wishlist => ({
+    ...wishlist,
+    userIds: wishlist.userIds || (user ? [user.id] : undefined)
+  }))
+
+  if (!user?.isAdmin) {
+    const existingData = await loadData<WishlistData>('wishlist')
+    existingData.items = existingData.items.filter(x => user?.id && !x.userIds?.includes(user?.id))
+    data.items = [
+      ...existingData.items,
+      ...data.items
+    ]
+  }
+
+  return saveData('wishlist', data)
 }
 
 // Habits specific functions
 export async function loadHabitsData(): Promise<HabitsData> {
-  return loadData<HabitsData>('habits')
+  const user = await getCurrentUser()
+  if (!user) return getDefaultHabitsData<HabitsData>()
+  const data = await loadData<HabitsData>('habits')
+  return {
+    habits: data.habits.filter(x => user.isAdmin || x.userIds?.includes(user.id))
+  }
 }
 
 export async function saveHabitsData(data: HabitsData): Promise<void> {
-  return saveData('habits', data)
+  const user = await getCurrentUser()
+  // Create clone of input data
+  const newData = _.cloneDeep(data)
+
+  // Map habits with user IDs
+  newData.habits = newData.habits.map(habit => ({
+    ...habit,
+    userIds: habit.userIds || (user ? [user.id] : undefined)
+  }))
+
+  if (!user?.isAdmin) {
+    const existingData = await loadHabitsData();
+    const existingHabits = existingData.habits.filter(x => user?.id && !x.userIds?.includes(user?.id))
+    newData.habits = [
+      ...existingHabits,
+      ...newData.habits
+    ]
+  }
+
+  return saveData('habits', newData)
 }
 
 
 // Coins specific functions
 export async function loadCoinsData(): Promise<CoinsData> {
   try {
-    return await loadData<CoinsData>('coins')
+    const user = await getCurrentUser()
+    if (!user) return getDefaultCoinsData<CoinsData>()
+    const data = await loadData<CoinsData>('coins')
+    return {
+      ...data,
+      transactions: user.isAdmin ? data.transactions : data.transactions.filter(x => x.userId === user.id)
+    }
   } catch {
-    return { balance: 0, transactions: [] }
+    return getDefaultCoinsData<CoinsData>()
   }
 }
 
 export async function saveCoinsData(data: CoinsData): Promise<void> {
-  return saveData('coins', data)
+  const user = await getCurrentUser()
+
+  // Create clones of the data
+  const newData = _.cloneDeep(data)
+  newData.transactions = newData.transactions.map(transaction => ({
+    ...transaction,
+    userId: transaction.userId || user?.id
+  }))
+
+  if (!user?.isAdmin) {
+    const existingData = await loadData<CoinsData>('coins')
+    const existingTransactions = existingData.transactions.filter(x => user?.id && x.userId !== user.id)
+    newData.transactions = [
+      ...newData.transactions,
+      ...existingTransactions
+    ]
+  }
+  return saveData('coins', newData)
 }
 
 export async function addCoins({
@@ -107,13 +246,16 @@ export async function addCoins({
   type = 'MANUAL_ADJUSTMENT',
   relatedItemId,
   note,
+  userId,
 }: {
   amount: number
   description: string
   type?: TransactionType
   relatedItemId?: string
   note?: string
+  userId?: string
 }): Promise<CoinsData> {
+  const currentUser = await getCurrentUser()
   const data = await loadCoinsData()
   const newTransaction: CoinTransaction = {
     id: crypto.randomUUID(),
@@ -122,7 +264,8 @@ export async function addCoins({
     description,
     timestamp: d2t({ dateTime: getNow({}) }),
     ...(relatedItemId && { relatedItemId }),
-    ...(note && note.trim() !== '' && { note })
+    ...(note && note.trim() !== '' && { note }),
+    userId: userId || currentUser?.id
   }
 
   const newData: CoinsData = {
@@ -135,9 +278,11 @@ export async function addCoins({
 }
 
 export async function loadSettings(): Promise<Settings> {
-  const defaultSettings = getDefaultSettings()
+  const defaultSettings = getDefaultSettings<Settings>()
 
   try {
+    const user = await getCurrentUser()
+    if (!user) return defaultSettings
     const data = await loadData<Settings>('settings')
     return { ...defaultSettings, ...data }
   } catch {
@@ -155,13 +300,16 @@ export async function removeCoins({
   type = 'MANUAL_ADJUSTMENT',
   relatedItemId,
   note,
+  userId,
 }: {
   amount: number
   description: string
   type?: TransactionType
   relatedItemId?: string
   note?: string
+  userId?: string
 }): Promise<CoinsData> {
+  const currentUser = await getCurrentUser()
   const data = await loadCoinsData()
   const newTransaction: CoinTransaction = {
     id: crypto.randomUUID(),
@@ -170,7 +318,8 @@ export async function removeCoins({
     description,
     timestamp: d2t({ dateTime: getNow({}) }),
     ...(relatedItemId && { relatedItemId }),
-    ...(note && note.trim() !== '' && { note })
+    ...(note && note.trim() !== '' && { note }),
+    userId: userId || currentUser?.id
   }
 
   const newData: CoinsData = {
@@ -182,7 +331,7 @@ export async function removeCoins({
   return newData
 }
 
-export async function uploadAvatar(formData: FormData) {
+export async function uploadAvatar(formData: FormData): Promise<string> {
   const file = formData.get('avatar') as File
   if (!file) throw new Error('No file provided')
 
@@ -203,18 +352,7 @@ export async function uploadAvatar(formData: FormData) {
   const buffer = await file.arrayBuffer()
   await fs.writeFile(filePath, Buffer.from(buffer))
 
-  // Update settings with new avatar path
+  return `/data/avatars/${filename}`
-  const settings = await loadSettings()
-  const newSettings = {
-    ...settings,
-    profile: {
-      ...settings.profile,
-      avatarPath: `/data/avatars/${filename}`
-    }
-  }
-
-  await saveSettings(newSettings)
-  return newSettings;
 }
 
 export async function getChangelog(): Promise<string> {
@@ -226,3 +364,259 @@ export async function getChangelog(): Promise<string> {
     return '# Changelog\n\nNo changelog available.'
   }
 }
+
+// user logic
+export async function loadUsersData(): Promise<UserData> {
+  try {
+    return await loadData<UserData>('auth')
+  } catch {
+    return getDefaultUsersData<UserData>()
+  }
+}
+
+export async function saveUsersData(data: UserData): Promise<void> {
+  return saveData('auth', data)
+}
+
+export async function getUser(username: string, plainTextPassword?: string): Promise<User | null> {
+  const data = await loadUsersData()
+
+  const user = data.users.find(user => user.username === username)
+  if (!user) return null
+
+  // Verify the plaintext password against the stored salt:hash
+  const isValidPassword = verifyPassword(plainTextPassword, user.password)
+  if (!isValidPassword) return null
+
+  return user
+}
+
+export async function createUser(formData: FormData): Promise<User> {
+  const username = formData.get('username') as string;
+  let password = formData.get('password') as string | undefined;
+  const avatarPath = formData.get('avatarPath') as string;
+  const permissions = formData.get('permissions') ?
+    JSON.parse(formData.get('permissions') as string) as Permission[] :
+    undefined;
+
+  if (password === null) password = undefined
+  // Validate username and password against schema
+  await signInSchema.parseAsync({ username, password });
+
+  const data = await loadUsersData();
+
+  // Check if username already exists
+  if (data.users.some(user => user.username === username)) {
+    throw new Error('Username already exists');
+  }
+
+  const hashedPassword = password ? saltAndHashPassword(password) : undefined;
+
+
+  const newUser: User = {
+    id: crypto.randomUUID(),
+    username,
+    password: hashedPassword,
+    permissions,
+    isAdmin: false,
+    lastNotificationReadTimestamp: undefined,
+    ...(avatarPath && { avatarPath })
+  };
+
+  const newData: UserData = {
+    users: [...data.users, newUser]
+  };
+
+  await saveUsersData(newData);
+  return newUser;
+}
+
+export async function updateUser(userId: string, updates: Partial<Omit<User, 'id' | 'password'>>): Promise<User> {
+  const data = await loadUsersData()
+  const userIndex = data.users.findIndex(user => user.id === userId)
+
+  if (userIndex === -1) {
+    throw new Error('User not found')
+  }
+
+  // If username is being updated, check for duplicates
+  if (updates.username) {
+    const isDuplicate = data.users.some(
+      user => user.username === updates.username && user.id !== userId
+    )
+    if (isDuplicate) {
+      throw new Error('Username already exists')
+    }
+  }
+
+  const updatedUser = {
+    ...data.users[userIndex],
+    ...updates
+  }
+
+  const newData: UserData = {
+    users: [
+      ...data.users.slice(0, userIndex),
+      updatedUser,
+      ...data.users.slice(userIndex + 1)
+    ]
+  }
+
+  await saveUsersData(newData)
+  return updatedUser
+}
+
+export async function updateUserPassword(userId: string, newPassword?: string): Promise<void> {
+  const data = await loadUsersData()
+  const userIndex = data.users.findIndex(user => user.id === userId)
+
+  if (userIndex === -1) {
+    throw new Error('User not found')
+  }
+
+  const hashedPassword = newPassword ? saltAndHashPassword(newPassword) : ''
+
+  const updatedUser = {
+    ...data.users[userIndex],
+    password: hashedPassword
+  }
+
+  const newData: UserData = {
+    users: [
+      ...data.users.slice(0, userIndex),
+      updatedUser,
+      ...data.users.slice(userIndex + 1)
+    ]
+  }
+
+  await saveUsersData(newData)
+}
+
+export async function deleteUser(userId: string): Promise<void> {
+  // Load all necessary data
+  const wishlistData = await loadData<WishlistData>('wishlist')
+  const habitsData = await loadData<HabitsData>('habits')
+  const coinsData = await loadData<CoinsData>('coins')
+  const authData = await loadUsersData()
+
+  // Process Wishlist Data
+  const updatedWishlistItems = wishlistData.items.reduce((acc, item) => {
+    if (item.userIds?.includes(userId)) {
+      if (item.userIds.length === 1) {
+        // Remove item if this is the only user
+        return acc
+      } else {
+        // Remove userId from item's userIds
+        acc.push({
+          ...item,
+          userIds: item.userIds.filter(id => id !== userId)
+        })
+      }
+    } else {
+      // Keep item as is
+      acc.push(item)
+    }
+    return acc
+  }, [] as WishlistItemType[])
+  wishlistData.items = updatedWishlistItems
+  await saveData('wishlist', wishlistData)
+
+  // Process Habits Data
+  const updatedHabits = habitsData.habits.reduce((acc, habit) => {
+    if (habit.userIds?.includes(userId)) {
+      if (habit.userIds.length === 1) {
+        // Remove habit if this is the only user
+        return acc
+      } else {
+        // Remove userId from habit's userIds
+        acc.push({
+          ...habit,
+          userIds: habit.userIds.filter(id => id !== userId)
+        })
+      }
+    } else {
+      // Keep habit as is
+      acc.push(habit)
+    }
+    return acc
+  }, [] as HabitsData['habits'])
+  habitsData.habits = updatedHabits
+  await saveData('habits', habitsData)
+
+  // Process Coins Data
+  coinsData.transactions = coinsData.transactions.filter(
+    transaction => transaction.userId !== userId
+  )
+  // Recalculate balance
+  coinsData.balance = coinsData.transactions.reduce(
+    (sum, transaction) => sum + transaction.amount,
+    0
+  )
+  await saveData('coins', coinsData)
+
+  // Delete User from Auth Data
+  const userIndex = authData.users.findIndex(user => user.id === userId)
+
+  if (userIndex === -1) {
+    throw new Error('User not found')
+  }
+
+  authData.users = [
+    ...authData.users.slice(0, userIndex),
+    ...authData.users.slice(userIndex + 1)
+  ]
+
+  await saveUsersData(authData)
+}
+
+export async function updateLastNotificationReadTimestamp(userId: string, timestamp: string): Promise<void> {
+  const data = await loadUsersData()
+  const userIndex = data.users.findIndex(user => user.id === userId)
+
+  if (userIndex === -1) {
+    throw new Error('User not found for updating notification timestamp')
+  }
+
+  const updatedUser = {
+    ...data.users[userIndex],
+    lastNotificationReadTimestamp: timestamp
+  }
+
+  const newData: UserData = {
+    users: [
+      ...data.users.slice(0, userIndex),
+      updatedUser,
+      ...data.users.slice(userIndex + 1)
+    ]
+  }
+
+  await saveUsersData(newData)
+}
+
+
+export async function loadServerSettings(): Promise<ServerSettings> {
+  return {
+    isDemo: !!process.env.DEMO,
+  }
+}
+
+/**
+ * Checks if the client's data is fresh by comparing its token with the server's token.
+ * @param clientToken The freshness token calculated by the client.
+ * @returns A promise that resolves to an object { isFresh: boolean }.
+ */
+export async function checkDataFreshness(clientToken: string): Promise<{ isFresh: boolean }> {
+  try {
+    const serverToken = await calculateServerFreshnessToken();
+    const isFresh = clientToken === serverToken;
+    if (!isFresh) {
+      console.log(`Data freshness check: Stale. Client token: ${clientToken}, Server token: ${serverToken}`);
+    }
+    return { isFresh };
+  } catch (error) {
+    console.error("Error in checkDataFreshness:", error);
+    // If server fails to determine its token, assume client might be stale to be safe,
+    // or handle error reporting differently.
+    return { isFresh: false };
+  }
+}

app/actions/user.ts

@@ -0,0 +1,27 @@
+"use server"
+
+import { signIn as signInNextAuth, signOut as signOutNextAuth } from '@/auth';
+
+export async function signIn(username: string, password: string) {
+  try {
+    const result = await signInNextAuth("credentials", {
+      username,
+      password,
+      redirect: false, // This needs to be passed as an option, not as form data
+    });
+    
+    return result;
+  } catch (error) {
+    throw new Error("Invalid credentials");
+  }
+}
+
+export async function signOut() {
+  try {
+    const result = await signOutNextAuth({
+        redirect: false,
+    })
+  } catch (error) {
+    throw new Error("Failed to sign out");
+  }
+}

app/api/auth/[...nextauth]/route.ts

@@ -0,0 +1,2 @@
+import { handlers } from "@/auth"
+export const { GET, POST } = handlers

app/api/user/delete/route.ts

@@ -0,0 +1,50 @@
+import { NextResponse } from 'next/server'
+import { auth } from '@/auth'
+import { deleteUser } from '@/app/actions/data'
+import { getCurrentUser } from '@/lib/server-helpers'
+
+export async function POST(req: Request) {
+  try {
+    const session = await auth()
+    if (!session?.user?.id) {
+      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
+    }
+
+    const currentUserId = session.user.id
+    const currentUser = await getCurrentUser()
+
+    if (!currentUser) {
+      // This case should ideally not happen if session.user.id exists,
+      // but as a safeguard:
+      return NextResponse.json({ error: 'Unauthorized: User not found in system' }, { status: 401 })
+    }
+
+    let userIdToDelete: string
+    try {
+      const body = await req.json()
+      userIdToDelete = body.userId
+    } catch (error) {
+      return NextResponse.json({ error: 'Invalid request body: Could not parse JSON.' }, { status: 400 })
+    }
+    
+
+    if (!userIdToDelete) {
+      return NextResponse.json({ error: 'Bad Request: userId is required' }, { status: 400 })
+    }
+
+    // Security Check: Users can only delete their own account unless they are an admin.
+    if (!currentUser.isAdmin && userIdToDelete !== currentUserId) {
+      return NextResponse.json({ error: 'Forbidden: You do not have permission to delete this user.' }, { status: 403 })
+    }
+
+    await deleteUser(userIdToDelete)
+
+    return NextResponse.json({ message: 'User deleted successfully' }, { status: 200 })
+  } catch (error) {
+    console.error('Error deleting user:', error)
+    if (error instanceof Error && error.message === 'User not found') {
+      return NextResponse.json({ error: 'User not found' }, { status: 404 })
+    }
+    return NextResponse.json({ error: 'Internal Server Error' }, { status: 500 })
+  }
+}

app/calendar/page.tsx

@@ -1,13 +1,8 @@
-import Layout from '@/components/Layout'
 import HabitCalendar from '@/components/HabitCalendar'
-import { ViewToggle } from '@/components/ViewToggle'
 
 export default function CalendarPage() {
   return (
-    <div className="flex flex-col gap-4">
+    <div className="flex flex-col">
-      <div className="flex justify-end">
-        {/* <ViewToggle /> */}
-      </div>
       <HabitCalendar />
     </div>
   )

app/coins/page.tsx

@@ -1,4 +1,3 @@
-import Layout from '@/components/Layout'
 import CoinsManager from '@/components/CoinsManager'
 
 export default function CoinsPage() {

app/debug/backup/page.tsx

@@ -0,0 +1,60 @@
+'use client'
+
+import { useState } from 'react';
+import { Button } from '@/components/ui/button';
+import { triggerManualBackup } from '@/app/actions/data'; // Import the server action
+import { Loader2 } from 'lucide-react'; // For loading indicator
+
+export default function DebugBackupPage() {
+  const [isLoading, setIsLoading] = useState(false);
+  const [statusMessage, setStatusMessage] = useState('');
+  const [isError, setIsError] = useState(false);
+
+  const handleBackupClick = async () => {
+    setIsLoading(true);
+    setStatusMessage('Starting backup...');
+    setIsError(false);
+
+    try {
+      const result = await triggerManualBackup();
+      setStatusMessage(result.message);
+      setIsError(!result.success);
+    } catch (error) {
+      console.error("Error calling triggerManualBackup action:", error);
+      setStatusMessage(`Client-side error: ${error instanceof Error ? error.message : 'Unknown error'}`);
+      setIsError(true);
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  return (
+    <div className="p-4">
+      <h1 className="text-xl font-bold mb-4">Debug Backup</h1>
+      <div className="bg-gray-100 dark:bg-gray-800 p-4 rounded space-y-4">
+        <p className="text-muted-foreground">
+          Click the button below to manually trigger the data backup process.
+          Check the server console logs for detailed output. Backups are stored in the `/backups` directory.
+        </p>
+        <Button
+          onClick={handleBackupClick}
+          disabled={isLoading}
+        >
+          {isLoading ? (
+            <>
+              <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+              Running Backup...
+            </>
+          ) : (
+            'Run Manual Backup Now'
+          )}
+        </Button>
+        {statusMessage && (
+          <div className={`mt-4 p-3 rounded ${isError ? 'bg-red-100 dark:bg-red-900 text-red-700 dark:text-red-200' : 'bg-green-100 dark:bg-green-900 text-green-700 dark:text-green-200'}`}>
+            {statusMessage}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

app/debug/habits/page.tsx

@@ -0,0 +1,69 @@
+'use client'
+
+import { habitsAtom, settingsAtom } from "@/lib/atoms";
+import { Habit } from "@/lib/types";
+import { useAtom } from "jotai";
+import { DateTime } from "luxon";
+
+
+
+type CompletionCache = {
+  [dateKey: string]: {  // dateKey format: "YYYY-MM-DD"
+    [habitId: string]: number  // number of completions on that date
+  }
+}
+
+
+export default function DebugPage() {
+  const [habits] = useAtom(habitsAtom);
+  const [settings]  = useAtom(settingsAtom);
+
+  function buildCompletionCache(habits: Habit[], timezone: string): CompletionCache {
+    const cache: CompletionCache = {};
+
+    habits.forEach(habit => {
+      habit.completions.forEach(utcTimestamp => {
+        // Convert UTC timestamp to local date string in specified timezone
+        const localDate = DateTime
+          .fromISO(utcTimestamp)
+          .setZone(timezone)
+          .toFormat('yyyy-MM-dd');
+
+        if (!cache[localDate]) {
+          cache[localDate] = {};
+        }
+
+        // Increment completion count for this habit on this date
+        cache[localDate][habit.id] = (cache[localDate][habit.id] || 0) + 1;
+      });
+    });
+
+    return cache;
+  }
+
+  function getCompletedHabitsForDate(
+    habits: Habit[],
+    date: DateTime,
+    timezone: string,
+    completionCache: CompletionCache
+  ): Habit[] {
+    const dateKey = date.setZone(timezone).toFormat('yyyy-MM-dd');
+    const dateCompletions = completionCache[dateKey] || {};
+
+    return habits.filter(habit => {
+      const completionsNeeded = habit.targetCompletions || 1;
+      const completionsAchieved = dateCompletions[habit.id] || 0;
+      return completionsAchieved >= completionsNeeded;
+    });
+  }
+
+  const habitCache = buildCompletionCache(habits.habits, settings.system.timezone);
+
+  return (
+    <div className="p-4">
+      <h1 className="text-xl font-bold mb-4">Debug Page</h1>
+      <div className="bg-gray-100 p-4 rounded break-all">
+      </div>
+    </div>
+  );
+}

app/debug/layout.tsx

@@ -0,0 +1,10 @@
+import { ReactNode } from "react";
+
+export default function Debug({children}: {children: ReactNode}) {
+  if (process.env.NODE_ENV !== 'development') return <></>
+  return (
+    <div className="debug">
+      {children}
+    </div>
+  )
+}

app/debug/user/page.tsx

@@ -0,0 +1,16 @@
+import { saltAndHashPassword } from "@/lib/server-helpers";
+
+export default function DebugPage() {
+  const password = 'admin';
+  const hashedPassword = saltAndHashPassword(password);
+
+  return (
+    <div className="p-4">
+      <h1 className="text-xl font-bold mb-4">Debug Page</h1>
+      <div className="bg-gray-100 p-4 rounded break-all">
+        <p><strong>Password:</strong> {password}</p>
+        <p><strong>Hashed Password:</strong> {hashedPassword}</p>
+      </div>
+    </div>
+  );
+}

app/habits/page.tsx

@@ -1,14 +1,9 @@
-import Layout from '@/components/Layout'
 import HabitList from '@/components/HabitList'
-import { ViewToggle } from '@/components/ViewToggle'
 
 export default function HabitsPage() {
   return (
-    <div className="flex flex-col gap-4">
+    <div className="flex flex-col">
-      <div className="flex justify-end">
+      <HabitList isTasksView={false} />
-        {/* <ViewToggle /> */}
-      </div>
-      <HabitList />
     </div>
   )
 }

app/layout.tsx

@@ -1,29 +1,23 @@
-import './globals.css'
-import { Inter } from 'next/font/google'
-import { DM_Sans } from 'next/font/google'
-import { JotaiProvider } from '@/components/jotai-providers'
-import { Suspense } from 'react'
 import { JotaiHydrate } from '@/components/jotai-hydrate'
-import { loadSettings, loadHabitsData, loadCoinsData, loadWishlistData } from './actions/data'
+import { JotaiProvider } from '@/components/jotai-providers'
 import Layout from '@/components/Layout'
-import { Toaster } from '@/components/ui/toaster'
+import LoadingSpinner from '@/components/LoadingSpinner'
 import { ThemeProvider } from "@/components/theme-provider"
-
+import { Toaster } from '@/components/ui/toaster'
-
+import { SessionProvider } from 'next-auth/react'
-// Inter (clean, modern, excellent readability)
+import { NextIntlClientProvider } from 'next-intl'
-// const inter = Inter({
+import { getLocale, getMessages } from 'next-intl/server'
-//   subsets: ['latin'],
+import { DM_Sans } from 'next/font/google'
-//   weight: ['400', '500', '600', '700']
+import { Suspense } from 'react'
-// })
+import { loadCoinsData, loadHabitsData, loadServerSettings, loadSettings, loadUsersData, loadWishlistData } from './actions/data'
+import './globals.css'
 
 // Clean and contemporary
-const dmSans = DM_Sans({
+const activeFont = DM_Sans({
   subsets: ['latin'],
   weight: ['400', '500', '600', '700']
 })
 
-const activeFont = dmSans
-
 export const metadata = {
   title: 'HabitTrove',
   description: 'Track your habits and get rewarded',
@@ -36,16 +30,23 @@ export default async function RootLayout({
 }: {
   children: React.ReactNode
 }) {
-  const [initialSettings, initialHabits, initialCoins, initialWishlist] = await Promise.all([
+  const locale = await getLocale();
+  // Providing all messages to the client
+  // side is the easiest way to get started
+  const messages = await getMessages();
+
+  const [initialSettings, initialHabits, initialCoins, initialWishlist, initialUsers, initialServerSettings] = await Promise.all([
     loadSettings(),
     loadHabitsData(),
     loadCoinsData(),
-    loadWishlistData()
+    loadWishlistData(),
+    loadUsersData(),
+    loadServerSettings(),
   ])
 
   return (
     // set suppressHydrationWarning to true to prevent hydration errors when using ThemeProvider (https://ui.shadcn.com/docs/dark-mode/next)
-    <html lang="en" suppressHydrationWarning>
+    <html lang={locale} suppressHydrationWarning>
       <body className={activeFont.className}>
         <script
           dangerouslySetInnerHTML={{
@@ -65,25 +66,31 @@ export default async function RootLayout({
           }}
         />
         <JotaiProvider>
-          <Suspense fallback="loading">
+          <Suspense fallback={<LoadingSpinner />}>
             <JotaiHydrate
               initialValues={{
                 settings: initialSettings,
                 habits: initialHabits,
                 coins: initialCoins,
-                wishlist: initialWishlist
+                wishlist: initialWishlist,
+                users: initialUsers,
+                serverSettings: initialServerSettings,
               }}
             >
+              <NextIntlClientProvider locale={locale} messages={messages}>
                 <ThemeProvider
                   attribute="class"
                   defaultTheme="system"
                   enableSystem
                   disableTransitionOnChange
                 >
+                  <SessionProvider>
                     <Layout>
                       {children}
                     </Layout>
+                  </SessionProvider>
                 </ThemeProvider>
+              </NextIntlClientProvider>
             </JotaiHydrate>
           </Suspense>
         </JotaiProvider>

app/settings/page.tsx

@@ -1,42 +1,62 @@
 'use client'
 
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { DynamicTimeNoSSR } from '@/components/DynamicTimeNoSSR';
-import { Switch } from '@/components/ui/switch'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { Label } from '@/components/ui/label'
+import { Label } from '@/components/ui/label';
-import { DynamicTimeNoSSR } from '@/components/DynamicTimeNoSSR'
+import { Switch } from '@/components/ui/switch';
-import { useAtom } from 'jotai'
+import {
-import { settingsAtom } from '@/lib/atoms'
+  Tooltip,
-import { Settings, WeekDay } from '@/lib/types'
+  TooltipContent,
-import { saveSettings, uploadAvatar } from '../actions/data'
+  TooltipProvider,
-import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
+  TooltipTrigger,
-import { Button } from '@/components/ui/button'
+} from "@/components/ui/tooltip";
-import { User } from 'lucide-react'
+import { toast } from '@/hooks/use-toast';
+import { serverSettingsAtom, settingsAtom } from '@/lib/atoms';
+import { Settings, WeekDay } from '@/lib/types';
+import { useAtom } from 'jotai';
+
+import { Info } from 'lucide-react'; // Import Info icon
+
+import { useTranslations } from 'next-intl';
+import { saveSettings } from '../actions/data';
+
+import { useSession } from 'next-auth/react'; // signOut removed
+import { useRouter } from 'next/navigation';
+// AlertDialog components and useState removed
+// Trash2 icon removed
 
 export default function SettingsPage() {
-  const [settings, setSettings] = useAtom(settingsAtom)
+  const t = useTranslations('SettingsPage');
+  // tWarning removed
+  const [settings, setSettings] = useAtom(settingsAtom);
+  const [serverSettings] = useAtom(serverSettingsAtom);
+  const { data: session } = useSession();
+  const router = useRouter();
+  // showConfirmDialog and isDeleting states removed
 
   const updateSettings = async (newSettings: Settings) => {
     await saveSettings(newSettings)
     setSettings(newSettings)
   }
 
+  // handleDeleteAccount function removed
 
-  if (!settings) return null
+  if (!settings) return <></>
 
   return (
     <>
-      <div className="container mx-auto px-4 py-8">
+      <div>
-        <h1 className="text-3xl font-bold mb-6">Settings</h1>
+        <h1 className="text-3xl font-bold mb-6">{t('title')}</h1>
         <Card className="mb-6">
           <CardHeader>
-            <CardTitle>UI Settings</CardTitle>
+            <CardTitle>{t('uiSettingsTitle')}</CardTitle>
           </CardHeader>
           <CardContent className="space-y-6">
             <div className="flex items-center justify-between">
               <div className="space-y-0.5">
-                <Label htmlFor="number-formatting">Number Formatting</Label>
+                <Label htmlFor="number-formatting">{t('numberFormattingLabel')}</Label>
                 <div className="text-sm text-muted-foreground">
-                  Format large numbers (e.g., 1K, 1M, 1B)
+                  {t('numberFormattingDescription')}
                 </div>
               </div>
               <Switch
@@ -53,9 +73,9 @@ export default function SettingsPage() {
 
             <div className="flex items-center justify-between">
               <div className="space-y-0.5">
-                <Label htmlFor="number-grouping">Number Grouping</Label>
+                <Label htmlFor="number-grouping">{t('numberGroupingLabel')}</Label>
                 <div className="text-sm text-muted-foreground">
-                  Use thousand separators (e.g., 1,000 vs 1000)
+                  {t('numberGroupingDescription')}
                 </div>
               </div>
               <Switch
@@ -74,14 +94,14 @@ export default function SettingsPage() {
 
         <Card className="mb-6">
           <CardHeader>
-            <CardTitle>System Settings</CardTitle>
+            <CardTitle>{t('systemSettingsTitle')}</CardTitle>
           </CardHeader>
           <CardContent className="space-y-6">
             <div className="flex items-center justify-between">
               <div className="space-y-0.5">
-                <Label htmlFor="timezone">Timezone</Label>
+                <Label htmlFor="timezone">{t('timezoneLabel')}</Label>
                 <div className="text-sm text-muted-foreground">
-                  Select your timezone for accurate date tracking
+                  {t('timezoneDescription')}
                 </div>
               </div>
               <div className="flex flex-col items-end gap-2">
@@ -94,7 +114,7 @@ export default function SettingsPage() {
                       system: { ...settings.system, timezone: e.target.value }
                     })
                   }
-                  className="w-[200px] rounded-md border border-input bg-background px-3 py-2 mb-4"
+                  className="w-[110px] xs:w-[200px] rounded-md border border-input bg-background px-3 py-2 mb-4"
                 >
                   {Intl.supportedValuesOf('timeZone').map((tz) => (
                     <option key={tz} value={tz}>
@@ -107,9 +127,9 @@ export default function SettingsPage() {
             </div>
             <div className="flex items-center justify-between">
               <div className="space-y-0.5">
-                <Label htmlFor="timezone">Week Start Day</Label>
+                <Label htmlFor="weekStartDay">{t('weekStartDayLabel')}</Label>
                 <div className="text-sm text-muted-foreground">
-                  Select your preferred first day of the week
+                  {t('weekStartDayDescription')}
                 </div>
               </div>
               <div className="flex flex-col items-end gap-2">
@@ -122,7 +142,7 @@ export default function SettingsPage() {
                       system: { ...settings.system, weekStartDay: Number(e.target.value) as WeekDay }
                     })
                   }
-                  className="w-[200px] rounded-md border border-input bg-background px-3 py-2"
+                  className="w-[110px] xs:w-[200px] rounded-md border border-input bg-background px-3 py-2"
                 >
                   {([
                     ['sunday', 0],
@@ -132,70 +152,98 @@ export default function SettingsPage() {
                     ['thursday', 4],
                     ['friday', 5],
                     ['saturday', 6]
-                  ] as Array<[string, WeekDay]>).map(([dayName, dayNumber]) => (
+                  ] as Array<["sunday" | "monday" | "tuesday" | "wednesday" | "thursday" | "friday" | "saturday", WeekDay]>).map(([dayName, dayNumber]) => (
                     <option key={dayNumber} value={dayNumber}>
-                      {dayName.charAt(0).toUpperCase() + dayName.slice(1)}
+                      {t(`weekdays.${dayName}`)}
                     </option>
                   ))}
                 </select>
               </div>
             </div>
-          </CardContent>
+
-        </Card>
+            {/* Add this section for Auto Backup */}
-        <Card className="mb-6">
-          <CardHeader>
-            <CardTitle>Profile Settings</CardTitle>
-          </CardHeader>
-          <CardContent className="space-y-6">
             <div className="flex items-center justify-between">
               <div className="space-y-0.5">
-                <Label htmlFor="avatar">Avatar</Label>
+                <div className="flex items-center gap-1.5">
+                  <Label htmlFor="auto-backup">{t('autoBackupLabel')}</Label>
+                  <TooltipProvider>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <Info className="h-4 w-4 text-muted-foreground cursor-help" />
+                      </TooltipTrigger>
+                      <TooltipContent side="top" align="start">
+                        <p className="max-w-xs text-sm">
+                          {t('autoBackupTooltip')}
+                        </p>
+                      </TooltipContent>
+                    </Tooltip>
+                  </TooltipProvider>
+                </div>
                 <div className="text-sm text-muted-foreground">
-                  Customize your profile picture
+                  {t('autoBackupDescription')}
                 </div>
               </div>
-              <div className="flex items-center gap-4">
+              <Switch
-                <Avatar className="h-16 w-16">
+                id="auto-backup"
-                  <AvatarImage src={settings.profile?.avatarPath ? `/api/avatars/${settings.profile.avatarPath.split('/').pop()}` : '/avatars/default.png'} />
+                checked={settings.system.autoBackupEnabled}
-                  <AvatarFallback>
+                onCheckedChange={(checked) =>
-                    <User className="h-8 w-8" />
+                  updateSettings({
-                  </AvatarFallback>
+                    ...settings,
-                </Avatar>
+                    system: { ...settings.system, autoBackupEnabled: checked }
-                <form action={async (formData: FormData) => {
+                  })
-                  const newSettings = await uploadAvatar(formData)
-                  setSettings(newSettings)
-                }}>
-                  <input
-                    type="file"
-                    id="avatar"
-                    name="avatar"
-                    accept="image/png, image/jpeg"
-                    className="hidden"
-                    onChange={(e) => {
-                      const file = e.target.files?.[0]
-                      if (file) {
-                        if (file.size > 5 * 1024 * 1024) { // 5MB
-                          alert('File size must be less than 5MB')
-                          e.target.value = ''
-                          return
                 }
-                        const form = e.target.form
-                        if (form) form.requestSubmit()
-                      }
-                    }}
               />
-                  <Button
+            </div>
-                    type="button"
+            {/* End of Auto Backup section */}
-                    variant="outline"
+
-                    onClick={() => document.getElementById('avatar')?.click()}
+            <div className="flex items-center justify-between">
+              <div className="space-y-0.5">
+                <div className="flex items-center gap-1.5">
+                  <Label htmlFor="language-select">{t('languageLabel')}</Label>
+                </div>
+                <div className="text-sm text-muted-foreground">
+                  {t('languageDescription')}
+                </div>
+                {serverSettings.isDemo && (
+                  <div className="text-sm text-red-500">
+                    {t('languageDisabledInDemoTooltip')}
+                  </div>
+                )}
+              </div>
+              <select
+                id="language-select"
+                value={settings.system.language}
+                disabled={serverSettings.isDemo}
+                onChange={(e) => {
+                  updateSettings({
+                    ...settings,
+                    system: { ...settings.system, language: e.target.value }
+                  });
+                  toast({
+                    title: t('languageChangedTitle'),
+                    description: t('languageChangedDescription'),
+                    variant: 'default',
+                  });
+                }}
+                className={`w-[110px] xs:w-[200px] rounded-md border border-input bg-background px-3 py-2 ${serverSettings.isDemo ? 'cursor-not-allowed opacity-50' : ''}`}
               >
-                    Change
+                {/* Add more languages as needed */}
-                  </Button>
+                <option value="en">English</option>
-                </form>
+                <option value="es">Español</option>
-              </div>
+                <option value="ca">Català</option>
+                <option value="de">Deutsch</option>
+                <option value="fr">Français</option>
+                <option value="ru">Русский</option>
+                <option value="zh">简体中文</option>
+                <option value="ko">한국어</option>
+                <option value="ja">日本語</option>
+              </select>
             </div>
+
           </CardContent>
         </Card>
+
+        {/* Danger Zone Card Removed */}
       </div >
     </>
   )

app/tasks/page.tsx

@@ -0,0 +1,10 @@
+import HabitList from '@/components/HabitList'
+
+export default function TasksPage() {
+  return (
+    <div className="flex flex-col">
+      <HabitList isTasksView={true} />
+    </div>
+  )
+}
+

app/wishlist/page.tsx

@@ -1,4 +1,3 @@
-import Layout from '@/components/Layout'
 import WishlistManager from '@/components/WishlistManager'
 
 export default function WishlistPage() {

auth.ts

@@ -0,0 +1,44 @@
+import NextAuth from "next-auth"
+import Credentials from "next-auth/providers/credentials"
+import { getUser } from "./app/actions/data"
+import { signInSchema } from "./lib/zod"
+import { SafeUser, SessionUser } from "./lib/types"
+ 
+export const { handlers, signIn, signOut, auth } = NextAuth({
+  trustHost: true,
+  providers: [
+    Credentials({
+      credentials: {
+        username: {},
+        password: {},
+      },
+      authorize: async (credentials) => {
+        const { username, password } = await signInSchema.parseAsync(credentials)
+        
+        // Pass the plaintext password to getUser for verification
+        const user = await getUser(username, password)
+ 
+        if (!user) {
+          throw new Error("Invalid credentials.")
+        }
+ 
+        const safeUser: SessionUser = { id: user.id }
+        return safeUser
+      },
+    }),
+  ],
+  callbacks: {
+    jwt: async ({ token, user }) => {
+      if (user) {
+        token.id = (user as SessionUser).id
+      }
+      return token
+    },
+    session: async ({ session, token }) => {
+      if (session?.user) {
+        session.user.id = token.id as string
+      }
+      return session
+    }
+  }
+})

components/AboutModal.tsx

@@ -5,24 +5,25 @@ import { Button } from "./ui/button"
 import { Star, History } from "lucide-react"
 import packageJson from '../package.json'
 import { DialogTitle } from "@radix-ui/react-dialog"
+import { useTranslations } from "next-intl"
 import { Logo } from "./Logo"
 import ChangelogModal from "./ChangelogModal"
 import { useState } from "react"
 
 interface AboutModalProps {
-  isOpen: boolean
   onClose: () => void
 }
 
-export default function AboutModal({ isOpen, onClose }: AboutModalProps) {
+export default function AboutModal({ onClose }: AboutModalProps) {
+  const t = useTranslations('AboutModal')
   const version = packageJson.version
   const [changelogOpen, setChangelogOpen] = useState(false)
 
   return (
-    <Dialog open={isOpen} onOpenChange={onClose}>
+    <Dialog open={true} onOpenChange={onClose}>
       <DialogContent className="max-w-sm">
         <DialogHeader>
-          <DialogTitle aria-label="about"></DialogTitle>
+          <DialogTitle aria-label={t('dialogArisLabel')}></DialogTitle>
         </DialogHeader>
         <div className="space-y-6 text-center py-4">
           <div>
@@ -40,14 +41,14 @@ export default function AboutModal({ isOpen, onClose }: AboutModalProps) {
                 onClick={() => setChangelogOpen(true)}
               >
                 <History className="w-3 h-3 mr-1" />
-                Changelog
+                {t('changelogButton')}
               </Button>
             </div>
           </div>
 
           <div className="space-y-4">
             <div className="text-sm">
-              Created with ❤️ by{' '}
+              {t('createdByPrefix')}{' '}
               <a
                 href="https://github.com/dohsimpson"
                 target="_blank"
@@ -56,17 +57,19 @@ export default function AboutModal({ isOpen, onClose }: AboutModalProps) {
               >
                 @dohsimpson
               </a>
+              <br/>
+              Fork by <a href="https://github.com/ManInDark" target="_blank" rel="noopener noreferrer" className="font-medium hover:underline">@ManInDark</a>
             </div>
 
             <div className="flex justify-center">
               <a
-                href="https://github.com/dohsimpson/habittrove"
+                href="https://github.com/ManInDark/HabitTrove"
                 target="_blank"
                 rel="noopener noreferrer"
               >
                 <Button variant="outline" size="sm">
                   <Star className="w-4 h-4 mr-2" />
-                  Star on GitHub
+                  {t('starOnGitHubButton')}
                 </Button>
               </a>
             </div>

components/AddEditHabitModal.tsx

@@ -1,42 +1,81 @@
 'use client'
 
-import { useState, useEffect } from 'react'
+import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
-import { RRule, RRuleSet, rrulestr } from 'rrule'
-import { useAtom } from 'jotai'
-import { settingsAtom, browserSettingsAtom } from '@/lib/atoms'
-import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter } from '@/components/ui/dialog'
 import { Button } from '@/components/ui/button'
+import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from '@/components/ui/dialog'
 import { Input } from '@/components/ui/input'
 import { Label } from '@/components/ui/label'
-import { Textarea } from '@/components/ui/textarea'
-import { Info, SmilePlus } from 'lucide-react'
 import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover'
-import data from '@emoji-mart/data'
+import { Textarea } from '@/components/ui/textarea'
-import Picker from '@emoji-mart/react'
+import { currentUserAtom, settingsAtom, usersAtom } from '@/lib/atoms'
+import { INITIAL_DUE, INITIAL_RECURRENCE_RULE, MAX_COIN_LIMIT, QUICK_DATES } from '@/lib/constants'
 import { Habit } from '@/lib/types'
-import { d2s, d2t, getISODate, getNow, parseNaturalLanguageDate, parseNaturalLanguageRRule, parseRRule, serializeRRule } from '@/lib/utils'
+import { convertHumanReadableFrequencyToMachineReadable, convertMachineReadableFrequencyToHumanReadable, d2t, serializeRRule } from '@/lib/utils'
-import { INITIAL_DUE, INITIAL_RECURRENCE_RULE } from '@/lib/constants'
+import { useAtom } from 'jotai'
-import * as chrono from 'chrono-node';
+import { Brush, Zap } from 'lucide-react'
 import { DateTime } from 'luxon'
+import { useTranslations } from 'next-intl'
+import { useState } from 'react'
+import { RRule } from 'rrule'
+import DrawingDisplay from './DrawingDisplay'
+import DrawingModal from './DrawingModal'
+import EmojiPickerButton from './EmojiPickerButton'
+import ModalOverlay from './ModalOverlay'; // Import the new component
+
 
 interface AddEditHabitModalProps {
   onClose: () => void
   onSave: (habit: Omit<Habit, 'id'>) => Promise<void>
   habit?: Habit | null
+  isTask: boolean
 }
 
-export default function AddEditHabitModal({ onClose, onSave, habit }: AddEditHabitModalProps) {
+export default function AddEditHabitModal({ onClose, onSave, habit, isTask }: AddEditHabitModalProps) {
+  const t = useTranslations('AddEditHabitModal');
   const [settings] = useAtom(settingsAtom)
-  const [browserSettings] = useAtom(browserSettingsAtom)
-  const isTasksView = browserSettings.viewType === 'tasks'
   const [name, setName] = useState(habit?.name || '')
   const [description, setDescription] = useState(habit?.description || '')
   const [coinReward, setCoinReward] = useState(habit?.coinReward || 1)
   const [targetCompletions, setTargetCompletions] = useState(habit?.targetCompletions || 1)
-  const isRecurRule = !isTasksView
+  const isRecurRule = !isTask
-  const origRuleText = isRecurRule ? parseRRule(habit?.frequency || INITIAL_RECURRENCE_RULE).toText() : habit?.frequency || INITIAL_DUE
+  // Initialize ruleText with the actual frequency string or default, not the display text
-  const [ruleText, setRuleText] = useState<string>(origRuleText)
+  const initialRuleText = habit?.frequency ? convertMachineReadableFrequencyToHumanReadable({
-  const now = getNow({ timezone: settings.system.timezone })
+    frequency: habit.frequency,
+    isRecurRule,
+    timezone: settings.system.timezone
+  }) : (isRecurRule ? INITIAL_RECURRENCE_RULE : INITIAL_DUE);
+  const [ruleText, setRuleText] = useState<string>(initialRuleText)
+  const [currentUser] = useAtom(currentUserAtom)
+  const [isQuickDatesOpen, setIsQuickDatesOpen] = useState(false)
+  const [selectedUserIds, setSelectedUserIds] = useState<string[]>((habit?.userIds || []).filter(id => id !== currentUser?.id))
+  const [usersData] = useAtom(usersAtom)
+  const users = usersData.users
+  const [drawing, setDrawing] = useState<string>(habit?.drawing || '')
+  const [isDrawingModalOpen, setIsDrawingModalOpen] = useState(false)
+
+  function getFrequencyUpdate() {
+    if (ruleText === initialRuleText && habit?.frequency) {
+      // If text hasn't changed and original frequency exists, return it
+      return habit.frequency;
+    }
+
+    const parsedResult = convertHumanReadableFrequencyToMachineReadable({
+      text: ruleText,
+      timezone: settings.system.timezone,
+      isRecurring: isRecurRule
+    });
+
+    if (parsedResult.result) {
+      return isRecurRule
+        ? serializeRRule(parsedResult.result as RRule)
+        : d2t({
+          dateTime: parsedResult.result as DateTime,
+          timezone: settings.system.timezone
+        });
+    } else {
+      return 'invalid';
+    }
+  }
 
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault()
@@ -46,22 +85,35 @@ export default function AddEditHabitModal({ onClose, onSave, habit }: AddEditHab
       coinReward,
       targetCompletions: targetCompletions > 1 ? targetCompletions : undefined,
       completions: habit?.completions || [],
-      frequency: isRecurRule ? serializeRRule(parseNaturalLanguageRRule(ruleText)) : d2t({ dateTime: parseNaturalLanguageDate({ text: ruleText, timezone: settings.system.timezone }) }),
+      frequency: getFrequencyUpdate(),
-      isTask: isTasksView ? true : undefined
+      userIds: selectedUserIds.length > 0 ? selectedUserIds.concat(currentUser?.id || []) : (currentUser && [currentUser.id]),
+      drawing: drawing && drawing !== '[]' ? drawing : undefined
     })
   }
 
+  const { result, message: errorMessage } = convertHumanReadableFrequencyToMachineReadable({ text: ruleText, timezone: settings.system.timezone, isRecurring: isRecurRule });
+
   return (
-    <Dialog open={true} onOpenChange={onClose}>
+    <>
-      <DialogContent>
+      <ModalOverlay />
+      <Dialog open={true} onOpenChange={(open) => {
+        if (!open && !isDrawingModalOpen) {
+          onClose()
+        }
+      }} modal={false}>
+        <DialogContent> {/* DialogContent from shadcn/ui is typically z-50, ModalOverlay is z-40 */}
           <DialogHeader>
-          <DialogTitle>{habit ? `Edit ${isTasksView ? 'Task' : 'Habit'}` : `Add New ${isTasksView ? 'Task' : 'Habit'}`}</DialogTitle>
+            <DialogTitle>
+              {habit
+                ? t(isTask ? 'editTaskTitle' : 'editHabitTitle')
+                : t(isTask ? 'addNewTaskTitle' : 'addNewHabitTitle')}
+            </DialogTitle>
           </DialogHeader>
           <form onSubmit={handleSubmit}>
             <div className="grid gap-4 py-4">
               <div className="grid grid-cols-4 items-center gap-4">
                 <Label htmlFor="name" className="text-right">
-                Name *
+                  {t('nameLabel')}
                 </Label>
                 <div className='flex col-span-3 gap-2'>
                   <Input
@@ -70,38 +122,20 @@ export default function AddEditHabitModal({ onClose, onSave, habit }: AddEditHab
                     onChange={(e) => setName(e.target.value)}
                     required
                   />
-                <Popover>
+                  <EmojiPickerButton
-                  <PopoverTrigger asChild>
+                    inputIdToFocus="name"
-                    <Button
+                    onEmojiSelect={(emoji) => {
-                      type="button"
-                      variant="ghost"
-                      size="icon"
-                      className="h-8 w-8"
-                    >
-                      <SmilePlus className="h-8 w-8" />
-                    </Button>
-                  </PopoverTrigger>
-                  <PopoverContent className="w-[300px] p-0">
-                    <Picker
-                      data={data}
-                      onEmojiSelect={(emoji: { native: string }) => {
                       setName(prev => {
-                          // Add space before emoji if there isn't one already
                         const space = prev.length > 0 && !prev.endsWith(' ') ? ' ' : '';
-                          return `${prev}${space}${emoji.native}`;
+                        return `${prev}${space}${emoji}`;
                       })
-                        // Focus back on input after selection
-                        const input = document.getElementById('name') as HTMLInputElement
-                        input?.focus()
                     }}
                   />
-                  </PopoverContent>
-                </Popover>
                 </div>
               </div>
               <div className="grid grid-cols-4 items-center gap-4">
                 <Label htmlFor="description" className="text-right">
-                Description
+                  {t('descriptionLabel')}
                 </Label>
                 <Textarea
                   id="description"
@@ -112,33 +146,63 @@ export default function AddEditHabitModal({ onClose, onSave, habit }: AddEditHab
               </div>
               <div className="grid grid-cols-4 items-center gap-4">
                 <Label htmlFor="recurrence" className="text-right">
-                When *
+                  {t('whenLabel')}
                 </Label>
+                {/* date input (task) */}
                 <div className="col-span-3 space-y-2">
+                  <div className="flex gap-2">
                     <Input
                       id="recurrence"
                       value={ruleText}
                       onChange={(e) => setRuleText(e.target.value)}
                       required
-                // placeholder="e.g. 'every weekday' or 'every 2 weeks on Monday, Wednesday'"
                     />
+                    {isTask && (
+                      <Popover open={isQuickDatesOpen} onOpenChange={setIsQuickDatesOpen}>
+                        <PopoverTrigger asChild>
+                          <Button
+                            type="button"
+                            variant="ghost"
+                            size="icon"
+                            className="h-8 w-8"
+                          >
+                            <Zap className="h-4 w-4" />
+                          </Button>
+                        </PopoverTrigger>
+                        <PopoverContent className="p-3 w-[280px] max-h-[40vh] overflow-y-auto" align="start">
+                          <div className="space-y-1">
+                            <div className="grid grid-cols-2 gap-2">
+                              {QUICK_DATES.map((date) => (
+                                <Button
+                                  key={date.value}
+                                  variant="outline"
+                                  className="justify-start h-9 px-3 hover:bg-primary hover:text-primary-foreground transition-colors"
+                                  onClick={() => {
+                                    setRuleText(date.value);
+                                    setIsQuickDatesOpen(false);
+                                  }}
+                                >
+                                  {date.label}
+                                </Button>
+                              ))}
                             </div>
-              <div className="col-start-2 col-span-3 text-sm text-muted-foreground">
+                          </div>
-                <span>
+                        </PopoverContent>
-                  {(() => {
+                      </Popover>
-                    try {
+                    )}
-                      return isRecurRule ? parseNaturalLanguageRRule(ruleText).toText() : d2s({ dateTime: parseNaturalLanguageDate({ text: ruleText, timezone: settings.system.timezone }), timezone: settings.system.timezone, format: DateTime.DATE_MED_WITH_WEEKDAY })
+                  </div>
-                    } catch (e: unknown) {
+                </div>
-                      return `Invalid rule: ${e instanceof Error ? e.message : 'Invalid recurrence rule'}`
+                {/* rrule input (habit) */}
-                    }
+                <div className="col-start-2 col-span-3 text-sm">
-                  })()}
+                  <span className={errorMessage ? 'text-destructive' : 'text-muted-foreground'}>
+                    {errorMessage ? errorMessage : convertMachineReadableFrequencyToHumanReadable({ frequency: result, isRecurRule, timezone: settings.system.timezone })}
                   </span>
                 </div>
               </div>
               <div className="grid grid-cols-4 items-center gap-4">
                 <div className="flex items-center gap-2 justify-end">
                   <Label htmlFor="targetCompletions">
-                  Complete
+                    {t('completeLabel')}
                   </Label>
                 </div>
                 <div className="col-span-3">
@@ -172,7 +236,7 @@ export default function AddEditHabitModal({ onClose, onSave, habit }: AddEditHab
                       </button>
                     </div>
                     <span className="text-sm text-muted-foreground">
-                    times
+                      {t('timesSuffix')}
                     </span>
                   </div>
                 </div>
@@ -180,7 +244,7 @@ export default function AddEditHabitModal({ onClose, onSave, habit }: AddEditHab
               <div className="grid grid-cols-4 items-center gap-4">
                 <div className="flex items-center gap-2 justify-end">
                   <Label htmlFor="coinReward">
-                  Reward
+                    {t('rewardLabel')}
                   </Label>
                 </div>
                 <div className="col-span-3">
@@ -197,32 +261,111 @@ export default function AddEditHabitModal({ onClose, onSave, habit }: AddEditHab
                         id="coinReward"
                         type="number"
                         value={coinReward}
-                      onChange={(e) => setCoinReward(parseInt(e.target.value === "" ? "0" : e.target.value))}
+                        onChange={(e) => {
+                          const value = parseInt(e.target.value === "" ? "0" : e.target.value)
+                          setCoinReward(Math.min(value, MAX_COIN_LIMIT))
+                        }}
                         min={0}
+                        max={MAX_COIN_LIMIT}
                         required
                         className="w-20 text-center border-0 [appearance:textfield] [&::-webkit-outer-spin-button]:appearance-none [&::-webkit-inner-spin-button]:appearance-none"
                       />
                       <button
                         type="button"
-                      onClick={() => setCoinReward(prev => prev + 1)}
+                        onClick={() => setCoinReward(prev => Math.min(prev + 1, MAX_COIN_LIMIT))}
                         className="px-3 py-2 bg-gray-100 hover:bg-gray-200 dark:bg-gray-800 dark:hover:bg-gray-700 transition-colors"
                       >
                         +
                       </button>
                     </div>
                     <span className="text-sm text-muted-foreground">
-                    coins
+                      {t('coinsSuffix')}
                     </span>
                   </div>
                 </div>
               </div>
+              <div className="grid grid-cols-4 items-center gap-4">
+                <Label className="text-right">
+                  {t('drawingLabel')}
+                </Label>
+                <div className="col-span-3">
+                  <div className="flex gap-4 items-center">
+                    <Button
+                      type="button"
+                      variant="outline"
+                      onClick={(e) => {
+                        e.preventDefault()
+                        e.stopPropagation()
+                        setIsDrawingModalOpen(true)
+                      }}
+                      className="flex-1 justify-start"
+                    >
+                      <Brush className="h-4 w-4 mr-2" />
+                      {drawing ? t('editDrawing') : t('addDrawing')}
+                    </Button>
+                    {drawing && (
+                      <div className="flex-shrink-0">
+                        <DrawingDisplay
+                          drawingData={drawing}
+                          width={80}
+                          height={53}
+                          className=""
+                        />
+                      </div>
+                    )}
+                  </div>
+                </div>
+              </div>
+              {users && users.length > 1 && (
+                <div className="grid grid-cols-4 items-center gap-4">
+                  <div className="flex items-center justify-end gap-2">
+                    <Label htmlFor="sharing-toggle">{t('shareLabel')}</Label>
+                  </div>
+                  <div className="col-span-3">
+                    <div className="flex flex-wrap gap-2">
+                      {users.filter((u) => u.id !== currentUser?.id).map(user => (
+                        <Avatar
+                          key={user.id}
+                          className={`h-8 w-8 border-2 cursor-pointer
+                          ${selectedUserIds.includes(user.id)
+                              ? 'border-primary'
+                              : 'border-muted'
+                            }`}
+                          title={user.username}
+                          onClick={() => {
+                            setSelectedUserIds(prev =>
+                              prev.includes(user.id)
+                                ? prev.filter(id => id !== user.id)
+                                : [...prev, user.id]
+                            )
+                          }}
+                        >
+                          <AvatarImage src={user?.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}` || ""} />
+                          <AvatarFallback>{user.username[0]}</AvatarFallback>
+                        </Avatar>
+                      ))}
+                    </div>
+                  </div>
+                </div>
+              )}
             </div>
             <DialogFooter>
-            <Button type="submit">{habit ? 'Save Changes' : `Add ${isTasksView ? 'Task' : 'Habit'}`}</Button>
+              <Button type="submit" disabled={!!errorMessage}>
+                {habit
+                  ? t('saveChangesButton')
+                  : t(isTask ? 'addTaskButton' : 'addHabitButton')}
+              </Button>
             </DialogFooter>
           </form>
         </DialogContent>
       </Dialog>
+      <DrawingModal
+        isOpen={isDrawingModalOpen}
+        onClose={() => setIsDrawingModalOpen(false)}
+        onSave={(drawingData) => setDrawing(drawingData)}
+        initialDrawing={drawing}
+        title={name}
+      />
+    </>
   )
 }
-

components/AddEditWishlistItemModal.tsx

@@ -1,18 +1,22 @@
-import { useState, useEffect } from 'react'
-import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter } from '@/components/ui/dialog'
 import { Button } from '@/components/ui/button'
+import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from '@/components/ui/dialog'
 import { Input } from '@/components/ui/input'
 import { Label } from '@/components/ui/label'
 import { Textarea } from '@/components/ui/textarea'
-import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover'
+import { currentUserAtom, usersAtom } from '@/lib/atoms'
-import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/components/ui/tooltip'
+import { MAX_COIN_LIMIT } from '@/lib/constants'
-import { SmilePlus, Info } from 'lucide-react'
-import data from '@emoji-mart/data'
-import Picker from '@emoji-mart/react'
 import { WishlistItemType } from '@/lib/types'
+import { useAtom } from 'jotai'
+import { Brush } from 'lucide-react'
+import { useTranslations } from 'next-intl'
+import { useEffect, useState } from 'react'
+import DrawingDisplay from './DrawingDisplay'
+import DrawingModal from './DrawingModal'
+import EmojiPickerButton from './EmojiPickerButton'
+import ModalOverlay from './ModalOverlay'
+import { Avatar, AvatarFallback, AvatarImage } from './ui/avatar'
 
 interface AddEditWishlistItemModalProps {
-  isOpen: boolean
   setIsOpen: (isOpen: boolean) => void
   editingItem: WishlistItemType | null
   setEditingItem: (item: WishlistItemType | null) => void
@@ -21,19 +25,24 @@ interface AddEditWishlistItemModalProps {
 }
 
 export default function AddEditWishlistItemModal({
-  isOpen,
   setIsOpen,
   editingItem,
   setEditingItem,
   addWishlistItem,
   editWishlistItem
 }: AddEditWishlistItemModalProps) {
+  const t = useTranslations('AddEditWishlistItemModal')
   const [name, setName] = useState(editingItem?.name || '')
   const [description, setDescription] = useState(editingItem?.description || '')
   const [coinCost, setCoinCost] = useState(editingItem?.coinCost || 1)
   const [targetCompletions, setTargetCompletions] = useState<number | undefined>(editingItem?.targetCompletions)
   const [link, setLink] = useState(editingItem?.link || '')
+  const [currentUser] = useAtom(currentUserAtom)
+  const [selectedUserIds, setSelectedUserIds] = useState<string[]>((editingItem?.userIds || []).filter(id => id !== currentUser?.id))
   const [errors, setErrors] = useState<{ [key: string]: string }>({})
+  const [usersData] = useAtom(usersAtom)
+  const [drawing, setDrawing] = useState<string>(editingItem?.drawing || '')
+  const [isDrawingModalOpen, setIsDrawingModalOpen] = useState(false)
 
   useEffect(() => {
     if (editingItem) {
@@ -42,12 +51,14 @@ export default function AddEditWishlistItemModal({
       setCoinCost(editingItem.coinCost)
       setTargetCompletions(editingItem.targetCompletions)
       setLink(editingItem.link || '')
+      setDrawing(editingItem.drawing || '')
     } else {
       setName('')
       setDescription('')
       setCoinCost(1)
       setTargetCompletions(undefined)
       setLink('')
+      setDrawing('')
     }
     setErrors({})
   }, [editingItem])
@@ -55,16 +66,18 @@ export default function AddEditWishlistItemModal({
   const validate = () => {
     const newErrors: { [key: string]: string } = {}
     if (!name.trim()) {
-      newErrors.name = 'Name is required'
+      newErrors.name = t('errorNameRequired')
     }
     if (coinCost < 1) {
-      newErrors.coinCost = 'Coin cost must be at least 1'
+      newErrors.coinCost = t('errorCoinCostMin')
+    } else if (coinCost > MAX_COIN_LIMIT) {
+      newErrors.coinCost = t('errorCoinCostMax', { max: MAX_COIN_LIMIT })
     }
     if (targetCompletions !== undefined && targetCompletions < 1) {
-      newErrors.targetCompletions = 'Target completions must be at least 1'
+      newErrors.targetCompletions = t('errorTargetCompletionsMin')
     }
     if (link && !isValidUrl(link)) {
-      newErrors.link = 'Please enter a valid URL'
+      newErrors.link = t('errorInvalidUrl')
     }
     setErrors(newErrors)
     return Object.keys(newErrors).length === 0
@@ -93,7 +106,9 @@ export default function AddEditWishlistItemModal({
       description,
       coinCost,
       targetCompletions: targetCompletions || undefined,
-      link: link.trim() || undefined
+      link: link.trim() || undefined,
+      userIds: selectedUserIds.length > 0 ? selectedUserIds.concat(currentUser?.id || []) : (currentUser && [currentUser.id]),
+      drawing: drawing && drawing !== '[]' ? drawing : undefined
     }
 
     if (editingItem) {
@@ -107,16 +122,22 @@ export default function AddEditWishlistItemModal({
   }
 
   return (
-    <Dialog open={isOpen} onOpenChange={handleClose}>
+    <>
-      <DialogContent>
+      <ModalOverlay />
+      <Dialog open={true} onOpenChange={(open) => {
+        if (!open && !isDrawingModalOpen) {
+          handleClose()
+        }
+      }} modal={false}>
+        <DialogContent> {/* DialogContent from shadcn/ui is typically z-50, ModalOverlay is z-40 */}
           <DialogHeader>
-          <DialogTitle>{editingItem ? 'Edit Reward' : 'Add New Reward'}</DialogTitle>
+            <DialogTitle>{editingItem ? t('editTitle') : t('addTitle')}</DialogTitle>
           </DialogHeader>
           <form onSubmit={handleSave}>
             <div className="grid gap-4 py-4">
               <div className="grid grid-cols-4 items-center gap-4">
                 <Label htmlFor="name" className="text-right">
-                Name *
+                  {t('nameLabel')}
                 </Label>
                 <div className="col-span-3 flex gap-2">
                   <Input
@@ -126,34 +147,20 @@ export default function AddEditWishlistItemModal({
                     className="flex-1"
                     required
                   />
-                <Popover>
+                  <EmojiPickerButton
-                  <PopoverTrigger asChild>
+                    inputIdToFocus="name"
-                    <Button
+                    onEmojiSelect={(emoji) => {
-                      type="button"
+                      setName(prev => {
-                      variant="ghost"
+                        const space = prev.length > 0 && !prev.endsWith(' ') ? ' ' : '';
-                      size="icon"
+                        return `${prev}${space}${emoji}`;
-                      className="h-8 w-8"
+                      })
-                    >
-                      <SmilePlus className="h-4 w-4" />
-                    </Button>
-                  </PopoverTrigger>
-                  <PopoverContent className="w-[300px] p-0">
-                    <Picker
-                      data={data}
-                      onEmojiSelect={(emoji: { native: string }) => {
-                        setName(prev => `${prev}${emoji.native}`)
-                        // Focus back on input after selection
-                        const input = document.getElementById('name') as HTMLInputElement
-                        input?.focus()
                     }}
                   />
-                  </PopoverContent>
-                </Popover>
                 </div>
               </div>
               <div className="grid grid-cols-4 items-center gap-4">
                 <Label htmlFor="description" className="text-right">
-                Description
+                  {t('descriptionLabel')}
                 </Label>
                 <Textarea
                   id="description"
@@ -165,7 +172,7 @@ export default function AddEditWishlistItemModal({
               <div className="grid grid-cols-4 items-center gap-4">
                 <div className="flex items-center gap-2 justify-end">
                   <Label htmlFor="coinReward">
-                  Cost
+                    {t('costLabel')}
                   </Label>
                 </div>
                 <div className="col-span-3">
@@ -182,21 +189,25 @@ export default function AddEditWishlistItemModal({
                         id="coinReward"
                         type="number"
                         value={coinCost}
-                      onChange={(e) => setCoinCost(parseInt(e.target.value === "" ? "0" : e.target.value))}
+                        onChange={(e) => {
+                          const value = parseInt(e.target.value === "" ? "0" : e.target.value)
+                          setCoinCost(Math.min(value, MAX_COIN_LIMIT))
+                        }}
                         min={0}
+                        max={MAX_COIN_LIMIT}
                         required
                         className="w-20 text-center border-0 [appearance:textfield] [&::-webkit-outer-spin-button]:appearance-none [&::-webkit-inner-spin-button]:appearance-none"
                       />
                       <button
                         type="button"
-                      onClick={() => setCoinCost(prev => prev + 1)}
+                        onClick={() => setCoinCost(prev => Math.min(prev + 1, MAX_COIN_LIMIT))}
                         className="px-3 py-2 bg-gray-100 hover:bg-gray-200 dark:bg-gray-800 dark:hover:bg-gray-700 transition-colors"
                       >
                         +
                       </button>
                     </div>
                     <span className="text-sm text-muted-foreground">
-                    coins
+                      {t('coinsSuffix')}
                     </span>
                   </div>
                 </div>
@@ -204,7 +215,7 @@ export default function AddEditWishlistItemModal({
               <div className="grid grid-cols-4 items-center gap-4">
                 <div className="flex items-center gap-2 justify-end">
                   <Label htmlFor="targetCompletions">
-                  Redeemable
+                    {t('redeemableLabel')}
                   </Label>
                 </div>
                 <div className="col-span-3">
@@ -238,7 +249,7 @@ export default function AddEditWishlistItemModal({
                       </button>
                     </div>
                     <span className="text-sm text-muted-foreground">
-                    times
+                      {t('timesSuffix')}
                     </span>
                   </div>
                   {errors.targetCompletions && (
@@ -250,7 +261,7 @@ export default function AddEditWishlistItemModal({
               </div>
               <div className="grid grid-cols-4 items-center gap-4">
                 <Label htmlFor="link" className="text-right">
-                Link
+                  {t('linkLabel')}
                 </Label>
                 <div className="col-span-3">
                   <Input
@@ -268,13 +279,85 @@ export default function AddEditWishlistItemModal({
                   )}
                 </div>
               </div>
+              <div className="grid grid-cols-4 items-center gap-4">
+                <Label className="text-right">
+                  {t('drawingLabel')}
+                </Label>
+                <div className="col-span-3">
+                  <div className="flex gap-4 items-center">
+                    <Button
+                      type="button"
+                      variant="outline"
+                      onClick={(e) => {
+                        e.preventDefault()
+                        e.stopPropagation()
+                        setIsDrawingModalOpen(true)
+                      }}
+                      className="flex-1 justify-start"
+                    >
+                      <Brush className="h-4 w-4 mr-2" />
+                      {drawing ? t('editDrawing') : t('addDrawing')}
+                    </Button>
+                    {drawing && (
+                      <div className="flex-shrink-0">
+                        <DrawingDisplay
+                          drawingData={drawing}
+                          width={80}
+                          height={53}
+                          className=""
+                        />
+                      </div>
+                    )}
+                  </div>
+                </div>
+              </div>
+              {usersData.users && usersData.users.length > 1 && (
+                <div className="grid grid-cols-4 items-center gap-4">
+                  <div className="flex items-center justify-end gap-2">
+                    <Label htmlFor="sharing-toggle">{t('shareLabel')}</Label>
+                  </div>
+                  <div className="col-span-3">
+                    <div className="flex flex-wrap gap-2">
+                      {usersData.users.filter((u) => u.id !== currentUser?.id).map(user => (
+                        <Avatar
+                          key={user.id}
+                          className={`h-8 w-8 border-2 cursor-pointer
+                          ${selectedUserIds.includes(user.id)
+                              ? 'border-primary'
+                              : 'border-muted'
+                            }`}
+                          title={user.username}
+                          onClick={() => {
+                            setSelectedUserIds(prev =>
+                              prev.includes(user.id)
+                                ? prev.filter(id => id !== user.id)
+                                : [...prev, user.id]
+                            )
+                          }}
+                        >
+                          <AvatarImage src={user?.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}` || ""} />
+                          <AvatarFallback>{user.username[0]}</AvatarFallback>
+                        </Avatar>
+                      ))}
+                    </div>
+                  </div>
+                </div>
+              )}
             </div>
             <DialogFooter>
-            <Button type="submit">{editingItem ? 'Save Changes' : 'Add Reward'}</Button>
+              <Button type="submit">{editingItem ? t('saveButton') : t('addButton')}</Button>
             </DialogFooter>
           </form>
         </DialogContent>
       </Dialog>
+      <DrawingModal
+        isOpen={isDrawingModalOpen}
+        onClose={() => setIsDrawingModalOpen(false)}
+        onSave={(drawingData) => setDrawing(drawingData)}
+        initialDrawing={drawing}
+        title={name}
+      />
+    </>
   )
 }
 

components/ClientWrapper.tsx

@@ -1,19 +1,97 @@
 'use client'
 
-import { ReactNode } from 'react'
+import { checkDataFreshness as checkServerDataFreshness } from '@/app/actions/data';
-import { useAtom } from 'jotai'
+import { aboutOpenAtom, clientFreshnessTokenAtom, currentUserIdAtom, pomodoroAtom, userSelectAtom } from '@/lib/atoms';
-import { pomodoroAtom } from '@/lib/atoms'
+import { useAtom, useAtomValue, useSetAtom } from 'jotai';
-import PomodoroTimer from './PomodoroTimer'
+import { useSession } from 'next-auth/react';
+import { ReactNode, Suspense, useCallback, useEffect, useState } from 'react';
+import AboutModal from './AboutModal';
+import LoadingSpinner from './LoadingSpinner';
+import PomodoroTimer from './PomodoroTimer';
+import RefreshBanner from './RefreshBanner';
+import UserSelectModal from './UserSelectModal';
 
-export default function ClientWrapper({ children }: { children: ReactNode }) {
+function ClientWrapperContent({ children }: { children: ReactNode }) {
   const [pomo] = useAtom(pomodoroAtom)
+  const [userSelect, setUserSelect] = useAtom(userSelectAtom)
+  const [aboutOpen, setAboutOpen] = useAtom(aboutOpenAtom)
+  const setCurrentUserIdAtom = useSetAtom(currentUserIdAtom)
+  const { data: session, status } = useSession()
+  const currentUserId = session?.user.id
+  const [showRefreshBanner, setShowRefreshBanner] = useState(false);
+
+  // clientFreshnessTokenAtom is async, useAtomValue will suspend until it's resolved.
+  // Suspense boundary is in app/layout.tsx or could be added here if needed more locally.
+  const clientToken = useAtomValue(clientFreshnessTokenAtom);
+
+
+  useEffect(() => {
+    if (status === 'loading') return
+    if (!currentUserId && !userSelect) {
+      setUserSelect(true)
+    }
+  }, [currentUserId, status, userSelect, setUserSelect])
+
+  useEffect(() => {
+    setCurrentUserIdAtom(currentUserId)
+  }, [currentUserId, setCurrentUserIdAtom])
+
+  const performFreshnessCheck = useCallback(async () => {
+    if (!clientToken || status !== 'authenticated') return;
+
+    try {
+      const result = await checkServerDataFreshness(clientToken);
+      if (!result.isFresh) {
+        setShowRefreshBanner(true);
+      }
+    } catch (error) {
+      console.error("Failed to check data freshness with server:", error);
+    }
+  }, [clientToken, status]);
+
+  useEffect(() => {
+    // Interval for polling data freshness
+    if (clientToken && !showRefreshBanner && status === 'authenticated') {
+      const intervalId = setInterval(() => {
+        performFreshnessCheck();
+      }, 30000); // Check every 30 seconds
+
+      return () => clearInterval(intervalId);
+    }
+  }, [clientToken, performFreshnessCheck, showRefreshBanner, status]);
+
+  const handleRefresh = () => {
+    setShowRefreshBanner(false);
+    window.location.reload();
+  };
 
   return (
     <>
       {children}
-      {pomo.show && (
+      {pomo.show && <PomodoroTimer />}
-        <PomodoroTimer />
+      {userSelect && <UserSelectModal onClose={() => setUserSelect(false)} />}
-      )}
+      {aboutOpen && <AboutModal onClose={() => setAboutOpen(false)} />}
+      {showRefreshBanner && <RefreshBanner onRefresh={handleRefresh} />}
     </>
-  )
+  );
+}
+
+export default function ClientWrapper({ children }: { children: ReactNode }) {
+  const [isMounted, setIsMounted] = useState(false);
+
+  // block client-side hydration until mounted (this is crucial to wait for all jotai atoms to load),
+  // to prevent SSR hydration errors in the children components
+  useEffect(() => {
+    setIsMounted(true);
+  }, []);
+
+  if (!isMounted) {
+    return <LoadingSpinner />;
+  }
+
+  return (
+    <Suspense fallback={<LoadingSpinner />}>
+      <ClientWrapperContent>{children}</ClientWrapperContent>
+    </Suspense>
+  );
 }

components/CoinBalance.tsx

@@ -2,17 +2,19 @@ import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
 import { Coins } from 'lucide-react'
 import { FormattedNumber } from '@/components/FormattedNumber'
 import { useAtom } from 'jotai'
+import { useTranslations } from 'next-intl'
 import { settingsAtom } from '@/lib/atoms'
 import dynamic from 'next/dynamic'
 
 const TodayEarnedCoins = dynamic(() => import('./TodayEarnedCoins'), { ssr: false })
 
 export default function CoinBalance({ coinBalance }: { coinBalance: number }) {
+  const t = useTranslations('CoinBalance');
   const [settings] = useAtom(settingsAtom)
   return (
     <Card>
       <CardHeader>
-        <CardTitle>Coin Balance</CardTitle>
+        <CardTitle>{t('coinBalanceTitle')}</CardTitle>
       </CardHeader>
       <CardContent>
         <div className="flex items-center justify-center">

components/CoinsManager.tsx

@@ -1,20 +1,29 @@
 'use client'
 
-import { useState } from 'react'
-import { t2d, d2s, getNow, isSameDate } from '@/lib/utils'
-import { Button } from '@/components/ui/button'
 import { FormattedNumber } from '@/components/FormattedNumber'
-import { History, Pencil } from 'lucide-react'
+import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
-import EmptyState from './EmptyState'
+import { Button } from '@/components/ui/button'
-import { Input } from '@/components/ui/input'
+
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { settingsAtom } from '@/lib/atoms'
+import { Input } from '@/components/ui/input'
-import Link from 'next/link'
-import { useAtom } from 'jotai'
 import { useCoins } from '@/hooks/useCoins'
+import { currentUserAtom, settingsAtom, usersAtom } from '@/lib/atoms'
+import { MAX_COIN_LIMIT } from '@/lib/constants'
+import { TransactionType } from '@/lib/types'
+import { d2s, t2d } from '@/lib/utils'
+import { useAtom } from 'jotai'
+import { History } from 'lucide-react'
+import { useTranslations } from 'next-intl'
+import Link from 'next/link'
+import { useSearchParams } from 'next/navigation'; // Import useSearchParams
+import { useEffect, useRef, useState } from 'react'; // Import useEffect, useRef
+import EmptyState from './EmptyState'
 import { TransactionNoteEditor } from './TransactionNoteEditor'
 
 export default function CoinsManager() {
+  const t = useTranslations('CoinsManager')
+  const [currentUser] = useAtom(currentUserAtom)
+  const [selectedUser, setSelectedUser] = useState<string>()
   const {
     add,
     remove,
@@ -26,14 +35,40 @@ export default function CoinsManager() {
     totalSpent,
     coinsSpentToday,
     transactionsToday
-  } = useCoins()
+  } = useCoins({ selectedUser })
   const [settings] = useAtom(settingsAtom)
+  const [usersData] = useAtom(usersAtom)
   const DEFAULT_AMOUNT = '0'
   const [amount, setAmount] = useState(DEFAULT_AMOUNT)
   const [pageSize, setPageSize] = useState(50)
   const [currentPage, setCurrentPage] = useState(1)
-
   const [note, setNote] = useState('')
+  const searchParams = useSearchParams()
+  const highlightId = searchParams.get('highlight')
+  const userIdFromQuery = searchParams.get('user') // Get user ID from query
+  const transactionRefs = useRef<Record<string, HTMLDivElement | null>>({});
+  const PAGE_ENTRY_COUNTS = [10, 50, 100, 500];
+
+  // Effect to set selected user from query param if admin
+  useEffect(() => {
+    if (currentUser?.isAdmin && userIdFromQuery && userIdFromQuery !== selectedUser) {
+      // Check if the user ID from query exists in usersData
+      if (usersData.users.some(u => u.id === userIdFromQuery)) {
+        setSelectedUser(userIdFromQuery);
+      }
+    }
+    // Only run when userIdFromQuery or currentUser changes, avoid re-running on selectedUser change within this effect
+  }, [userIdFromQuery, currentUser, usersData.users, selectedUser]);
+
+  // Effect to scroll to highlighted transaction
+  useEffect(() => {
+    if (highlightId && transactionRefs.current[highlightId]) {
+      transactionRefs.current[highlightId]?.scrollIntoView({
+        behavior: 'smooth',
+        block: 'center',
+      });
+    }
+  }, [highlightId, transactions]); // Re-run if highlightId or transactions change
 
   const handleSaveNote = async (transactionId: string, note: string) => {
     await updateNote(transactionId, note)
@@ -56,9 +91,35 @@ export default function CoinsManager() {
     }
   }
 
+  const getTransactionTypeLabel = (type: TransactionType) => {
+    switch (type) {
+      case 'HABIT_COMPLETION': return t('transactionTypeHabitCompletion');
+      case 'TASK_COMPLETION': return t('transactionTypeTaskCompletion');
+      case 'HABIT_UNDO': return t('transactionTypeHabitUndo');
+      case 'TASK_UNDO': return t('transactionTypeTaskUndo');
+      case 'WISH_REDEMPTION': return t('transactionTypeWishRedemption');
+      case 'MANUAL_ADJUSTMENT': return t('transactionTypeManualAdjustment');
+    }
+  }
+
   return (
-    <div className="container mx-auto px-4 py-8">
+    <div>
-      <h1 className="text-3xl font-bold mb-6">Coins Management</h1>
+      <div className="flex items-center justify-between mb-6">
+        <h1 className="text-xl xs:text-3xl font-bold mr-6">{t('title')}</h1>
+        {currentUser?.isAdmin && (
+          <select
+            className="border rounded p-2"
+            value={selectedUser}
+            onChange={(e) => setSelectedUser(e.target.value)}
+          >
+            {usersData.users.map(user => (
+              <option key={user.id} value={user.id}>
+                {user.username}
+              </option>
+            ))}
+          </select>
+        )}
+      </div>
 
       <div className="grid gap-6 md:grid-cols-2">
         <Card>
@@ -66,8 +127,8 @@ export default function CoinsManager() {
             <CardTitle className="flex items-center gap-2">
               <span className="text-2xl animate-bounce hover:animate-none cursor-default">💰</span>
               <div>
-                <div className="text-sm font-normal text-muted-foreground">Current Balance</div>
+                <div className="text-sm font-normal text-muted-foreground">{t('currentBalanceLabel')}</div>
-                <div className="text-3xl font-bold"><FormattedNumber amount={balance} settings={settings} /> coins</div>
+                <div className="text-3xl font-bold"><FormattedNumber amount={balance} settings={settings} /> {t('coinsSuffix')}</div>
               </div>
             </CardTitle>
           </CardHeader>
@@ -79,7 +140,11 @@ export default function CoinsManager() {
                     variant="outline"
                     size="icon"
                     className="h-10 w-10 text-lg"
-                    onClick={() => setAmount(prev => (Number(prev) - 1).toString())}
+                    onClick={() => setAmount(prev => {
+                      const current = Number(prev);
+                      const next = current - 1;
+                      return (Math.abs(next) > MAX_COIN_LIMIT ? (next < 0 ? -MAX_COIN_LIMIT : MAX_COIN_LIMIT) : next).toString();
+                    })}
                   >
                     -
                   </Button>
@@ -87,7 +152,22 @@ export default function CoinsManager() {
                     <Input
                       type="number"
                       value={amount}
-                      onChange={(e) => setAmount(e.target.value)}
+                      onChange={(e) => {
+                        const rawValue = e.target.value;
+                        if (rawValue === '' || rawValue === '-') {
+                          setAmount(rawValue);
+                          return;
+                        }
+                        let numericValue = Number(rawValue); // Changed const to let
+                        if (isNaN(numericValue)) return; // Or handle error
+
+                        if (Math.abs(numericValue) > MAX_COIN_LIMIT) {
+                          numericValue = numericValue < 0 ? -MAX_COIN_LIMIT : MAX_COIN_LIMIT;
+                        }
+                        setAmount(numericValue.toString());
+                      }}
+                      min={-MAX_COIN_LIMIT}
+                      max={MAX_COIN_LIMIT}
                       className="text-center text-xl font-medium h-12"
                     />
                     <div className="absolute right-3 top-1/2 -translate-y-1/2 text-muted-foreground">
@@ -98,7 +178,11 @@ export default function CoinsManager() {
                     variant="outline"
                     size="icon"
                     className="h-10 w-10 text-lg"
-                    onClick={() => setAmount(prev => (Number(prev) + 1).toString())}
+                    onClick={() => setAmount(prev => {
+                      const current = Number(prev);
+                      const next = current + 1;
+                      return (Math.abs(next) > MAX_COIN_LIMIT ? (next < 0 ? -MAX_COIN_LIMIT : MAX_COIN_LIMIT) : next).toString();
+                    })}
                   >
                     +
                   </Button>
@@ -112,7 +196,7 @@ export default function CoinsManager() {
                       variant="default"
                     >
                       <div className="flex items-center gap-2">
-                        {Number(amount) >= 0 ? 'Add Coins' : 'Remove Coins'}
+                        {Number(amount) >= 0 ? t('addCoinsButton') : t('removeCoinsButton')}
                       </div>
                     </Button>
                   </div>
@@ -124,27 +208,27 @@ export default function CoinsManager() {
 
         <Card>
           <CardHeader>
-            <CardTitle>Statistics</CardTitle>
+            <CardTitle>{t('statisticsTitle')}</CardTitle>
           </CardHeader>
           <CardContent>
             <div className="grid grid-cols-1 xl:grid-cols-3 gap-4">
               {/* Top Row - Totals */}
               <div className="p-4 rounded-lg bg-green-100 dark:bg-green-900">
-                <div className="text-sm text-green-800 dark:text-green-100 mb-1">Total Earned</div>
+                <div className="text-sm text-green-800 dark:text-green-100 mb-1">{t('totalEarnedLabel')}</div>
                 <div className="text-2xl font-bold text-green-900 dark:text-green-50">
                   <FormattedNumber amount={totalEarned} settings={settings} /> 🪙
                 </div>
               </div>
 
               <div className="p-4 rounded-lg bg-red-100 dark:bg-red-900">
-                <div className="text-sm text-red-800 dark:text-red-100 mb-1">Total Spent</div>
+                <div className="text-sm text-red-800 dark:text-red-100 mb-1">{t('totalSpentLabel')}</div>
                 <div className="text-2xl font-bold text-red-900 dark:text-red-50">
                   <FormattedNumber amount={totalSpent} settings={settings} /> 💸
                 </div>
               </div>
 
               <div className="p-4 rounded-lg bg-pink-100 dark:bg-pink-900">
-                <div className="text-sm text-pink-800 dark:text-pink-100 mb-1">Total Transactions</div>
+                <div className="text-sm text-pink-800 dark:text-pink-100 mb-1">{t('totalTransactionsLabel')}</div>
                 <div className="text-2xl font-bold text-pink-900 dark:text-pink-50">
                   {transactions.length} 📈
                 </div>
@@ -152,21 +236,21 @@ export default function CoinsManager() {
 
               {/* Bottom Row - Today */}
               <div className="p-4 rounded-lg bg-blue-100 dark:bg-blue-900">
-                <div className="text-sm text-blue-800 dark:text-blue-100 mb-1">Today's Earned</div>
+                <div className="text-sm text-blue-800 dark:text-blue-100 mb-1">{t('todaysEarnedLabel')}</div>
                 <div className="text-2xl font-bold text-blue-900 dark:text-blue-50">
                   <FormattedNumber amount={coinsEarnedToday} settings={settings} /> 🪙
                 </div>
               </div>
 
               <div className="p-4 rounded-lg bg-purple-100 dark:bg-purple-900">
-                <div className="text-sm text-purple-800 dark:text-purple-100 mb-1">Today's Spent</div>
+                <div className="text-sm text-purple-800 dark:text-purple-100 mb-1">{t('todaysSpentLabel')}</div>
                 <div className="text-2xl font-bold text-purple-900 dark:text-purple-50">
                   <FormattedNumber amount={coinsSpentToday} settings={settings} /> 💸
                 </div>
               </div>
 
               <div className="p-4 rounded-lg bg-orange-100 dark:bg-orange-900">
-                <div className="text-sm text-orange-800 dark:text-orange-100 mb-1">Today's Transactions</div>
+                <div className="text-sm text-orange-800 dark:text-orange-100 mb-1">{t('todaysTransactionsLabel')}</div>
                 <div className="text-2xl font-bold text-orange-900 dark:text-orange-50">
                   {transactionsToday} 📊
                 </div>
@@ -177,13 +261,13 @@ export default function CoinsManager() {
 
         <Card className="md:col-span-2">
           <CardHeader>
-            <CardTitle>Transaction History</CardTitle>
+            <CardTitle>{t('transactionHistoryTitle')}</CardTitle>
           </CardHeader>
           <CardContent>
             <div className="space-y-4">
               <div className="flex justify-between items-center mb-4">
                 <div className="flex items-center gap-2">
-                  <span className="text-sm text-muted-foreground">Show:</span>
+                  <span className="text-sm text-muted-foreground">{t('showLabel')}</span>
                   <select
                     className="border rounded p-1"
                     value={pageSize}
@@ -192,22 +276,20 @@ export default function CoinsManager() {
                       setCurrentPage(1) // Reset to first page when changing page size
                     }}
                   >
-                    <option value={50}>50</option>
+                    {PAGE_ENTRY_COUNTS.map(n => <option key={n} value={n}>{n}</option>)}
-                    <option value={100}>100</option>
-                    <option value={500}>500</option>
                   </select>
-                  <span className="text-sm text-muted-foreground">entries</span>
+                  <span className="text-sm text-muted-foreground">{t('entriesSuffix')}</span>
                 </div>
                 <div className="text-sm text-muted-foreground">
-                  Showing {Math.min((currentPage - 1) * pageSize + 1, transactions.length)} to {Math.min(currentPage * pageSize, transactions.length)} of {transactions.length} entries
+                  {t('showingEntries', { from: Math.min((currentPage - 1) * pageSize + 1, transactions.length), to: Math.min(currentPage * pageSize, transactions.length), total: transactions.length })}
                 </div>
               </div>
 
               {transactions.length === 0 ? (
                 <EmptyState
                   icon={History}
-                  title="No transactions yet"
+                  title={t('noTransactionsTitle')}
-                  description="Your transaction history will appear here once you start earning or spending coins"
+                  description={t('noTransactionsDescription')}
                 />
               ) : (
                 <>
@@ -229,13 +311,17 @@ export default function CoinsManager() {
                         }
                       }
 
+                      const isHighlighted = transaction.id === highlightId;
+                      const transactionUser = usersData.users.find(u => u.id === transaction.userId);
                       return (
                         <div
                           key={transaction.id}
-                          className="flex justify-between items-center p-3 border rounded hover:bg-gray-50 dark:hover:bg-gray-800 transition-colors"
+                          ref={(el) => { transactionRefs.current[transaction.id] = el; }} // Assign ref correctly
+                          className={`flex justify-between items-center p-3 border rounded hover:bg-gray-50 dark:hover:bg-gray-800 transition-colors ${isHighlighted ? 'ring-2 ring-blue-500 bg-blue-50 dark:bg-blue-900/30' : '' // Apply highlight styles
+                            }`}
                         >
-                          <div className="space-y-1">
+                          <div className="space-y-1 flex-grow mr-4"> {/* Added flex-grow and margin */}
-                            <div className="flex items-center gap-2">
+                            <div className="flex items-center gap-2 flex-wrap"> {/* Added flex-wrap */}
                               {transaction.relatedItemId ? (
                                 <Link
                                   href={`${transaction.type === 'WISH_REDEMPTION' ? '/wishlist' : '/habits'}?highlight=${transaction.relatedItemId}`}
@@ -250,8 +336,20 @@ export default function CoinsManager() {
                               <span
                                 className={`text-xs px-2 py-1 rounded-full ${getBadgeStyles()}`}
                               >
-                                {transaction.type.split('_').join(' ')}
+                                {getTransactionTypeLabel(transaction.type as TransactionType)}
                               </span>
+                              {transaction.userId && currentUser?.isAdmin && (
+                                <Avatar className="h-6 w-6">
+                                  <AvatarImage
+                                    src={transactionUser?.avatarPath ?
+                                      `/api/avatars/${transactionUser?.avatarPath?.split('/').pop()}` : undefined}
+                                    alt={transactionUser?.username}
+                                  />
+                                  <AvatarFallback>
+                                    {transactionUser?.username?.[0] || '?'}
+                                  </AvatarFallback>
+                                </Avatar>
+                              )}
                             </div>
                             <p className="text-sm text-gray-500">
                               {d2s({ dateTime: t2d({ timestamp: transaction.timestamp, timezone: settings.system.timezone }), timezone: settings.system.timezone })}
@@ -263,6 +361,7 @@ export default function CoinsManager() {
                               onDelete={handleDeleteNote}
                             />
                           </div>
+                          <div className="flex-shrink-0 text-right"> {/* Ensure amount stays on the right */}
                             <span
                               className={`font-mono ${transaction.amount >= 0
                                 ? 'text-green-600 dark:text-green-400'
@@ -272,6 +371,7 @@ export default function CoinsManager() {
                               {transaction.amount >= 0 ? '+' : ''}{transaction.amount}
                             </span>
                           </div>
+                        </div>
                       )
                     })}
 
@@ -294,9 +394,9 @@ export default function CoinsManager() {
                         ‹
                       </Button>
                       <div className="flex items-center gap-1 px-4 py-2 rounded-md bg-muted">
-                        <span className="text-sm font-medium">Page</span>
+                        <span className="text-sm font-medium">{t('pageLabel')}</span>
                         <span className="text-sm font-bold">{currentPage}</span>
-                        <span className="text-sm font-medium">of</span>
+                        <span className="text-sm font-medium">{t('ofLabel')}</span>
                         <span className="text-sm font-bold">{Math.ceil(transactions.length / pageSize)}</span>
                       </div>
                       <Button

components/CompletionCountBadge.tsx

@@ -0,0 +1,35 @@
+import { Badge } from "@/components/ui/badge"
+import { completedHabitsMapAtom, habitsByDateFamily, settingsAtom } from '@/lib/atoms'
+import { getTodayInTimezone } from '@/lib/utils'
+import { useAtom } from 'jotai'
+import { useTranslations } from 'next-intl'
+
+interface CompletionCountBadgeProps {
+  type: 'habits' | 'tasks'
+  date?: string
+}
+
+export default function CompletionCountBadge({
+  type,
+  date
+}: CompletionCountBadgeProps) {
+  const t = useTranslations('CompletionCountBadge');
+  const [settings] = useAtom(settingsAtom)
+  const [completedHabitsMap] = useAtom(completedHabitsMapAtom)
+  const targetDate = date || getTodayInTimezone(settings.system.timezone)
+  const [dueHabits] = useAtom(habitsByDateFamily(targetDate))
+
+  const completedCount = completedHabitsMap.get(targetDate)?.filter(h => 
+    type === 'tasks' ? h.isTask : !h.isTask
+  ).length || 0
+
+  const totalCount = dueHabits.filter(h => 
+    type === 'tasks' ? h.isTask : !h.isTask
+  ).length
+
+  return (
+    <Badge variant="secondary">
+      {t('countCompleted', { completedCount, totalCount })}
+    </Badge>
+  )
+}

components/ConfirmDialog.tsx

@@ -6,6 +6,7 @@ import {
   DialogFooter,
 } from '@/components/ui/dialog'
 import { Button } from '@/components/ui/button'
+import { useTranslations } from 'next-intl'
 
 interface ConfirmDialogProps {
   isOpen: boolean
@@ -23,9 +24,13 @@ export default function ConfirmDialog({
   onConfirm,
   title,
   message,
-  confirmText = "Confirm",
+  confirmText,
-  cancelText = "Cancel"
+  cancelText,
 }: ConfirmDialogProps) {
+  const t = useTranslations('ConfirmDialog');
+  const finalConfirmText = confirmText || t('confirmButton');
+  const finalCancelText = cancelText || t('cancelButton');
+
   return (
     <Dialog open={isOpen} onOpenChange={onClose}>
       <DialogContent>
@@ -37,10 +42,10 @@ export default function ConfirmDialog({
         </div>
         <DialogFooter>
           <Button variant="outline" onClick={onClose}>
-            {cancelText}
+            {finalCancelText}
           </Button>
           <Button variant="destructive" onClick={onConfirm}>
-            {confirmText}
+            {finalConfirmText}
           </Button>
         </DialogFooter>
       </DialogContent>

components/DailyOverview.tsx

@@ -1,23 +1,34 @@
-import { Circle, Coins, ArrowRight, CircleCheck, ChevronDown, ChevronUp, Timer } from 'lucide-react'
+import { Badge } from '@/components/ui/badge'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
 import {
   ContextMenu,
   ContextMenuContent,
-  ContextMenuItem,
+  ContextMenuTrigger
-  ContextMenuTrigger,
 } from "@/components/ui/context-menu"
-import { cn, isHabitDueToday, getHabitFreq } from '@/lib/utils'
-import Link from 'next/link'
-import { useState, useEffect } from 'react'
-import { useAtom } from 'jotai'
-import { pomodoroAtom, settingsAtom, completedHabitsMapAtom, browserSettingsAtom } from '@/lib/atoms'
-import { getTodayInTimezone, isSameDate, t2d, d2t, getNow } from '@/lib/utils'
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { Badge } from '@/components/ui/badge'
 import { Progress } from '@/components/ui/progress'
-import { WishlistItemType } from '@/lib/types'
+import {
-import { Habit } from '@/lib/types'
+  Tooltip,
-import Linkify from './linkify'
+  TooltipContent,
+  TooltipProvider,
+  TooltipTrigger,
+} from "@/components/ui/tooltip"
 import { useHabits } from '@/hooks/useHabits'
+import { browserSettingsAtom, completedHabitsMapAtom, hasTasksAtom, pomodoroAtom, settingsAtom } from '@/lib/atoms'
+import { DESKTOP_DISPLAY_ITEM_COUNT } from '@/lib/constants'
+import { Habit, WishlistItemType } from '@/lib/types'
+import { cn, d2t, getNow, getTodayInTimezone, isHabitDue, isSameDate, isTaskOverdue, t2d } from '@/lib/utils'
+import { useAtom } from 'jotai'
+import { AlertTriangle, ArrowRight, ChevronDown, ChevronUp, Circle, CircleCheck, Coins, Pin, Plus } from 'lucide-react'; // Removed unused icons
+import { useTranslations } from 'next-intl'
+import Link from 'next/link'
+import { useState } from 'react'
+import AddEditHabitModal from './AddEditHabitModal'
+import CompletionCountBadge from './CompletionCountBadge'
+import ConfirmDialog from './ConfirmDialog'
+import { HabitContextMenuItems } from './HabitContextMenuItems'
+import Linkify from './linkify'
+import { Button } from './ui/button'
+import DrawingDisplay from './DrawingDisplay'
 
 interface UpcomingItemsProps {
   habits: Habit[]
@@ -25,80 +36,122 @@ interface UpcomingItemsProps {
   coinBalance: number
 }
 
-export default function DailyOverview({
+interface ItemSectionProps {
-  habits,
+  title: string;
-  wishlistItems,
+  items: Habit[];
-  coinBalance,
+  emptyMessage: string;
-}: UpcomingItemsProps) {
+  isTask: boolean;
-  const { completeHabit, undoComplete } = useHabits()
+  viewLink: string;
-  const [settings] = useAtom(settingsAtom)
+  addNewItem: () => void;
-  const [browserSettings] = useAtom(browserSettingsAtom)
-  const [dailyHabits, setDailyHabits] = useState<Habit[]>([])
-  const [completedHabitsMap] = useAtom(completedHabitsMapAtom)
-  const today = getTodayInTimezone(settings.system.timezone)
-  const todayCompletions = completedHabitsMap.get(today) || []
-  const isTasksView = browserSettings.viewType === 'tasks'
-
-  useEffect(() => {
-    // Filter habits that are due today based on their recurrence rule
-    const filteredHabits = habits.filter(habit =>
-      (isTasksView ? habit.isTask : !habit.isTask) &&
-      isHabitDueToday({ habit, timezone: settings.system.timezone })
-    )
-    setDailyHabits(filteredHabits)
-  }, [habits, isTasksView])
-
-  // Get all wishlist items sorted by redeemable status (non-redeemable first) then by coin cost
-  const sortedWishlistItems = wishlistItems
-    .sort((a, b) => {
-      const aRedeemable = a.coinCost <= coinBalance
-      const bRedeemable = b.coinCost <= coinBalance
-
-      // Non-redeemable items first
-      if (aRedeemable !== bRedeemable) {
-        return aRedeemable ? 1 : -1
 }
 
-      // Then sort by coin cost (lower cost first)
+const ItemSection = ({
-      return a.coinCost - b.coinCost
+  title,
-    })
+  items,
+  emptyMessage,
+  isTask,
+  viewLink,
+  addNewItem,
+}: ItemSectionProps) => {
+  const t = useTranslations('DailyOverview');
+  const { completeHabit, undoComplete, saveHabit, deleteHabit, archiveHabit, habitFreqMap } = useHabits();
+  const [_, setPomo] = useAtom(pomodoroAtom);
+  const [browserSettings, setBrowserSettings] = useAtom(browserSettingsAtom);
+  const [settings] = useAtom(settingsAtom);
+  const [completedHabitsMap] = useAtom(completedHabitsMapAtom);
 
-  const [expandedHabits, setExpandedHabits] = useState(false)
+  const today = getTodayInTimezone(settings.system.timezone);
-  const [expandedWishlist, setExpandedWishlist] = useState(false)
+  const currentTodayCompletions = completedHabitsMap.get(today) || [];
-  const [_, setPomo] = useAtom(pomodoroAtom)
+  const currentBadgeType = isTask ? 'tasks' : 'habits';
 
+  const currentExpanded = isTask ? browserSettings.expandedTasks : browserSettings.expandedHabits;
+  const setCurrentExpanded = (value: boolean) => {
+    setBrowserSettings(prev => ({
+      ...prev,
+      [isTask ? 'expandedTasks' : 'expandedHabits']: value
+    }));
+  };
+
+  const [isConfirmDeleteDialogOpen, setIsConfirmDeleteDialogOpen] = useState(false);
+  const [habitToDelete, setHabitToDelete] = useState<Habit | null>(null);
+  const [habitToEdit, setHabitToEdit] = useState<Habit | null>(null);
+
+  const handleDeleteClick = (habit: Habit) => {
+    setHabitToDelete(habit);
+    setIsConfirmDeleteDialogOpen(true);
+  };
+
+  const confirmDelete = async () => {
+    if (habitToDelete) {
+      await deleteHabit(habitToDelete.id);
+      setHabitToDelete(null);
+      setIsConfirmDeleteDialogOpen(false);
+    }
+  };
+
+  const handleEditClick = (habit: Habit) => {
+    setHabitToEdit(habit);
+  };
+
+  if (items.length === 0) {
     return (
-    <>
-      <Card>
-        <CardHeader>
-          <CardTitle>Today's Overview</CardTitle>
-        </CardHeader>
-        <CardContent>
-          <div className="space-y-4">
       <div>
         <div className="flex items-center justify-between mb-2">
-                <h3 className="font-semibold">{isTasksView ? 'Daily Tasks' : 'Daily Habits'}</h3>
+          <h3 className="font-semibold">{title}</h3>
-                <Badge variant="secondary">
+          <Button
-                  {`${dailyHabits.filter(habit => {
+            variant="ghost"
-                    const completions = (completedHabitsMap.get(today) || [])
+            size="sm"
-                      .filter(h => h.id === habit.id).length;
+            className="h-7 w-7 rounded-full hover:bg-primary/10 hover:text-primary"
-                    return completions >= (habit.targetCompletions || 1);
+            onClick={addNewItem}
-                  }).length}/${dailyHabits.length} Completed`}
+          >
-                </Badge>
+            <Plus className="h-4 w-4" />
+            <span className="sr-only">{t(isTask ? 'addTaskButtonLabel' : 'addHabitButtonLabel')}</span>
+          </Button>
         </div>
-              <ul className={`grid gap-2 transition-all duration-300 ease-in-out ${expandedHabits ? 'max-h-none' : 'max-h-[200px]'} overflow-hidden`}>
+        <div className="text-center text-muted-foreground text-sm py-4">
-                {dailyHabits
+          {emptyMessage}
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      <div className="flex items-center justify-between mb-2">
+        <div className="flex items-center gap-2">
+          <h3 className="font-semibold">{title}</h3>
+        </div>
+        <div className="flex items-center gap-2">
+          <CompletionCountBadge type={currentBadgeType} />
+          <Button
+            variant="ghost"
+            size="sm"
+            className="h-7 w-7 rounded-full hover:bg-primary/10 hover:text-primary"
+            onClick={addNewItem}
+          >
+            <Plus className="h-4 w-4" />
+            <span className="sr-only">{t(isTask ? 'addTaskButtonLabel' : 'addHabitButtonLabel')}</span>
+          </Button>
+        </div>
+      </div>
+      <ul className={`grid gap-2 transition-all duration-300 ease-in-out ${currentExpanded ? 'max-h-none' : 'max-h-[200px]'} overflow-hidden`}>
+        {items
           .sort((a, b) => {
-                    // First by completion status
+            // First by pinned status
-                    const aCompleted = todayCompletions.includes(a);
+            if (a.pinned !== b.pinned) {
-                    const bCompleted = todayCompletions.includes(b);
+              return a.pinned ? -1 : 1;
+            }
+
+            // Then by completion status
+            const aCompleted = currentTodayCompletions.includes(a);
+            const bCompleted = currentTodayCompletions.includes(b);
             if (aCompleted !== bCompleted) {
               return aCompleted ? 1 : -1;
             }
 
             // Then by frequency (daily first)
-                    const aFreq = getHabitFreq(a);
+            const aFreq = habitFreqMap.get(a.id) || 'daily';
-                    const bFreq = getHabitFreq(b);
+            const bFreq = habitFreqMap.get(b.id) || 'daily';
             const freqOrder = ['daily', 'weekly', 'monthly', 'yearly'];
             if (freqOrder.indexOf(aFreq) !== freqOrder.indexOf(bFreq)) {
               return freqOrder.indexOf(aFreq) - freqOrder.indexOf(bFreq);
@@ -114,26 +167,28 @@ export default function DailyOverview({
             const bTarget = b.targetCompletions || 1;
             return bTarget - aTarget;
           })
-                  .slice(0, expandedHabits ? undefined : 5)
+          .slice(0, currentExpanded ? undefined : DESKTOP_DISPLAY_ITEM_COUNT)
           .map((habit) => {
             const completionsToday = habit.completions.filter(completion =>
               isSameDate(t2d({ timestamp: completion, timezone: settings.system.timezone }), t2d({ timestamp: d2t({ dateTime: getNow({ timezone: settings.system.timezone }) }), timezone: settings.system.timezone }))
             ).length
             const target = habit.targetCompletions || 1
-                    const isCompleted = completionsToday >= target
+            const isCompleted = completionsToday >= target || (isTask && habit.archived)
             return (
               <li
                 className={`flex items-center justify-between text-sm p-2 rounded-md
                 ${isCompleted ? 'bg-secondary/50' : 'bg-secondary/20'}`}
                 key={habit.id}
               >
-                        <span className="flex items-center gap-2">
+                <span className="flex items-center gap-2 flex-1 min-w-0">
                   <ContextMenu>
                     <ContextMenuTrigger asChild>
-                              <div className="flex-none">
+                      <div className="flex items-center gap-2 cursor-pointer flex-1 min-w-0">
+                        <div className="flex-shrink-0">
                           <button
                             onClick={(e) => {
                               e.preventDefault();
+                              e.stopPropagation();
                               if (isCompleted) {
                                 undoComplete(habit);
                               } else {
@@ -162,35 +217,68 @@ export default function DailyOverview({
                             )}
                           </button>
                         </div>
-                            </ContextMenuTrigger>
+                        <span className="flex items-center gap-1">
-                            <span className={isCompleted ? 'line-through' : ''}>
+                          {habit.pinned && (
-                              <Linkify>
+                            <Pin className="h-4 w-4 text-yellow-500" />
+                          )}
+                          <Link
+                            href={`/habits?highlight=${habit.id}`}
+                            className="flex items-center gap-1 hover:text-primary transition-colors"
+                          >
+                            {isTask && isTaskOverdue(habit, settings.system.timezone) && !isCompleted && (
+                              <TooltipProvider>
+                                <Tooltip delayDuration={0}>
+                                  <TooltipTrigger asChild>
+                                    {/* The AlertTriangle itself doesn't need hover styles if the parent Link handles it */}
+                                    <AlertTriangle className="h-4 w-4 flex-shrink-0 text-red-600 dark:text-red-500" />
+                                  </TooltipTrigger>
+                                  <TooltipContent>
+                                    <p>{t('overdueTooltip')}</p>
+                                  </TooltipContent>
+                                </Tooltip>
+                              </TooltipProvider>
+                            )}
+                            <span
+                              className={cn(
+                                isCompleted ? 'line-through' : '',
+                                'break-all' // Text specific styles
+                              )}
+                            >
                               {habit.name}
-                              </Linkify>
                             </span>
+                          </Link>
+                          {habit.drawing && (
+                            <div className="ml-2 pr-2">
+                              <DrawingDisplay
+                                drawingData={habit.drawing}
+                                width={40}
+                                height={26}
+                                className="border-0"
+                              />
+                            </div>
+                          )}
+                        </span>
+                      </div>
+                    </ContextMenuTrigger>
                     <ContextMenuContent className="w-64">
-                              <ContextMenuItem onClick={() => {
+                      <HabitContextMenuItems
-                                setPomo((prev) => ({
+                        habit={habit}
-                                  ...prev,
+                        onEditRequest={() => handleEditClick(habit)}
-                                  show: true,
+                        onDeleteRequest={() => handleDeleteClick(habit)}
-                                  selectedHabitId: habit.id
+                        context="daily-overview"
-                                }))
+                      />
-                              }}>
-                                <Timer className="mr-2 h-4 w-4" />
-                                <span>Start Pomodoro</span>
-                              </ContextMenuItem>
                     </ContextMenuContent>
                   </ContextMenu>
                 </span>
-                        <span className="flex items-center gap-2 text-xs text-muted-foreground">
+                <span className="flex items-center gap-2 text-xs text-muted-foreground flex-shrink-0">
                   {habit.targetCompletions && (
                     <span className="bg-secondary px-1.5 py-0.5 rounded-full">
                       {completionsToday}/{target}
                     </span>
                   )}
-                          {getHabitFreq(habit) !== 'daily' && (
+                  {habitFreqMap.get(habit.id) !== 'daily' && (
                     <Badge variant="outline" className="text-xs">
-                              {getHabitFreq(habit)}
+                      {habitFreqMap.get(habit.id)}
                     </Badge>
                   )}
                   <span className="flex items-center">
@@ -216,48 +304,159 @@ export default function DailyOverview({
       </ul>
       <div className="flex items-center justify-between">
         <button
-                  onClick={() => setExpandedHabits(!expandedHabits)}
+          onClick={() => setCurrentExpanded(!currentExpanded)}
           className="text-sm text-muted-foreground hover:text-primary flex items-center gap-1"
         >
-                  {expandedHabits ? (
+          {items.length > DESKTOP_DISPLAY_ITEM_COUNT && (currentExpanded ? (
             <>
-                      Show less
+              {t('showLessButton')}
               <ChevronUp className="h-3 w-3" />
             </>
           ) : (
             <>
-                      Show all
+              {t('showAllButton')}
               <ChevronDown className="h-3 w-3" />
             </>
-                  )}
+          ))}
         </button>
         <Link
-                  href="/habits"
+          href={viewLink}
           className="text-sm text-muted-foreground hover:text-primary flex items-center gap-1"
         >
           View
           <ArrowRight className="h-3 w-3" />
         </Link>
       </div>
+      {habitToDelete && (
+        <ConfirmDialog
+          isOpen={isConfirmDeleteDialogOpen}
+          onClose={() => setIsConfirmDeleteDialogOpen(false)}
+          onConfirm={confirmDelete}
+          title={`Delete ${isTask ? 'Task' : 'Habit'}`}
+          message={`Are you sure you want to delete "${habitToDelete.name}"? This action cannot be undone.`}
+          confirmText="Delete"
+        />
+      )}
+      {habitToEdit && (
+        <AddEditHabitModal
+          onClose={() => setHabitToEdit(null)}
+          onSave={async (updatedHabit) => {
+            await saveHabit({ ...habitToEdit, ...updatedHabit });
+            setHabitToEdit(null);
+          }}
+          habit={habitToEdit}
+          isTask={habitToEdit.isTask || false}
+        />
+      )}
     </div>
+  );
+};
+
+export default function DailyOverview({
+  habits,
+  wishlistItems,
+  coinBalance,
+}: UpcomingItemsProps) {
+  const t = useTranslations('DailyOverview');
+  const { completeHabit, undoComplete } = useHabits()
+  const [settings] = useAtom(settingsAtom)
+  const [completedHabitsMap] = useAtom(completedHabitsMapAtom)
+  const [browserSettings, setBrowserSettings] = useAtom(browserSettingsAtom)
+  const today = getTodayInTimezone(settings.system.timezone)
+  const todayCompletions = completedHabitsMap.get(today) || []
+  const { saveHabit } = useHabits()
+
+  const timezone = settings.system.timezone
+  const todayDateObj = getNow({ timezone })
+
+  const dailyTasks = habits.filter(habit =>
+    habit.isTask &&
+    !habit.archived &&
+    (isHabitDue({ habit, timezone, date: todayDateObj }) || isTaskOverdue(habit, timezone))
+  )
+  const dailyHabits = habits.filter(habit =>
+    !habit.isTask &&
+    !habit.archived &&
+    isHabitDue({ habit, timezone, date: todayDateObj })
+  )
+
+  // Get all wishlist items sorted by redeemable status (non-redeemable first) then by coin cost
+  // Filter out archived wishlist items
+  const sortedWishlistItems = wishlistItems
+    .filter(item => !item.archived)
+    .sort((a, b) => {
+      const aRedeemable = a.coinCost <= coinBalance
+      const bRedeemable = b.coinCost <= coinBalance
+
+      // Non-redeemable items first
+      if (aRedeemable !== bRedeemable) {
+        return aRedeemable ? 1 : -1
+      }
+
+      // Then sort by coin cost (lower cost first)
+      return a.coinCost - b.coinCost
+    })
+
+  const [hasTasks] = useAtom(hasTasksAtom)
+  const [, setPomo] = useAtom(pomodoroAtom)
+  const [modalConfig, setModalConfig] = useState<{
+    isOpen: boolean,
+    isTask: boolean
+  }>({
+    isOpen: false,
+    isTask: false
+  });
+
+  return (
+    <>
+      <Card>
+        <CardHeader>
+          <CardTitle>{t('todaysOverviewTitle')}</CardTitle>
+        </CardHeader>
+        <CardContent>
+          <div className="space-y-6">
+            {/* Tasks Section */}
+            {hasTasks && (
+              <ItemSection
+                title={t('dailyTasksTitle')}
+                items={dailyTasks}
+                emptyMessage={t('noTasksDueTodayMessage')}
+                isTask={true}
+                viewLink="/habits?view=tasks"
+                addNewItem={() => setModalConfig({ isOpen: true, isTask: true })}
+              />
+            )}
+
+            {/* Habits Section */}
+            <ItemSection
+              title={t('dailyHabitsTitle')}
+              items={dailyHabits}
+              emptyMessage={t('noHabitsDueTodayMessage')}
+              isTask={false}
+              viewLink="/habits"
+              addNewItem={() => setModalConfig({ isOpen: true, isTask: false })}
+            />
 
             <div className="space-y-2">
               <div className="flex items-center justify-between mb-2">
-                <h3 className="font-semibold">Wishlist Goals</h3>
+                <h3 className="font-semibold">{t('wishlistGoalsTitle')}</h3>
                 <Badge variant="secondary">
-                  {wishlistItems.filter(item => item.coinCost <= coinBalance).length}/{wishlistItems.length} Redeemable
+                  {t('redeemableBadgeLabel', {
+                    count: wishlistItems.filter(item => item.coinCost <= coinBalance).length,
+                    total: wishlistItems.length
+                  })}
                 </Badge>
               </div>
               <div>
-                <div className={`space-y-3 transition-all duration-300 ease-in-out ${expandedWishlist ? 'max-h-none' : 'max-h-[200px]'} overflow-hidden`}>
+                <div className={`space-y-3 transition-all duration-300 ease-in-out ${browserSettings.expandedWishlist ? 'max-h-none' : 'max-h-[200px]'} overflow-hidden`}>
                   {sortedWishlistItems.length === 0 ? (
                     <div className="text-center text-muted-foreground text-sm py-4">
-                      No wishlist items yet. Add some goals to work towards!
+                      {t('noWishlistItemsMessage')}
                     </div>
                   ) : (
                     <>
                       {sortedWishlistItems
-                        .slice(0, expandedWishlist ? undefined : 5)
+                        .slice(0, browserSettings.expandedWishlist ? undefined : DESKTOP_DISPLAY_ITEM_COUNT)
                         .map((item) => {
                           const isRedeemable = item.coinCost <= coinBalance
                           return (
@@ -270,9 +469,19 @@ export default function DailyOverview({
                               )}
                             >
                               <div className="flex items-center justify-between mb-2">
+                                <div className="flex items-center gap-2">
                                   <span className="text-sm">
                                     <Linkify>{item.name}</Linkify>
                                   </span>
+                                  {item.drawing && (
+                                    <DrawingDisplay
+                                      drawingData={item.drawing}
+                                      width={40}
+                                      height={26}
+                                      className="border-0"
+                                    />
+                                  )}
+                                </div>
                                 <span className="text-xs flex items-center">
                                   <Coins className={cn(
                                     "h-3 w-3 mr-1 transition-all",
@@ -299,8 +508,8 @@ export default function DailyOverview({
                               />
                               <p className="text-xs text-muted-foreground mt-2">
                                 {isRedeemable
-                                  ? "Ready to redeem!"
+                                  ? t('readyToRedeemMessage')
-                                  : `${item.coinCost - coinBalance} coins to go`
+                                  : t('coinsToGoMessage', { amount: item.coinCost - coinBalance })
                                 }
                               </p>
                             </Link>
@@ -311,26 +520,26 @@ export default function DailyOverview({
                 </div>
                 <div className="flex items-center justify-between">
                   <button
-                    onClick={() => setExpandedWishlist(!expandedWishlist)}
+                    onClick={() => setBrowserSettings(prev => ({ ...prev, expandedWishlist: !prev.expandedWishlist }))}
                     className="text-sm text-muted-foreground hover:text-primary flex items-center gap-1"
                   >
-                    {expandedWishlist ? (
+                    {wishlistItems.length > DESKTOP_DISPLAY_ITEM_COUNT && (browserSettings.expandedWishlist ? (
                       <>
-                        Show less
+                        {t('showLessButton')}
                         <ChevronUp className="h-3 w-3" />
                       </>
                     ) : (
                       <>
-                        Show all
+                        {t('showAllButton')}
                         <ChevronDown className="h-3 w-3" />
                       </>
-                    )}
+                    ))}
                   </button>
                   <Link
                     href="/wishlist"
                     className="text-sm text-muted-foreground hover:text-primary flex items-center gap-1"
                   >
-                    View
+                    {t('viewButton')}
                     <ArrowRight className="h-3 w-3" />
                   </Link>
                 </div>
@@ -339,6 +548,17 @@ export default function DailyOverview({
           </div>
         </CardContent>
       </Card>
+      {modalConfig.isOpen && (
+        <AddEditHabitModal
+          onClose={() => setModalConfig({ isOpen: false, isTask: false })}
+          onSave={async (habit) => {
+            await saveHabit({ ...habit, isTask: modalConfig.isTask })
+            setModalConfig({ isOpen: false, isTask: false });
+          }}
+          habit={null}
+          isTask={modalConfig.isTask}
+        />
+      )}
     </>
   )
 }

components/Dashboard.tsx

@@ -1,35 +1,33 @@
 'use client'
 
+import { useCoins } from '@/hooks/useCoins'
+import { habitsAtom, wishlistAtom } from '@/lib/atoms'
 import { useAtom } from 'jotai'
-import { wishlistAtom, habitsAtom, settingsAtom, coinsAtom } from '@/lib/atoms'
+import { useTranslations } from 'next-intl'
+import CoinBalance from './CoinBalance'
 import DailyOverview from './DailyOverview'
 import HabitStreak from './HabitStreak'
-import CoinBalance from './CoinBalance'
-import { useHabits } from '@/hooks/useHabits'
-import { ViewToggle } from './ViewToggle'
 
 export default function Dashboard() {
+  const t = useTranslations('Dashboard');
   const [habitsData] = useAtom(habitsAtom)
   const habits = habitsData.habits
-  const [settings] = useAtom(settingsAtom)
+  const { balance } = useCoins()
-  const [coins] = useAtom(coinsAtom)
-  const coinBalance = coins.balance
   const [wishlist] = useAtom(wishlistAtom)
   const wishlistItems = wishlist.items
 
   return (
-    <div className="container mx-auto px-4 py-8">
+    <div>
       <div className="flex justify-between items-center mb-6">
-        <h1 className="text-3xl font-bold">Dashboard</h1>
+        <h1 className="text-xl xs:text-3xl font-bold">{t('title')}</h1>
-        <ViewToggle />
       </div>
       <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
-        <CoinBalance coinBalance={coinBalance} />
+        <CoinBalance coinBalance={balance} />
         <HabitStreak habits={habits} />
         <DailyOverview
           wishlistItems={wishlistItems}
           habits={habits}
-          coinBalance={coinBalance}
+          coinBalance={balance}
         />
 
         {/* <HabitHeatmap habits={habits} /> */}

components/DrawingCanvas.tsx

@@ -0,0 +1,241 @@
+'use client'
+
+import React, { useState, useRef, useEffect } from 'react'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { Undo2, Trash2, Palette } from 'lucide-react'
+import { useTranslations } from 'next-intl'
+
+interface DrawingCanvasProps {
+  initialDrawing?: string
+  onSave: (drawingData: string) => void
+  onClear?: () => void
+}
+
+export default function DrawingCanvas({ initialDrawing, onSave, onClear }: DrawingCanvasProps) {
+  const t = useTranslations('DrawingModal')
+  const [drawingHistory, setDrawingHistory] = useState<Array<{
+    color: string
+    thickness: number
+    points: Array<{ x: number; y: number }>
+  }>>([])
+  const [isDrawing, setIsDrawing] = useState(false)
+  const [color, setColor] = useState('#000000')
+  const [thickness, setThickness] = useState(4)
+  
+  const canvasRef = useRef<HTMLCanvasElement>(null)
+  const contextRef = useRef<CanvasRenderingContext2D | null>(null)
+
+  useEffect(() => {
+    const canvas = canvasRef.current
+    if (!canvas) return
+
+    const context = canvas.getContext('2d')
+    if (!context) return
+
+    context.lineCap = 'round'
+    context.lineJoin = 'round'
+    contextRef.current = context
+
+    const resizeCanvas = () => {
+      const rect = canvas.getBoundingClientRect()
+      canvas.width = rect.width
+      canvas.height = rect.height
+    }
+
+    window.addEventListener('resize', resizeCanvas)
+    resizeCanvas()
+
+    return () => {
+      window.removeEventListener('resize', resizeCanvas)
+    }
+  }, [])
+
+  useEffect(() => {
+    if (initialDrawing) {
+      try {
+        const loadedData = JSON.parse(initialDrawing)
+        if (Array.isArray(loadedData)) {
+          setDrawingHistory(loadedData)
+        }
+      } catch (e) {
+        console.warn('Failed to load initial drawing data')
+      }
+    }
+  }, [initialDrawing])
+
+  useEffect(() => {
+    redrawCanvas()
+  }, [drawingHistory])
+
+  const getMousePos = (event: React.MouseEvent) => {
+    const canvas = canvasRef.current
+    if (!canvas) return { x: 0, y: 0 }
+
+    const rect = canvas.getBoundingClientRect()
+    const scaleX = canvas.width / rect.width
+    const scaleY = canvas.height / rect.height
+    return {
+      x: (event.clientX - rect.left) * scaleX,
+      y: (event.clientY - rect.top) * scaleY
+    }
+  }
+
+  const startDrawing = (event: React.MouseEvent) => {
+    event.preventDefault()
+    event.stopPropagation()
+    const { x, y } = getMousePos(event)
+    setIsDrawing(true)
+    contextRef.current?.beginPath()
+    contextRef.current?.moveTo(x, y)
+
+    setDrawingHistory(prevHistory => [
+      ...prevHistory,
+      { color, thickness, points: [{ x, y }] }
+    ])
+  }
+
+  const draw = (event: React.MouseEvent) => {
+    if (!isDrawing || !contextRef.current) return
+
+    event.preventDefault()
+    event.stopPropagation()
+    const { x, y } = getMousePos(event)
+    contextRef.current.lineTo(x, y)
+    contextRef.current.strokeStyle = color
+    contextRef.current.lineWidth = thickness
+    contextRef.current.stroke()
+
+    setDrawingHistory(prevHistory => {
+      const lastStroke = prevHistory[prevHistory.length - 1]
+      if (lastStroke) {
+        lastStroke.points.push({ x, y })
+      }
+      return [...prevHistory]
+    })
+  }
+
+  const stopDrawing = (event?: React.MouseEvent) => {
+    if (event) {
+      event.preventDefault()
+      event.stopPropagation()
+    }
+    setIsDrawing(false)
+    contextRef.current?.closePath()
+  }
+
+  const redrawCanvas = () => {
+    const canvas = canvasRef.current
+    if (!canvas || !contextRef.current) return
+
+    const context = contextRef.current
+    context.clearRect(0, 0, canvas.width, canvas.height)
+
+    drawingHistory.forEach(stroke => {
+      if (stroke.points.length === 0) return
+      context.beginPath()
+      context.strokeStyle = stroke.color
+      context.lineWidth = stroke.thickness
+      context.moveTo(stroke.points[0].x, stroke.points[0].y)
+      stroke.points.forEach(point => {
+        context.lineTo(point.x, point.y)
+      })
+      context.stroke()
+    })
+  }
+
+  const handleUndo = () => {
+    setDrawingHistory(prevHistory => {
+      const newHistory = [...prevHistory]
+      newHistory.pop()
+      return newHistory
+    })
+  }
+
+  const handleClear = () => {
+    setDrawingHistory([])
+    onClear?.()
+  }
+
+  const handleSave = () => {
+    const jsonString = drawingHistory.length > 0 ? JSON.stringify(drawingHistory) : ''
+    onSave(jsonString)
+  }
+
+  return (
+    <div className="flex flex-col space-y-4">
+      <canvas
+        ref={canvasRef}
+        onMouseDown={startDrawing}
+        onMouseMove={draw}
+        onMouseUp={(e) => stopDrawing(e)}
+        onMouseLeave={(e) => stopDrawing(e)}
+        className="border border-gray-300 rounded-lg bg-white touch-none w-full h-80 cursor-crosshair"
+      />
+      
+      <div className="flex flex-wrap items-center gap-4">
+        <div className="flex items-center gap-2">
+          <Label htmlFor="colorPicker" className="text-sm font-medium">
+            {t('colorLabel')}
+          </Label>
+          <div className="flex items-center gap-1">
+            <Palette className="h-4 w-4 text-muted-foreground" />
+            <Input
+              type="color"
+              id="colorPicker"
+              value={color}
+              onChange={(e) => setColor(e.target.value)}
+              className="w-8 h-8 border-2 border-gray-300 rounded cursor-pointer p-0"
+            />
+          </div>
+        </div>
+        
+        <div className="flex items-center gap-2">
+          <Label htmlFor="lineThickness" className="text-sm font-medium">
+            {t('thicknessLabel')}
+          </Label>
+          <Input
+            type="range"
+            id="lineThickness"
+            min="1"
+            max="20"
+            value={thickness}
+            onChange={(e) => setThickness(Number(e.target.value))}
+            className="w-20"
+          />
+          <span className="text-xs text-muted-foreground w-6">{thickness}</span>
+        </div>
+        
+        <div className="flex gap-2 ml-auto">
+          <Button
+            type="button"
+            variant="outline"
+            size="sm"
+            onClick={handleUndo}
+            disabled={drawingHistory.length === 0}
+          >
+            <Undo2 className="h-4 w-4 mr-1" />
+            {t('undoButton')}
+          </Button>
+          <Button
+            type="button"
+            variant="outline"
+            size="sm"
+            onClick={handleClear}
+            disabled={drawingHistory.length === 0}
+          >
+            <Trash2 className="h-4 w-4 mr-1" />
+            {t('clearButton')}
+          </Button>
+        </div>
+      </div>
+      
+      <div className="flex justify-end">
+        <Button onClick={handleSave}>
+          {t('saveDrawingButton')}
+        </Button>
+      </div>
+    </div>
+  )
+}

components/DrawingDisplay.tsx

@@ -0,0 +1,113 @@
+'use client'
+
+import { useEffect, useRef } from 'react'
+
+interface DrawingDisplayProps {
+  drawingData?: string
+  width?: number
+  height?: number
+  className?: string
+}
+
+interface DrawingStroke {
+  color: string
+  thickness: number
+  points: Array<{ x: number; y: number }>
+}
+
+export default function DrawingDisplay({
+  drawingData,
+  width = 120,
+  height = 80,
+  className = ''
+}: DrawingDisplayProps) {
+  const canvasRef = useRef<HTMLCanvasElement>(null)
+
+  useEffect(() => {
+    const canvas = canvasRef.current
+    if (!canvas || !drawingData) return
+
+    const context = canvas.getContext('2d')
+    if (!context) return
+
+    try {
+      const strokes: DrawingStroke[] = JSON.parse(drawingData)
+
+      // Clear canvas
+      context.clearRect(0, 0, canvas.width, canvas.height)
+
+      // Set up context for drawing
+      context.lineCap = 'round'
+      context.lineJoin = 'round'
+
+      // Calculate scaling to fit the drawing in the small canvas
+      if (strokes.length === 0) return
+
+      // Find bounds of the drawing
+      let minX = Infinity, minY = Infinity, maxX = -Infinity, maxY = -Infinity
+
+      strokes.forEach(stroke => {
+        stroke.points.forEach(point => {
+          minX = Math.min(minX, point.x)
+          minY = Math.min(minY, point.y)
+          maxX = Math.max(maxX, point.x)
+          maxY = Math.max(maxY, point.y)
+        })
+      })
+
+      // Add padding
+      const padding = 10
+      const drawingWidth = maxX - minX + padding * 2
+      const drawingHeight = maxY - minY + padding * 2
+
+      // Calculate scale to fit in canvas
+      const scaleX = canvas.width / drawingWidth
+      const scaleY = canvas.height / drawingHeight
+      const scale = Math.min(scaleX, scaleY, 1) // Don't scale up
+
+      // Center the drawing
+      const offsetX = (canvas.width - drawingWidth * scale) / 2 - (minX - padding) * scale
+      const offsetY = (canvas.height - drawingHeight * scale) / 2 - (minY - padding) * scale
+
+      // Draw each stroke
+      strokes.forEach(stroke => {
+        if (stroke.points.length === 0) return
+
+        context.beginPath()
+        context.strokeStyle = stroke.color
+        context.lineWidth = Math.max(1, stroke.thickness * scale) // Ensure minimum line width
+
+        const firstPoint = stroke.points[0]
+        context.moveTo(
+          firstPoint.x * scale + offsetX,
+          firstPoint.y * scale + offsetY
+        )
+
+        stroke.points.forEach(point => {
+          context.lineTo(
+            point.x * scale + offsetX,
+            point.y * scale + offsetY
+          )
+        })
+
+        context.stroke()
+      })
+    } catch (error) {
+      console.warn('Failed to render drawing:', error)
+    }
+  }, [drawingData, width, height])
+
+  if (!drawingData) {
+    return null
+  }
+
+  return (
+    <canvas
+      ref={canvasRef}
+      width={width}
+      height={height}
+      className={`border-2 border-muted-foreground rounded bg-white ${className}`}
+      style={{ width: `${width}px`, height: `${height}px` }}
+    />
+  )
+}

components/DrawingModal.tsx

@@ -0,0 +1,83 @@
+'use client'
+
+import { useState } from 'react'
+import { Button } from '@/components/ui/button'
+import { X } from 'lucide-react'
+import DrawingCanvas from './DrawingCanvas'
+import { useTranslations } from 'next-intl'
+
+interface DrawingModalProps {
+  isOpen: boolean
+  onClose: () => void
+  onSave: (drawingData: string) => void
+  initialDrawing?: string
+  title?: string
+}
+
+export default function DrawingModal({ 
+  isOpen, 
+  onClose, 
+  onSave, 
+  initialDrawing,
+  title = 'Drawing'
+}: DrawingModalProps) {
+  const t = useTranslations('DrawingModal')
+  const [currentDrawing, setCurrentDrawing] = useState<string>(initialDrawing || '')
+
+  const handleSave = (drawingData: string) => {
+    setCurrentDrawing(drawingData)
+    onSave(drawingData)
+    onClose()
+  }
+
+  const handleClear = () => {
+    setCurrentDrawing('')
+  }
+
+  if (!isOpen) return null
+
+  return (
+    <div className="fixed inset-0 z-[100] flex items-center justify-center">
+      {/* Backdrop */}
+      <div 
+        className="fixed inset-0 bg-black/50 backdrop-blur-sm" 
+        onClick={onClose}
+      />
+      
+      {/* Modal */}
+      <div 
+        className="relative bg-white dark:bg-gray-900 rounded-lg shadow-xl max-w-2xl w-full mx-4 max-h-[90vh] overflow-auto"
+        onClick={(e) => e.stopPropagation()}
+      >
+        {/* Header */}
+        <div className="flex items-center justify-between p-6 border-b">
+          <h2 className="text-lg font-semibold">{title}</h2>
+          <Button
+            variant="ghost"
+            size="icon"
+            onClick={onClose}
+            className="h-6 w-6"
+          >
+            <X className="h-4 w-4" />
+          </Button>
+        </div>
+        
+        {/* Content */}
+        <div className="p-6" onClick={(e) => e.stopPropagation()}>
+          <DrawingCanvas
+            initialDrawing={currentDrawing}
+            onSave={handleSave}
+            onClear={handleClear}
+          />
+        </div>
+        
+        {/* Footer */}
+        <div className="flex justify-end gap-2 p-6 border-t">
+          <Button variant="outline" onClick={onClose}>
+            {t('cancelButton')}
+          </Button>
+        </div>
+      </div>
+    </div>
+  )
+}

components/EmojiPickerButton.tsx

@@ -0,0 +1,51 @@
+'use client'
+
+import { useState } from 'react'
+import { Button } from '@/components/ui/button'
+import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/popover'
+import { SmilePlus } from 'lucide-react'
+import data from '@emoji-mart/data'
+import Picker from '@emoji-mart/react'
+
+interface EmojiPickerButtonProps {
+  onEmojiSelect: (emoji: string) => void
+  inputIdToFocus?: string // Optional: ID of the input to focus after selection
+}
+
+export default function EmojiPickerButton({ onEmojiSelect, inputIdToFocus }: EmojiPickerButtonProps) {
+  const [isEmojiPickerOpen, setIsEmojiPickerOpen] = useState(false)
+
+  return (
+    <Popover modal={false} open={isEmojiPickerOpen} onOpenChange={setIsEmojiPickerOpen}>
+      <PopoverTrigger asChild>
+        <Button
+          type="button"
+          variant="ghost"
+          size="icon"
+          className="h-8 w-8" // Consistent sizing
+        >
+          <SmilePlus className="h-4 w-4" /> {/* Consistent icon size */}
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent
+        className="w-[300px] p-0"
+        onCloseAutoFocus={(event) => {
+          if (inputIdToFocus) {
+            event.preventDefault();
+            const input = document.getElementById(inputIdToFocus) as HTMLInputElement;
+            input?.focus();
+          }
+        }}
+      >
+        <Picker
+          data={data}
+          onEmojiSelect={(emoji: { native: string }) => {
+            onEmojiSelect(emoji.native);
+            setIsEmojiPickerOpen(false);
+            // Focus is handled by onCloseAutoFocus
+          }}
+        />
+      </PopoverContent>
+    </Popover>
+  )
+}

components/HabitCalendar.tsx

@@ -1,32 +1,35 @@
 'use client'
 
-import { useState, useMemo, useCallback } from 'react'
+import CompletionCountBadge from '@/components/CompletionCountBadge'
 import { Calendar } from '@/components/ui/calendar'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { Badge } from '@/components/ui/badge'
-import { Button } from '@/components/ui/button'
-import { Check, Circle, CircleCheck } from 'lucide-react'
-import { d2s, getNow, t2d, getCompletedHabitsForDate, isHabitDue, getISODate, getCompletionsForToday, getCompletionsForDate } from '@/lib/utils'
-import { useAtom } from 'jotai'
 import { useHabits } from '@/hooks/useHabits'
-import { habitsAtom, settingsAtom, completedHabitsMapAtom } from '@/lib/atoms'
+import { completedHabitsMapAtom, habitsAtom, hasTasksAtom, settingsAtom } from '@/lib/atoms'
-import { DateTime } from 'luxon'
-import Linkify from './linkify'
 import { Habit } from '@/lib/types'
+import { d2s, getCompletionsForDate, getISODate, getNow, isHabitDue } from '@/lib/utils'
+import { useAtom } from 'jotai'
+import { Circle, CircleCheck } from 'lucide-react'
+import { DateTime } from 'luxon'
+import { useTranslations } from 'next-intl'
+import { useCallback, useMemo, useState } from 'react'
+import Linkify from './linkify'
 
 export default function HabitCalendar() {
+  const t = useTranslations('HabitCalendar')
   const { completePastHabit } = useHabits()
 
   const handleCompletePastHabit = useCallback(async (habit: Habit, date: DateTime) => {
     try {
       await completePastHabit(habit, date)
     } catch (error) {
-      console.error('Error completing past habit:', error)
+      console.error(t('errorCompletingPastHabit'), error)
     }
-  }, [completePastHabit])
+  }, [completePastHabit, t])
   const [settings] = useAtom(settingsAtom)
-  const [selectedDate, setSelectedDate] = useState<DateTime>(getNow({ timezone: settings.system.timezone }))
+  const [selectedDateTime, setSelectedDateTime] = useState<DateTime>(getNow({ timezone: settings.system.timezone }))
+  const selectedDate = selectedDateTime.toFormat("yyyy-MM-dd")
   const [habitsData] = useAtom(habitsAtom)
+  const [hasTasks] = useAtom(hasTasksAtom)
   const habits = habitsData.habits
 
   const [completedHabitsMap] = useAtom(completedHabitsMapAtom)
@@ -39,18 +42,18 @@ export default function HabitCalendar() {
   }, [completedHabitsMap, settings.system.timezone])
 
   return (
-    <div className="container mx-auto px-4 py-8">
+    <div>
-      <h1 className="text-3xl font-bold mb-6">Habit Calendar</h1>
+      <h1 className="text-xl xs:text-3xl font-bold mb-6">{t('title')}</h1>
-      <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
         <Card>
           <CardHeader>
-            <CardTitle>Calendar</CardTitle>
+            <CardTitle>{t('calendarCardTitle')}</CardTitle>
           </CardHeader>
           <CardContent>
             <Calendar
               mode="single"
-              selected={selectedDate.toJSDate()}
+              selected={selectedDateTime.toJSDate()}
-              onSelect={(e) => e && setSelectedDate(DateTime.fromJSDate(e))}
+              onSelect={(e) => e && setSelectedDateTime(DateTime.fromJSDate(e))}
               weekStartsOn={settings.system.weekStartDay}
               className="rounded-md border"
               modifiers={{
@@ -62,7 +65,7 @@ export default function HabitCalendar() {
                 )
               }}
               modifiersClassNames={{
-                completed: 'bg-green-100 text-green-800 font-bold',
+                completed: 'bg-green-100 dark:bg-green-900/30 text-green-800 dark:text-green-300 font-medium rounded-md',
               }}
             />
           </CardContent>
@@ -70,28 +73,35 @@ export default function HabitCalendar() {
         <Card>
           <CardHeader>
             <CardTitle>
-              {selectedDate ? (
+              {selectedDateTime ? (
-                <>Habits for {d2s({ dateTime: selectedDate, timezone: settings.system.timezone, format: "yyyy-MM-dd" })}</>
+                <>{d2s({ dateTime: selectedDateTime, timezone: settings.system.timezone, format: DateTime.DATE_MED_WITH_WEEKDAY })}</>
               ) : (
-                'Select a date'
+                t('selectDatePrompt')
               )}
             </CardTitle>
           </CardHeader>
           <CardContent>
-            {selectedDate && (
+            {selectedDateTime && (
-              <ul className="space-y-2">
+              <div className="space-y-8">
+                {hasTasks && (
+                  <div className="pt-2 border-t">
+                    <div className="flex items-center justify-between mb-3">
+                      <h3 className="font-medium text-sm text-muted-foreground uppercase tracking-wide">{t('tasksSectionTitle')}</h3>
+                      <CompletionCountBadge type="tasks" date={selectedDate.toString()} />
+                    </div>
+                    <ul className="space-y-3">
                       {habits
-                  .filter(habit => isHabitDue({
+                        .filter(habit => habit.isTask && isHabitDue({
                           habit,
                           timezone: settings.system.timezone,
-                    date: selectedDate
+                          date: selectedDateTime
                         }))
                         .map((habit) => {
-                    const completions = getCompletionsForDate({ habit, date: selectedDate, timezone: settings.system.timezone })
+                          const completions = getCompletionsForDate({ habit, date: selectedDateTime, timezone: settings.system.timezone })
                           const isCompleted = completions >= (habit.targetCompletions || 1)
                           return (
-                      <li key={habit.id} className="flex items-center justify-between gap-2">
+                            <li key={habit.id} className="flex items-center justify-between gap-2 px-3 py-2 rounded-lg hover:bg-muted/50 transition-colors">
-                        <span>
+                              <span className="flex items-center gap-2">
                                 <Linkify>{habit.name}</Linkify>
                               </span>
                               <div className="flex items-center gap-2">
@@ -102,7 +112,7 @@ export default function HabitCalendar() {
                                     </span>
                                   )}
                                   <button
-                              onClick={() => handleCompletePastHabit(habit, selectedDate)}
+                                    onClick={() => handleCompletePastHabit(habit, selectedDateTime)}
                                     disabled={isCompleted}
                                     className="relative h-4 w-4 hover:opacity-70 transition-opacity disabled:opacity-100"
                                   >
@@ -131,6 +141,67 @@ export default function HabitCalendar() {
                           )
                         })}
                     </ul>
+                  </div>
+                )}
+                <div>
+                  <div className="flex items-center justify-between mb-3">
+                    <h3 className="font-medium text-sm text-muted-foreground uppercase tracking-wide">{t('habitsSectionTitle')}</h3>
+                    <CompletionCountBadge type="habits" date={selectedDate.toString()} />
+                  </div>
+                  <ul className="space-y-3">
+                    {habits
+                      .filter(habit => !habit.isTask && isHabitDue({
+                        habit,
+                        timezone: settings.system.timezone,
+                        date: selectedDateTime
+                      }))
+                      .map((habit) => {
+                        const completions = getCompletionsForDate({ habit, date: selectedDateTime, timezone: settings.system.timezone })
+                        const isCompleted = completions >= (habit.targetCompletions || 1)
+                        return (
+                          <li key={habit.id} className="flex items-center justify-between gap-2 px-3 py-2 rounded-lg hover:bg-muted/50 transition-colors">
+                            <span className="flex items-center gap-2">
+                              <Linkify>{habit.name}</Linkify>
+                            </span>
+                            <div className="flex items-center gap-2">
+                              <div className="flex items-center gap-2">
+                                {habit.targetCompletions && (
+                                  <span className="text-sm text-muted-foreground">
+                                    {completions}/{habit.targetCompletions}
+                                  </span>
+                                )}
+                                <button
+                                  onClick={() => handleCompletePastHabit(habit, selectedDateTime)}
+                                  disabled={isCompleted}
+                                  className="relative h-4 w-4 hover:opacity-70 transition-opacity disabled:opacity-100"
+                                >
+                                  {isCompleted ? (
+                                    <CircleCheck className="h-4 w-4 text-green-500" />
+                                  ) : (
+                                    <div className="relative h-4 w-4">
+                                      <Circle className="absolute h-4 w-4 text-muted-foreground" />
+                                      <div
+                                        className="absolute h-4 w-4 rounded-full overflow-hidden"
+                                        style={{
+                                          background: `conic-gradient(
+                                        currentColor ${(completions / (habit.targetCompletions ?? 1)) * 360}deg,
+                                        transparent ${(completions / (habit.targetCompletions ?? 1)) * 360}deg 360deg
+                                      )`,
+                                          mask: 'radial-gradient(transparent 50%, black 51%)',
+                                          WebkitMask: 'radial-gradient(transparent 50%, black 51%)'
+                                        }}
+                                      />
+                                    </div>
+                                  )}
+                                </button>
+                              </div>
+                            </div>
+                          </li>
+                        )
+                      })}
+                  </ul>
+                </div>
+              </div>
             )}
           </CardContent>
         </Card>

components/HabitContextMenuItems.tsx

@@ -0,0 +1,158 @@
+import { Habit } from '@/lib/types';
+import { useHabits } from '@/hooks/useHabits';
+import { useAtom } from 'jotai';
+import { pomodoroAtom, settingsAtom, currentUserAtom } from '@/lib/atoms';
+import { d2t, getNow, isHabitDueToday, hasPermission } from '@/lib/utils';
+import { DropdownMenuItem, DropdownMenuSeparator } from '@/components/ui/dropdown-menu';
+import { ContextMenuItem, ContextMenuSeparator } from '@/components/ui/context-menu';
+import { Timer, Calendar, Pin, Edit, Archive, ArchiveRestore, Trash2 } from 'lucide-react';
+import { useTranslations } from 'next-intl';
+
+interface HabitContextMenuItemsProps {
+  habit: Habit;
+  onEditRequest: () => void;
+  onDeleteRequest: () => void;
+  context?: 'daily-overview' | 'habit-item';
+  onClose?: () => void; // Optional: To close the dropdown if an action is taken
+}
+
+export function HabitContextMenuItems({
+  habit,
+  onEditRequest,
+  onDeleteRequest,
+  context = 'habit-item',
+  onClose,
+}: HabitContextMenuItemsProps) {
+  const t = useTranslations('HabitContextMenuItems');
+  const { saveHabit, archiveHabit, unarchiveHabit } = useHabits();
+  const [settings] = useAtom(settingsAtom);
+  const [, setPomo] = useAtom(pomodoroAtom);
+  const [currentUser] = useAtom(currentUserAtom);
+
+  const canWrite = hasPermission(currentUser, 'habit', 'write'); // For UI disabling if not handled by useHabits' actions
+  const canInteract = hasPermission(currentUser, 'habit', 'interact');
+
+  const MenuItemComponent = context === 'daily-overview' ? ContextMenuItem : DropdownMenuItem;
+  const MenuSeparatorComponent = context === 'daily-overview' ? ContextMenuSeparator : DropdownMenuSeparator;
+
+  const taskIsDueToday = habit.isTask ? isHabitDueToday({ habit, timezone: settings.system.timezone }) : false;
+
+  const handleAction = (action: () => void) => {
+    action();
+    onClose?.();
+  };
+
+  return (
+    <>
+      {!habit.archived && (
+        <MenuItemComponent
+          disabled={!canInteract}
+          onClick={() => handleAction(() => {
+            setPomo((prev) => ({
+              ...prev,
+              show: true,
+              selectedHabitId: habit.id,
+            }));
+          })}
+        >
+          <Timer className="mr-2 h-4 w-4" />
+          <span>{t('startPomodoro')}</span>
+        </MenuItemComponent>
+      )}
+
+      {/* "Move to Today" option: Show if task is not due today */}
+      {habit.isTask && !habit.archived && !taskIsDueToday && (
+        <MenuItemComponent
+          disabled={!canWrite}
+          onClick={() => handleAction(() => {
+            const today = getNow({ timezone: settings.system.timezone });
+            saveHabit({ ...habit, frequency: d2t({ dateTime: today }) });
+          })}
+        >
+          <Calendar className="mr-2 h-4 w-4" />
+          <span>{t('moveToToday')}</span>
+        </MenuItemComponent>
+      )}
+
+      {/* "Move to Tomorrow" option: Show if task is due today OR not due today */}
+      {habit.isTask && !habit.archived && (
+        <MenuItemComponent
+          disabled={!canWrite}
+          onClick={() => handleAction(() => {
+            const tomorrow = getNow({ timezone: settings.system.timezone }).plus({ days: 1 });
+            saveHabit({ ...habit, frequency: d2t({ dateTime: tomorrow }) });
+          })}
+        >
+          <Calendar className="mr-2 h-4 w-4" />
+          <span>{t('moveToTomorrow')}</span>
+        </MenuItemComponent>
+      )}
+
+      {!habit.archived && (
+        <MenuItemComponent
+          disabled={!canWrite}
+          onClick={() => handleAction(() => saveHabit({ ...habit, pinned: !habit.pinned }))}
+        >
+          <Pin className="mr-2 h-4 w-4" />
+          <span>{t(habit.pinned ? 'unpin' : 'pin')}</span>
+        </MenuItemComponent>
+      )}
+
+      {context === 'habit-item' && !habit.archived && ( // Edit button visible in dropdown only for habit-item context on small screens
+        <MenuItemComponent
+          onClick={() => handleAction(onEditRequest)}
+          className="sm:hidden" // Kept the sm:hidden for HabitItem specific responsive behavior
+          disabled={!canWrite}
+        >
+          <Edit className="mr-2 h-4 w-4" />
+          <span>{t('edit')}</span>
+        </MenuItemComponent>
+      )}
+
+      {context === 'daily-overview' && !habit.archived && ( // Edit button always visible in dropdown for daily-overview context
+         <MenuItemComponent
+          onClick={() => handleAction(onEditRequest)}
+          disabled={!canWrite}
+        >
+          <Edit className="mr-2 h-4 w-4" />
+          <span>{t('edit')}</span>
+        </MenuItemComponent>
+      )}
+
+
+      {!habit.archived && (
+        <MenuItemComponent
+          disabled={!canWrite}
+          onClick={() => handleAction(() => archiveHabit(habit.id))}
+        >
+          <Archive className="mr-2 h-4 w-4" />
+          <span>{t('archive')}</span>
+        </MenuItemComponent>
+      )}
+
+      {habit.archived && (
+        <MenuItemComponent
+          disabled={!canWrite}
+          onClick={() => handleAction(() => unarchiveHabit(habit.id))}
+        >
+          <ArchiveRestore className="mr-2 h-4 w-4" />
+          <span>{t('unarchive')}</span>
+        </MenuItemComponent>
+      )}
+      
+      {context === 'habit-item' && !habit.archived && <MenuSeparatorComponent className="sm:hidden" />}
+
+      {(context === 'daily-overview' || habit.archived) && <MenuSeparatorComponent />}
+
+
+      <MenuItemComponent
+        onClick={() => handleAction(onDeleteRequest)}
+        className="text-red-600 focus:text-red-600 dark:text-red-400 dark:focus:text-red-400"
+        disabled={!canWrite} // Assuming delete is a write operation
+      >
+        <Trash2 className="mr-2 h-4 w-4" />
+        <span>{t('delete')}</span>
+      </MenuItemComponent>
+    </>
+  );
+}

components/HabitItem.tsx

@@ -1,21 +1,22 @@
-import { Habit } from '@/lib/types'
-import { useAtom } from 'jotai'
-import { settingsAtom, pomodoroAtom, browserSettingsAtom } from '@/lib/atoms'
-import { getTodayInTimezone, isSameDate, t2d, d2t, getNow, parseNaturalLanguageRRule, parseRRule, d2s } from '@/lib/utils'
 import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from '@/components/ui/card'
-import { Button } from '@/components/ui/button'
-import { Coins, Edit, Trash2, Check, Undo2, MoreVertical, Timer, Archive, ArchiveRestore } from 'lucide-react'
 import {
   DropdownMenu,
   DropdownMenuContent,
-  DropdownMenuItem,
-  DropdownMenuSeparator,
   DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu'
-import { useEffect, useState } from 'react'
 import { useHabits } from '@/hooks/useHabits'
-import { INITIAL_RECURRENCE_RULE } from '@/lib/constants'
+import { currentUserAtom, settingsAtom, usersAtom } from '@/lib/atoms'
-import { DateTime } from 'luxon'
+import { Habit, User } from '@/lib/types'
+import { convertMachineReadableFrequencyToHumanReadable, getCompletionsForToday, hasPermission, isTaskOverdue } from '@/lib/utils'
+import { useAtom } from 'jotai'
+import { Check, Coins, Edit, MoreVertical, Pin, Undo2 } from 'lucide-react'
+import { useTranslations } from 'next-intl'
+import { usePathname } from 'next/navigation'
+import { useEffect, useState } from 'react'
+import DrawingDisplay from './DrawingDisplay'
+import { HabitContextMenuItems } from './HabitContextMenuItems'
+import { Avatar, AvatarFallback, AvatarImage } from './ui/avatar'
+import { Button } from './ui/button'
 
 interface HabitItemProps {
   habit: Habit
@@ -23,19 +24,39 @@ interface HabitItemProps {
   onDelete: () => void
 }
 
+const renderUserAvatars = (habit: Habit, currentUser: User | null, usersData: { users: User[] }) => {
+  if (!habit.userIds || habit.userIds.length <= 1) return <></>;
+
+  return (
+    <div className="flex -space-x-2 ml-2 flex-shrink-0">
+      {habit.userIds?.filter((u) => u !== currentUser?.id).map(userId => {
+        const user = usersData.users.find(u => u.id === userId)
+        if (!user) return <></>;
+        return (
+          <Avatar key={user.id} className="h-6 w-6">
+            <AvatarImage src={user?.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}` || ""} />
+            <AvatarFallback>{user.username[0]}</AvatarFallback>
+          </Avatar>
+        )
+      })}
+    </div>
+  );
+};
+
+
 export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
-  const { completeHabit, undoComplete, archiveHabit, unarchiveHabit } = useHabits()
+  const { completeHabit, undoComplete } = useHabits()
   const [settings] = useAtom(settingsAtom)
-  const [_, setPomo] = useAtom(pomodoroAtom)
+  const completionsToday = getCompletionsForToday({ habit, timezone: settings.system.timezone })
-  const completionsToday = habit.completions?.filter(completion =>
-    isSameDate(t2d({ timestamp: completion, timezone: settings.system.timezone }), t2d({ timestamp: d2t({ dateTime: getNow({ timezone: settings.system.timezone }) }), timezone: settings.system.timezone }))
-  ).length || 0
   const target = habit.targetCompletions || 1
   const isCompletedToday = completionsToday >= target
   const [isHighlighted, setIsHighlighted] = useState(false)
-  const [browserSettings] = useAtom(browserSettingsAtom)
+  const t = useTranslations('HabitItem');
-  const isTasksView = browserSettings.viewType === 'tasks'
+  const [usersData] = useAtom(usersAtom)
-  const isRecurRule = !isTasksView
+  const pathname = usePathname();
+  const [currentUser] = useAtom(currentUserAtom)
+  const canWrite = hasPermission(currentUser, 'habit', 'write')
+  const canInteract = hasPermission(currentUser, 'habit', 'interact')
 
   useEffect(() => {
     const params = new URLSearchParams(window.location.search)
@@ -61,29 +82,68 @@ export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
       id={`habit-${habit.id}`}
       className={`h-full flex flex-col transition-all duration-500 ${isHighlighted ? 'bg-yellow-100 dark:bg-yellow-900' : ''} ${habit.archived ? 'opacity-75' : ''}`}
     >
-      <CardHeader className="flex-none">
+      <CardHeader className="flex-shrink-0">
-        <CardTitle className={`line-clamp-1 ${habit.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>{habit.name}</CardTitle>
+        <div className="flex justify-between items-start">
+          <CardTitle className={`line-clamp-1 ${habit.archived ? 'text-gray-400 dark:text-gray-500' : ''} flex items-center ${pathname.includes("tasks") ? 'w-full' : ''} justify-between`}>
+            <div className="flex items-center gap-1">
+              {habit.pinned && (
+                <Pin className="h-4 w-4 text-yellow-500" />
+              )}
+              <span>{habit.name}</span>
+            </div>
+            {isTaskOverdue(habit, settings.system.timezone) && (
+              <span className="ml-2 inline-flex items-center rounded-md bg-red-50 dark:bg-red-900/30 px-2 py-1 text-xs font-medium text-red-700 dark:text-red-400 ring-1 ring-inset ring-red-600/10 dark:ring-red-500/20">
+                {t('overdue')}
+              </span>
+            )}
+          </CardTitle>
+          {renderUserAvatars(habit, currentUser as User, usersData)}
+        </div>
+        {(habit.description || habit.drawing) && (
+          <div className={`flex gap-4 mt-2 ${!habit.description ? 'justify-end' : ''}`}>
             {habit.description && (
-          <CardDescription className={`whitespace-pre-line ${habit.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>
+              <CardDescription className={`whitespace-pre-line flex-1 min-w-0 break-words ${habit.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>
                 {habit.description}
               </CardDescription>
             )}
+            {habit.drawing && (
+              <div className="flex-shrink-0">
+                <DrawingDisplay
+                  drawingData={habit.drawing} 
+                  width={120} 
+                  height={80}
+                  className=""
+                />
+              </div>
+            )}
+          </div>
+        )}
       </CardHeader>
-      <CardContent className="flex-1">
+      <CardContent className="flex-grow flex flex-col justify-end">
-        <p className={`text-sm ${habit.archived ? 'text-gray-400 dark:text-gray-500' : 'text-gray-500'}`}>When: {isRecurRule ? parseRRule(habit.frequency || INITIAL_RECURRENCE_RULE).toText() : d2s({ dateTime: t2d({ timestamp: habit.frequency, timezone: settings.system.timezone }), timezone: settings.system.timezone, format: DateTime.DATE_MED_WITH_WEEKDAY })}</p>
+        <div className="mt-auto">
+          <p className={`text-sm ${habit.archived ? 'text-gray-400 dark:text-gray-500' : 'text-gray-500'}`}>
+            {t('whenLabel', {
+              frequency: convertMachineReadableFrequencyToHumanReadable({
+                frequency: habit.frequency,
+                isRecurRule: pathname.includes("habits"),
+                timezone: settings.system.timezone
+              })
+            })}
+          </p>
           <div className="flex items-center mt-2">
             <Coins className={`h-4 w-4 mr-1 ${habit.archived ? 'text-gray-400 dark:text-gray-500' : 'text-yellow-400'}`} />
-          <span className={`text-sm font-medium ${habit.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>{habit.coinReward} coins per completion</span>
+            <span className={`text-sm font-medium ${habit.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>{t('coinsPerCompletion', { count: habit.coinReward })}</span>
+          </div>
         </div>
       </CardContent>
-      <CardFooter className="flex justify-between gap-2">
+      <CardFooter className="flex-shrink-0 flex justify-between gap-2">
         <div className="flex gap-2">
           <div className="relative">
             <Button
               variant={isCompletedToday ? "secondary" : "default"}
               size="sm"
               onClick={async () => await completeHabit(habit)}
-              disabled={habit.archived || (isCompletedToday && completionsToday >= target)}
+              disabled={!canInteract || habit.archived || (isCompletedToday && completionsToday >= target)}
               className={`overflow-hidden w-24 sm:w-auto ${habit.archived ? 'cursor-not-allowed' : ''}`}
             >
               <Check className="h-4 w-4 sm:mr-2" />
@@ -91,19 +151,19 @@ export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
                 {isCompletedToday ? (
                   target > 1 ? (
                     <>
-                      <span className="sm:hidden">{completionsToday}/{target}</span>
+                      <span className="sm:hidden">{t('completedStatusCountMobile', { completed: completionsToday, target })}</span>
-                      <span className="hidden sm:inline">Completed ({completionsToday}/{target})</span>
+                      <span className="hidden sm:inline">{t('completedStatusCount', { completed: completionsToday, target })}</span>
                     </>
                   ) : (
-                    'Completed'
+                    t('completedStatus')
                   )
                 ) : (
                   target > 1 ? (
                     <>
-                      <span className="sm:hidden">{completionsToday}/{target}</span>
+                      <span className="sm:hidden">{t('completeButtonCountMobile', { completed: completionsToday, target })}</span>
-                      <span className="hidden sm:inline">Complete ({completionsToday}/{target})</span>
+                      <span className="hidden sm:inline">{t('completeButtonCount', { completed: completionsToday, target })}</span>
                     </>
-                  ) : 'Complete'
+                  ) : t('completeButton')
                 )}
               </span>
               {habit.targetCompletions && habit.targetCompletions > 1 && (
@@ -121,10 +181,11 @@ export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
               variant="outline"
               size="sm"
               onClick={async () => await undoComplete(habit)}
+              disabled={!canWrite}
               className="w-10 sm:w-auto"
             >
               <Undo2 className="h-4 w-4" />
-              <span className="hidden sm:inline ml-2">Undo</span>
+              <span className="hidden sm:inline ml-2">{t('undoButton')}</span>
             </Button>
           )}
         </div>
@@ -134,59 +195,26 @@ export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
               variant="edit"
               size="sm"
               onClick={onEdit}
+              disabled={!canWrite}
               className="hidden sm:flex"
             >
               <Edit className="h-4 w-4" />
-              <span className="ml-2">Edit</span>
+              <span className="ml-2">{t('editButton')}</span>
             </Button>
           )}
-          <DropdownMenu>
+          <DropdownMenu modal={false}>
             <DropdownMenuTrigger asChild>
               <Button variant="ghost" size="sm" className="h-8 w-8 p-0">
                 <MoreVertical className="h-4 w-4" />
               </Button>
             </DropdownMenuTrigger>
             <DropdownMenuContent align="end">
-              {!habit.archived && (
+              <HabitContextMenuItems
-                <DropdownMenuItem onClick={() => {
+                habit={habit}
-                  setPomo((prev) => ({
+                onEditRequest={onEdit}
-                    ...prev,
+                onDeleteRequest={onDelete}
-                    show: true,
+                context="habit-item"
-                    selectedHabitId: habit.id
+              />
-                  }))
-                }}>
-                  <Timer className="mr-2 h-4 w-4" />
-                  <span>Start Pomodoro</span>
-                </DropdownMenuItem>
-              )}
-              {!habit.archived && (
-                <DropdownMenuItem onClick={() => archiveHabit(habit.id)}>
-                  <Archive className="mr-2 h-4 w-4" />
-                  <span>Archive</span>
-                </DropdownMenuItem>
-              )}
-              {habit.archived && (
-                <DropdownMenuItem onClick={() => unarchiveHabit(habit.id)}>
-                  <ArchiveRestore className="mr-2 h-4 w-4" />
-                  <span>Unarchive</span>
-                </DropdownMenuItem>
-              )}
-              <DropdownMenuItem
-                onClick={onEdit}
-                className="sm:hidden"
-                disabled={habit.archived}
-              >
-                <Edit className="mr-2 h-4 w-4" />
-                Edit
-              </DropdownMenuItem>
-              <DropdownMenuSeparator className="sm:hidden" />
-              <DropdownMenuItem
-                className="text-red-600 focus:text-red-600 dark:text-red-400 dark:focus:text-red-400 cursor-pointer"
-                onClick={onDelete}
-              >
-                <Trash2 className="mr-2 h-4 w-4" />
-                Delete
-              </DropdownMenuItem>
             </DropdownMenuContent>
           </DropdownMenu>
         </div>
@@ -194,4 +222,3 @@ export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
     </Card>
   )
 }
-

components/HabitList.tsx

@@ -1,30 +1,117 @@
 'use client'
 
-import { useState } from 'react'
-import { Plus, ListTodo } from 'lucide-react'
-import { useAtom } from 'jotai'
-import { habitsAtom, settingsAtom, browserSettingsAtom } from '@/lib/atoms'
-import EmptyState from './EmptyState'
 import { Button } from '@/components/ui/button'
-import HabitItem from './HabitItem'
+import { Input } from '@/components/ui/input'; // Added
+import { Label } from '@/components/ui/label'; // Added
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select'; // Added
+import { useHabits } from '@/hooks/useHabits'
+import { habitsAtom } from '@/lib/atoms'
+import { HabitIcon, TaskIcon } from '@/lib/constants'
+import { Habit } from '@/lib/types'
+import { getHabitFreq } from '@/lib/utils'; // Added
+import { useAtom } from 'jotai'
+import { ArrowDownWideNarrow, ArrowUpNarrowWide, Plus, Search } from 'lucide-react'; // Added sort icons, Search icon
+import { DateTime } from 'luxon'; // Added
+import { useTranslations } from 'next-intl'
+import { useEffect, useMemo, useState } from 'react'; // Added useMemo, useEffect
 import AddEditHabitModal from './AddEditHabitModal'
 import ConfirmDialog from './ConfirmDialog'
-import { Habit } from '@/lib/types'
+import EmptyState from './EmptyState'
-import { useHabits } from '@/hooks/useHabits'
+import HabitItem from './HabitItem'
-import { HabitIcon, TaskIcon } from '@/lib/constants'
 
-export default function HabitList() {
+export default function HabitList({ isTasksView }: { isTasksView: boolean}) {
+  const t = useTranslations('HabitList');
   const { saveHabit, deleteHabit } = useHabits()
-  const [habitsData, setHabitsData] = useAtom(habitsAtom)
+  const [habitsData] = useAtom(habitsAtom) // setHabitsData removed as it's not used
-  const [browserSettings] = useAtom(browserSettingsAtom)
+
-  const isTasksView = browserSettings.viewType === 'tasks'
+  type SortableField = 'name' | 'coinReward' | 'dueDate' | 'frequency';
-  const habits = habitsData.habits.filter(habit => 
+  type SortOrder = 'asc' | 'desc';
+
+  const [searchTerm, setSearchTerm] = useState('');
+  const [sortBy, setSortBy] = useState<SortableField>('name');
+  const [sortOrder, setSortOrder] = useState<SortOrder>('asc');
+
+  useEffect(() => {
+    if (isTasksView && sortBy === 'frequency') {
+      setSortBy('name');
+    } else if (!isTasksView && sortBy === 'dueDate') {
+      setSortBy('name');
+    }
+  }, [isTasksView, sortBy]);
+
+  const compareHabits = useMemo(() => {
+    return (a: Habit, b: Habit, currentSortBy: SortableField, currentSortOrder: SortOrder, tasksView: boolean): number => {
+      let comparison = 0;
+      switch (currentSortBy) {
+        case 'name':
+          comparison = a.name.localeCompare(b.name);
+          break;
+        case 'coinReward':
+          comparison = a.coinReward - b.coinReward;
+          break;
+        case 'dueDate':
+          if (tasksView && a.isTask && b.isTask) {
+            const dateA = DateTime.fromISO(a.frequency);
+            const dateB = DateTime.fromISO(b.frequency);
+            if (dateA.isValid && dateB.isValid) comparison = dateA.toMillis() - dateB.toMillis();
+            else if (dateA.isValid) comparison = -1; // Valid dates first
+            else if (dateB.isValid) comparison = 1;
+            // If both invalid, comparison remains 0
+          }
+          break;
+        case 'frequency':
+          if (!tasksView && !a.isTask && !b.isTask) {
+            const freqOrder = ['daily', 'weekly', 'monthly', 'yearly'];
+            const freqAVal = getHabitFreq(a);
+            const freqBVal = getHabitFreq(b);
+            comparison = freqOrder.indexOf(freqAVal) - freqOrder.indexOf(freqBVal);
+          }
+          break;
+      }
+      return currentSortOrder === 'asc' ? comparison : -comparison;
+    };
+  }, []);
+
+  const allHabitsInView = useMemo(() => {
+    return habitsData.habits.filter(habit =>
       isTasksView ? habit.isTask : !habit.isTask
-  )
+    );
-  const activeHabits = habits.filter(h => !h.archived)
+  }, [habitsData.habits, isTasksView]);
-  const archivedHabits = habits.filter(h => h.archived)
+
-  const [settings] = useAtom(settingsAtom)
+  const searchedHabits = useMemo(() => {
-  const [isModalOpen, setIsModalOpen] = useState(false)
+    if (!searchTerm.trim()) {
+      return allHabitsInView;
+    }
+    const lowercasedSearchTerm = searchTerm.toLowerCase();
+    return allHabitsInView.filter(habit =>
+      habit.name.toLowerCase().includes(lowercasedSearchTerm) ||
+      (habit.description && habit.description.toLowerCase().includes(lowercasedSearchTerm))
+    );
+  }, [allHabitsInView, searchTerm]);
+
+  const activeHabits = useMemo(() => {
+    return searchedHabits
+      .filter(h => !h.archived)
+      .sort((a, b) => {
+        if (a.pinned && !b.pinned) return -1;
+        if (!a.pinned && b.pinned) return 1;
+        // For items in the same pinned group (both pinned or both not pinned), apply general sort
+        return compareHabits(a, b, sortBy, sortOrder, isTasksView);
+      });
+  }, [searchedHabits, sortBy, sortOrder, isTasksView, compareHabits]);
+
+  const archivedHabits = useMemo(() => {
+    return searchedHabits
+      .filter(h => h.archived)
+      .sort((a, b) => compareHabits(a, b, sortBy, sortOrder, isTasksView));
+  }, [searchedHabits, sortBy, sortOrder, isTasksView, compareHabits]);
+  const [modalConfig, setModalConfig] = useState<{
+    isOpen: boolean,
+    isTask: boolean
+  }>({
+    isOpen: false,
+    isTask: false
+  })
   const [editingHabit, setEditingHabit] = useState<Habit | null>(null)
   const [deleteConfirmation, setDeleteConfirmation] = useState<{ isOpen: boolean, habitId: string | null }>({
     isOpen: false,
@@ -33,22 +120,63 @@ export default function HabitList() {
 
 
   return (
-    <div className="container mx-auto px-4 py-8">
+    <div>
       <div className="flex justify-between items-center mb-6">
-        <h1 className="text-3xl font-bold">
+        <h1 className="text-xl xs:text-3xl font-bold">
-          {isTasksView ? 'My Tasks' : 'My Habits'}
+          {t(isTasksView ? 'myTasks' : 'myHabits')}
         </h1>
-        <Button onClick={() => setIsModalOpen(true)}>
+        <span>
-          <Plus className="mr-2 h-4 w-4" /> {isTasksView ? 'Add Task' : 'Add Habit'}
+          <Button onClick={() => setModalConfig({ isOpen: true, isTask: isTasksView })}>
+            <Plus className='mr-2 h-4 w-4' />{isTasksView ? t("addTaskButton") : t("addHabitButton")}
+          </Button>
+        </span>
+      </div>
+
+      {/* Search and Sort Controls */}
+      <div className="flex flex-col sm:flex-row items-center gap-4 my-4">
+        <div className="relative flex-grow w-full sm:w-auto">
+          <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+            <Search className="h-5 w-5 text-muted-foreground" />
+          </div>
+          <Input
+            type="search"
+            placeholder={t(isTasksView ? 'searchTasksPlaceholder' : 'searchHabitsPlaceholder')}
+            value={searchTerm}
+            onChange={(e) => setSearchTerm(e.target.value)}
+            className="pl-10 w-full"
+          />
+        </div>
+        <div className="flex items-center gap-2 self-start sm:self-center w-full sm:w-auto">
+          <Label htmlFor="sort-by" className="text-sm font-medium whitespace-nowrap sr-only sm:not-sr-only">{t('sortByLabel')}</Label>
+          <Select value={sortBy} onValueChange={(value) => setSortBy(value as SortableField)}>
+            <SelectTrigger id="sort-by" className="w-full sm:w-[180px]">
+              <SelectValue placeholder={t('sortByLabel')} />
+            </SelectTrigger>
+            <SelectContent>
+              <SelectItem value="name">{t('sortByName')}</SelectItem>
+              <SelectItem value="coinReward">{t('sortByCoinReward')}</SelectItem>
+              {isTasksView && <SelectItem value="dueDate">{t('sortByDueDate')}</SelectItem>}
+              {!isTasksView && <SelectItem value="frequency">{t('sortByFrequency')}</SelectItem>}
+            </SelectContent>
+          </Select>
+          <Button variant="outline" size="icon" onClick={() => setSortOrder(prev => prev === 'asc' ? 'desc' : 'asc')}>
+            {sortOrder === 'asc' ? <ArrowUpNarrowWide className="h-4 w-4" /> : <ArrowDownWideNarrow className="h-4 w-4" />}
+            <span className="sr-only">{t('toggleSortOrderAriaLabel')}</span>
           </Button>
         </div>
+      </div>
+
       <div className="grid grid-cols-1 md:grid-cols-2 gap-4 items-stretch">
-        {activeHabits.length === 0 ? (
+        {activeHabits.length === 0 && searchTerm.trim() ? (
+          <div className="col-span-2 text-center text-muted-foreground py-8">
+            {t(isTasksView ? 'noTasksFoundMessage' : 'noHabitsFoundMessage')}
+          </div>
+        ) : activeHabits.length === 0 ? (
           <div className="col-span-2">
             <EmptyState
               icon={isTasksView ? TaskIcon : HabitIcon}
-              title={isTasksView ? "No tasks yet" : "No habits yet"}
+              title={t(isTasksView ? 'emptyStateTasksTitle' : 'emptyStateHabitsTitle')}
-              description={isTasksView ? "Create your first task to start tracking your progress" : "Create your first habit to start tracking your progress"}
+              description={t(isTasksView ? 'emptyStateTasksDescription' : 'emptyStateHabitsDescription')}
             />
           </div>
         ) : (
@@ -58,7 +186,7 @@ export default function HabitList() {
               habit={habit}
               onEdit={() => {
                 setEditingHabit(habit)
-                setIsModalOpen(true)
+                setModalConfig({ isOpen: true, isTask: isTasksView })
               }}
               onDelete={() => setDeleteConfirmation({ isOpen: true, habitId: habit.id })}
             />
@@ -67,9 +195,9 @@ export default function HabitList() {
 
         {archivedHabits.length > 0 && (
           <>
-            <div className="col-span-2 relative flex items-center my-6">
+            <div className="col-span-1 sm:col-span-2 relative flex items-center my-6">
               <div className="flex-grow border-t border-gray-300 dark:border-gray-600" />
-              <span className="mx-4 text-sm text-gray-500 dark:text-gray-400">Archived</span>
+              <span className="mx-4 text-sm text-gray-500 dark:text-gray-400">{t('archivedSectionTitle')}</span>
               <div className="flex-grow border-t border-gray-300 dark:border-gray-600" />
             </div>
             {archivedHabits.map((habit: Habit) => (
@@ -78,7 +206,7 @@ export default function HabitList() {
                 habit={habit}
                 onEdit={() => {
                   setEditingHabit(habit)
-                  setIsModalOpen(true)
+                  setModalConfig({ isOpen: true, isTask: isTasksView })
                 }}
                 onDelete={() => setDeleteConfirmation({ isOpen: true, habitId: habit.id })}
               />
@@ -86,18 +214,19 @@ export default function HabitList() {
           </>
         )}
       </div>
-      {isModalOpen &&
+      {modalConfig.isOpen &&
         <AddEditHabitModal
           onClose={() => {
-            setIsModalOpen(false)
+            setModalConfig({ isOpen: false, isTask: false })
             setEditingHabit(null)
           }}
           onSave={async (habit) => {
-            await saveHabit({ ...habit, id: editingHabit?.id })
+            await saveHabit({ ...habit, id: editingHabit?.id, isTask: modalConfig.isTask })
-            setIsModalOpen(false)
+            setModalConfig({ isOpen: false, isTask: false })
             setEditingHabit(null)
           }}
           habit={editingHabit}
+          isTask={modalConfig.isTask}
         />
       }
       <ConfirmDialog
@@ -109,9 +238,9 @@ export default function HabitList() {
           }
           setDeleteConfirmation({ isOpen: false, habitId: null })
         }}
-        title={isTasksView ? "Delete Task" : "Delete Habit"}
+        title={t(isTasksView ? 'deleteTaskDialogTitle' : 'deleteHabitDialogTitle')}
-        message={isTasksView ? "Are you sure you want to delete this task? This action cannot be undone." : "Are you sure you want to delete this habit? This action cannot be undone."}
+        message={t(isTasksView ? 'deleteTaskDialogMessage' : 'deleteHabitDialogMessage')}
-        confirmText="Delete"
+        confirmText={t('deleteButton')}
       />
     </div>
   )

components/HabitStreak.tsx

@@ -1,18 +1,24 @@
 'use client'
 
-import { Habit } from '@/lib/types'
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
-import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
+import { completedHabitsMapAtom, hasTasksAtom, settingsAtom } from '@/lib/atoms'; // Added completedHabitsMapAtom
-import { d2s, getNow, t2d, getCompletedHabitsForDate } from '@/lib/utils'
+import { Habit } from '@/lib/types';
-import { LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer } from 'recharts'
+import { d2s, getNow } from '@/lib/utils'; // Removed getCompletedHabitsForDate
-import { useAtom } from 'jotai'
+import { useAtom } from 'jotai';
-import { settingsAtom } from '@/lib/atoms'
+import { useTranslations } from 'next-intl';
+import { CartesianGrid, Line, LineChart, ResponsiveContainer, Tooltip, XAxis, YAxis } from 'recharts';
+
 
 interface HabitStreakProps {
   habits: Habit[]
 }
 
 export default function HabitStreak({ habits }: HabitStreakProps) {
+  const t = useTranslations('HabitStreak');
   const [settings] = useAtom(settingsAtom)
+  const [hasTasks] = useAtom(hasTasksAtom)
+  const [completedHabitsMap] = useAtom(completedHabitsMapAtom) // Use the atom
+
   // Get the last 7 days of data
   const dates = Array.from({ length: 7 }, (_, i) => {
     const d = getNow({ timezone: settings.system.timezone });
@@ -20,21 +26,24 @@ export default function HabitStreak({ habits }: HabitStreakProps) {
   }).reverse()
 
   const completions = dates.map(date => {
-    const completedCount = getCompletedHabitsForDate({
+    // Get completed habits for the date from the map
-      habits,
+    const completedOnDate = completedHabitsMap.get(date) || [];
-      date: t2d({ timestamp: date, timezone: settings.system.timezone }),
+
-      timezone: settings.system.timezone
+    // Filter the completed list to count habits and tasks
-    }).length;
+    const completedHabitsCount = completedOnDate.filter(h => !h.isTask).length;
+    const completedTasksCount = completedOnDate.filter(h => h.isTask).length;
+
     return {
       date,
-      completed: completedCount
+      habits: completedHabitsCount,
+      tasks: completedTasksCount
     };
   });
 
   return (
     <Card>
       <CardHeader>
-        <CardTitle>Daily Habit Completion Streak</CardTitle>
+        <CardTitle>{t('dailyCompletionStreakTitle')}</CardTitle>
       </CardHeader>
       <CardContent>
         <div className="w-full aspect-[2/1]">
@@ -50,15 +59,29 @@ export default function HabitStreak({ habits }: HabitStreakProps) {
             >
               <CartesianGrid strokeDasharray="3 3" />
               <XAxis dataKey="date" />
-              <YAxis />
+              <YAxis allowDecimals={false} />
-              <Tooltip formatter={(value) => [`${value} habits`, 'Completed']} />
+              <Tooltip formatter={(value, name) => {
+                const translatedName = name === 'habits' ? t('tooltipHabitsLabel') : t('tooltipTasksLabel');
+                return [`${value} ${translatedName}`, t('tooltipCompletedLabel')];
+              }} />
               <Line
                 type="monotone"
-                dataKey="completed"
+                name={t('tooltipHabitsLabel')}
+                dataKey="habits"
                 stroke="#14b8a6"
                 strokeWidth={2}
                 dot={false}
               />
+              {hasTasks && (
+                <Line
+                  type="monotone"
+                  name={t('tooltipTasksLabel')}
+                  dataKey="tasks"
+                  stroke="#f59e0b"
+                  strokeWidth={2}
+                  dot={false}
+                />
+              )}
             </LineChart>
           </ResponsiveContainer>
         </div>

components/Header.tsx

@@ -1,36 +1,13 @@
-'use client'
-
-import { useState } from 'react'
-import { useAtom } from 'jotai'
-import { coinsAtom, settingsAtom, browserSettingsAtom } from '@/lib/atoms'
-import { useCoins } from '@/hooks/useCoins'
-import { FormattedNumber } from '@/components/FormattedNumber'
-import { Bell, Menu, Settings, User, Info, Coins } from 'lucide-react'
-import { Button } from '@/components/ui/button'
 import { Logo } from '@/components/Logo'
-import {
-  DropdownMenu,
-  DropdownMenuContent,
-  DropdownMenuItem,
-  DropdownMenuTrigger,
-} from '@/components/ui/dropdown-menu'
-import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
-import AboutModal from './AboutModal'
 import Link from 'next/link'
-import dynamic from 'next/dynamic'
+import HeaderActions from './HeaderActions'
-import { Profile } from './Profile'
 
 interface HeaderProps {
   className?: string
 }
 
-const TodayEarnedCoins = dynamic(() => import('./TodayEarnedCoins'), { ssr: false })
 
 export default function Header({ className }: HeaderProps) {
-  const [settings] = useAtom(settingsAtom)
-  const [coins] = useAtom(coinsAtom)
-  const [browserSettings] = useAtom(browserSettingsAtom)
-  const isTasksView = browserSettings.viewType === 'tasks'
   return (
     <>
       <header className={`border-b bg-white dark:bg-gray-800 shadow-sm ${className || ''}`}>
@@ -39,25 +16,7 @@ export default function Header({ className }: HeaderProps) {
             <Link href="/" className="mr-3 sm:mr-4">
               <Logo />
             </Link>
-            <div className="flex items-center gap-1 sm:gap-2">
+            <HeaderActions />
-              <Link href="/coins" className="flex items-center gap-1 sm:gap-2 px-3 py-1.5 bg-white hover:bg-gray-50 dark:bg-gray-700 dark:hover:bg-gray-600 rounded-full transition-colors border border-gray-200 dark:border-gray-600">
-                <Coins className="h-5 w-5 text-yellow-500 dark:text-yellow-400" />
-                <div className="flex items-baseline gap-1 sm:gap-2">
-                  <FormattedNumber
-                    amount={coins.balance}
-                    settings={settings}
-                    className="text-gray-800 dark:text-gray-100 font-medium text-lg"
-                  />
-                  <div className="hidden sm:block">
-                    <TodayEarnedCoins />
-                  </div>
-                </div>
-              </Link>
-              <Button variant="ghost" size="icon" aria-label="Notifications">
-                <Bell className="h-5 w-5" />
-              </Button>
-              <Profile />
-            </div>
           </div>
         </div>
       </header>

components/HeaderActions.tsx

@@ -0,0 +1,38 @@
+'use client'
+
+import Link from 'next/link'
+import { useAtom } from 'jotai'
+import { settingsAtom } from '@/lib/atoms'
+import { useCoins } from '@/hooks/useCoins'
+import { FormattedNumber } from '@/components/FormattedNumber'
+import { Coins } from 'lucide-react'
+import NotificationBell from './NotificationBell'
+import dynamic from 'next/dynamic'
+import { Profile } from './Profile'
+
+const TodayEarnedCoins = dynamic(() => import('./TodayEarnedCoins'), { ssr: false })
+
+export default function HeaderActions() {
+  const [settings] = useAtom(settingsAtom)
+  const { balance } = useCoins()
+
+  return (
+    <div className="flex items-center gap-1 sm:gap-2">
+      <Link href="/coins" className="flex items-center gap-1 sm:gap-2 px-3 py-1.5 bg-white hover:bg-gray-50 dark:bg-gray-700 dark:hover:bg-gray-600 rounded-full transition-colors border border-gray-200 dark:border-gray-600">
+        <Coins className="h-5 w-5 text-yellow-500 dark:text-yellow-400" />
+        <div className="flex items-baseline gap-1 sm:gap-2">
+          <FormattedNumber
+            amount={balance}
+            settings={settings}
+            className="text-gray-800 dark:text-gray-100 font-medium text-lg"
+          />
+          <div className="hidden sm:block">
+            <TodayEarnedCoins />
+          </div>
+        </div>
+      </Link>
+      <NotificationBell />
+      <Profile />
+    </div>
+  )
+}

components/Layout.tsx

@@ -1,20 +1,26 @@
 import ClientWrapper from './ClientWrapper'
 import Header from './Header'
 import Navigation from './Navigation'
+import PermissionError from './PermissionError'
 
 export default function Layout({ children }: { children: React.ReactNode }) {
   return (
     <div className="flex flex-col h-screen bg-gray-100 dark:bg-gray-900 overflow-hidden">
+      
         <Header className="sticky top-0 z-50" />
         <div className="flex flex-1 overflow-hidden">
-        <Navigation viewPort='main' />
+          <Navigation position='main' />
           <div className="flex-1 flex flex-col">
             <main className="flex-1 overflow-x-hidden overflow-y-auto bg-gray-100 dark:bg-gray-900 relative">
+              {/* responsive container (optimized for mobile) */}
+              <div className="mx-auto px-2 xs:px-4 py-8 max-w-sm xs:max-w-full">
               <ClientWrapper>
+                <PermissionError />
                 {children}
               </ClientWrapper>
+            </div>
           </main>
-          <Navigation viewPort='mobile' />
+          <Navigation position='mobile' />
         </div>
       </div>
     </div>

components/LoadingSpinner.tsx

@@ -0,0 +1,61 @@
+'use client'
+
+import React, { useEffect, useState } from 'react';
+import { Coins } from 'lucide-react';
+import { Logo } from '@/components/Logo';
+
+const subtexts = [
+  "Unearthing your treasures",
+  "Polishing your gems",
+  "Mining for good habits",
+  "Stumbling upon brilliance",
+  "Discovering your potential",
+  "Crafting your success story",
+  "Forging new paths",
+  "Summoning success",
+  "Brewing brilliance",
+  "Charging up your awesome",
+  "Assembling achievements",
+  "Leveling up your day",
+  "Questing for quality",
+  "Unlocking awesomeness",
+  "Plotting your progress",
+];
+
+const LoadingSpinner: React.FC = () => {
+  const [currentSubtext, setCurrentSubtext] = useState<string>('Loading your data');
+  const [animatedDots, setAnimatedDots] = useState<string>('');
+
+  useEffect(() => {
+    const randomIndex = Math.floor(Math.random() * subtexts.length);
+    setCurrentSubtext(subtexts[randomIndex]);
+
+    const dotAnimationInterval = setInterval(() => {
+      setAnimatedDots(prevDots => {
+        if (prevDots.length >= 3) {
+          return '';
+        }
+        return prevDots + '.';
+      });
+    }, 200); // Adjust timing as needed
+
+    return () => clearInterval(dotAnimationInterval);
+  }, []);
+
+
+  return (
+    <div className="flex flex-col items-center justify-center h-screen">
+      <div className="flex flex-col items-center space-y-4">
+        <Coins className="h-12 w-12 animate-bounce text-yellow-500" />
+        <Logo />
+        {currentSubtext && (
+          <p className="text-lg text-gray-600 dark:text-gray-400">
+            {currentSubtext}{animatedDots}
+          </p>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default LoadingSpinner;

components/Logo.tsx

@@ -1,9 +1,9 @@
-import { Sparkles } from "lucide-react"
+import Image from "next/image"
 
 export function Logo() {
   return (
     <div className="flex items-center gap-2">
-      <Sparkles className="h-6 w-6 text-primary" />
+      <Image src="/icons/icon.png" alt="HabitTrove Logo" width={96} height={96} className="h-12 w-12 hidden xs:inline" />
       <span className="font-bold text-xl">HabitTrove</span>
     </div>
   )

components/ModalOverlay.tsx

@@ -0,0 +1,9 @@
+/**
+ * ModalOverlay provides a dimming effect for non-modal dialogs or popovers
+ * that need to appear modal (e.g., to prevent interaction with background elements).
+ * It should be rendered alongside the dialog/popover it's intended to overlay for.
+ * Ensure the dialog/popover has a z-index higher than this overlay (default z-40).
+ */
+export default function ModalOverlay() {
+  return <div className="fixed inset-0 z-50 bg-black/80" />
+}

components/NavDisplay.tsx

@@ -0,0 +1,61 @@
+import { useHelpers } from '@/lib/client-helpers';
+import Link from 'next/link';
+import { usePathname } from 'next/navigation';
+import { NavItemType } from './Navigation';
+
+export default function NavDisplay({ navItems, isMobile }: { navItems: NavItemType[], isMobile: boolean }) {
+  const pathname = usePathname();
+  const { isIOS } = useHelpers()
+
+  if (isMobile) {
+    return (
+        <>
+        {isMobile && (<div className={isIOS ? "pb-20" : "pb-16"} />)}
+        <nav className={`lg:hidden fixed bottom-0 left-0 right-0 bg-white dark:bg-gray-800 shadow-lg ${isIOS ? "pb-4" : ""}`}>
+            <div className="grid grid-cols-6 w-full">
+            {navItems.map((item) => (
+                <Link
+                key={item.label}
+                href={item.href}
+                className={"flex flex-col items-center py-2 hover:text-blue-600 dark:hover:text-blue-300 " +
+                    (pathname === (item.href) ?
+                    "text-blue-500 dark:text-blue-500" :
+                    "text-gray-300 dark:text-gray-300")
+                }
+                >
+                <item.icon className="h-6 w-6" />
+                <span className="text-xs mt-1">{item.label}</span>
+                </Link>
+            ))}
+            </div>
+        </nav>
+        </>
+    );
+  } else {
+    return (
+        <div className="hidden lg:flex lg:flex-shrink-0">
+            <div className="flex flex-col w-64">
+                <div className="flex flex-col h-0 flex-1 bg-gray-800">
+                    <div className="flex-1 flex flex-col pt-5 pb-4 overflow-y-auto">
+                        <nav className="mt-5 flex-1 px-2 space-y-1">
+                        {navItems.map((item) => (
+                            <Link
+                            key={item.label}
+                            href={item.href}
+                            className={"flex items-center px-2 py-2 font-medium rounded-md " +
+                                (pathname === (item.href) ?
+                                "text-blue-500 hover:text-blue-600 hover:bg-gray-700" :
+                                "text-gray-300 hover:text-white hover:bg-gray-700")}
+                            >
+                            <item.icon className="mr-4 flex-shrink-0 h-6 w-6" aria-hidden="true" />
+                            {item.label}
+                            </Link>
+                        ))}
+                        </nav>
+                    </div>
+                </div>
+            </div>
+        </div>
+    );
+  }
+}

components/Navigation.tsx

@@ -1,100 +1,40 @@
 'use client'
 
-import Link from 'next/link'
-import { Home, Calendar, List, Gift, Coins, Settings, Info, CheckSquare } from 'lucide-react'
-import { useAtom } from 'jotai'
-import { browserSettingsAtom } from '@/lib/atoms'
-import { useEffect, useState } from 'react'
-import AboutModal from './AboutModal'
 import { HabitIcon, TaskIcon } from '@/lib/constants'
+import { Calendar, Coins, Gift, Home } from 'lucide-react'
+import { useTranslations } from 'next-intl'
+import { ElementType, useEffect, useState } from 'react'
+import NavDisplay from './NavDisplay'
 
-type ViewPort = 'main' | 'mobile'
+export interface NavItemType {
-
+  icon: ElementType;
-const navItems = (isTasksView: boolean) => [
+  label: string;
-  { icon: Home, label: 'Dashboard', href: '/', position: 'main' },
+  href: string;
-  {
-    icon: isTasksView ? TaskIcon : HabitIcon,
-    label: isTasksView ? 'Tasks' : 'Habits',
-    href: '/habits',
-    position: 'main'
-  },
-  { icon: Calendar, label: 'Calendar', href: '/calendar', position: 'main' },
-  { icon: Gift, label: 'Wishlist', href: '/wishlist', position: 'main' },
-  { icon: Coins, label: 'Coins', href: '/coins', position: 'main' },
-]
-
-interface NavigationProps {
-  className?: string
-  viewPort: ViewPort
 }
 
-export default function Navigation({ className, viewPort }: NavigationProps) {
+export default function Navigation({ position }: { position: 'main' | 'mobile' }) {
-  const [showAbout, setShowAbout] = useState(false)
+  const t = useTranslations('Navigation');
-  const [isMobileView, setIsMobileView] = useState(false)
+  const [isMobile, setIsMobile] = useState(window.innerWidth < 1024);
-  const [browserSettings] = useAtom(browserSettingsAtom)
-  const isTasksView = browserSettings.viewType === 'tasks'
 
   useEffect(() => {
-    const handleResize = () => {
+    const handleResize = () => {setIsMobile(window.innerWidth < 1024); };
-      setIsMobileView(window.innerWidth < 1024)
+    window.addEventListener("resize", handleResize);
+    return () => window.removeEventListener("resize", handleResize);
+  }, [setIsMobile]);
+
+  const currentNavItems: NavItemType[] = [
+    { icon: Home, label: t('dashboard'), href: '/' },
+    { icon: HabitIcon, label: t('habits'), href: '/habits' },
+    { icon: TaskIcon, label: t('tasks'), href: '/tasks' },
+    { icon: Calendar, label: t('calendar'), href: '/calendar' },
+    { icon: Gift, label: t('wishlist'), href: '/wishlist' },
+    { icon: Coins, label: t('coins'), href: '/coins' },
+  ]
+
+  if ((position === 'mobile' && isMobile) || (position === 'main' && !isMobile)) {
+    return <NavDisplay navItems={currentNavItems} isMobile={isMobile} />
   }
-
+  else {
-    // Set initial value
+    return <></>
-    handleResize()
-
-    // Add event listener
-    window.addEventListener('resize', handleResize)
-
-    // Cleanup
-    return () => window.removeEventListener('resize', handleResize)
-  }, [])
-
-  if (viewPort === 'mobile' && isMobileView) {
-    return (
-      <>
-        <div className="pb-16" /> {/* Add padding at the bottom to prevent content from being hidden */}
-        <nav className="lg:hidden fixed bottom-0 left-0 right-0 bg-white dark:bg-gray-800 shadow-lg">
-          <div className="flex justify-around">
-            {[...navItems(isTasksView).filter(item => item.position === 'main'), ...navItems(isTasksView).filter(item => item.position === 'bottom')].map((item) => (
-              <Link
-                key={item.label}
-                href={item.href}
-                className="flex flex-col items-center py-2 text-gray-600 dark:text-gray-300 hover:text-blue-500 dark:hover:text-blue-400"
-              >
-                <item.icon className="h-6 w-6" />
-                <span className="text-xs mt-1">{item.label}</span>
-              </Link>
-            ))}
-          </div>
-        </nav>
-        <AboutModal isOpen={showAbout} onClose={() => setShowAbout(false)} />
-      </>
-    )
-  }
-
-  if (viewPort === 'main' && !isMobileView) {
-    return (
-      <div className="hidden lg:flex lg:flex-shrink-0">
-        <div className="flex flex-col w-64">
-          <div className="flex flex-col h-0 flex-1 bg-gray-800">
-            <div className="flex-1 flex flex-col pt-5 pb-4 overflow-y-auto">
-              <nav className="mt-5 flex-1 px-2 space-y-1">
-                {navItems(isTasksView).filter(item => item.position === 'main').map((item) => (
-                  <Link
-                    key={item.label}
-                    href={item.href}
-                    className="group flex items-center px-2 py-2 text-sm leading-6 font-medium rounded-md text-gray-300 hover:text-white hover:bg-gray-700"
-                  >
-                    <item.icon className="mr-4 flex-shrink-0 h-6 w-6 text-gray-400" aria-hidden="true" />
-                    {item.label}
-                  </Link>
-                ))}
-              </nav>
-            </div>
-          </div>
-        </div>
-        <AboutModal isOpen={showAbout} onClose={() => setShowAbout(false)} />
-      </div>
-    )
   }
 }

components/NotificationBell.tsx

@@ -0,0 +1,134 @@
+'use client'
+
+import { useMemo } from 'react'
+import { useAtom } from 'jotai'
+import { coinsAtom, habitsAtom, wishlistAtom, usersAtom, currentUserAtom } from '@/lib/atoms'
+import { Bell } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { useTranslations } from 'next-intl';
+import NotificationDropdown from './NotificationDropdown';
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu'
+import { updateLastNotificationReadTimestamp } from '@/app/actions/data';
+import { d2t, getNow, t2d } from '@/lib/utils';
+import { User, CoinTransaction } from '@/lib/types';
+
+export default function NotificationBell() {
+  const t = useTranslations('NotificationBell');
+  const [currentUser] = useAtom(currentUserAtom);
+  const [coinsData] = useAtom(coinsAtom)
+  const [habitsData] = useAtom(habitsAtom)
+  const [wishlistData] = useAtom(wishlistAtom)
+  const [usersData] = useAtom(usersAtom);
+
+  // --- Calculate Unread and Read Notifications ---
+  const { unreadNotifications, displayedReadNotifications } = useMemo(() => {
+    const unread: CoinTransaction[] = [];
+    const read: CoinTransaction[] = [];
+    const MAX_READ_NOTIFICATIONS = 10; // Limit the number of past notifications shown
+
+    if (!currentUser || !currentUser.id) {
+      return { unreadNotifications: [], displayedReadNotifications: [] };
+    }
+
+    const lastReadTimestamp = currentUser.lastNotificationReadTimestamp
+      ? t2d({ timestamp: currentUser.lastNotificationReadTimestamp, timezone: 'UTC' })
+      : null;
+
+    // Iterate through transactions (assuming they are sorted newest first)
+    for (const tx of coinsData.transactions) {
+      // Stop processing if we have enough read notifications
+      if (read.length >= MAX_READ_NOTIFICATIONS && (!lastReadTimestamp || t2d({ timestamp: tx.timestamp, timezone: 'UTC' }) <= lastReadTimestamp)) {
+        break; // Optimization: stop early if we have enough read and are past the unread ones
+      }
+
+      // Basic checks: must have a related item and be triggered by someone else
+      if (!tx.relatedItemId || tx.userId === currentUser.id) {
+        continue;
+      }
+
+      // Check if the transaction type indicates a notification-worthy event
+      const isRelevantType = tx.type === 'HABIT_COMPLETION' || tx.type === 'TASK_COMPLETION' || tx.type === 'WISH_REDEMPTION';
+      if (!isRelevantType) {
+        continue;
+      }
+
+      // Check if the related item is shared with the current user
+      let isShared = false;
+      const isHabitCompletion = tx.type === 'HABIT_COMPLETION' || tx.type === 'TASK_COMPLETION';
+      const isWishRedemption = tx.type === 'WISH_REDEMPTION';
+
+      if (isHabitCompletion) {
+        const habit = habitsData.habits.find(h => h.id === tx.relatedItemId);
+        if (habit?.userIds?.includes(currentUser.id) && tx.userId && habit.userIds.includes(tx.userId)) {
+          isShared = true;
+        }
+      } else if (isWishRedemption) {
+        const wish = wishlistData.items.find(w => w.id === tx.relatedItemId);
+        if (wish?.userIds?.includes(currentUser.id) && tx.userId && wish.userIds.includes(tx.userId)) {
+          isShared = true;
+        }
+      }
+
+      if (!isShared) {
+        continue; // Skip if not shared
+      }
+
+      // Transaction is relevant, determine if read or unread
+      const txTimestamp = t2d({ timestamp: tx.timestamp, timezone: 'UTC' });
+      if (!lastReadTimestamp || txTimestamp > lastReadTimestamp) {
+        unread.push(tx);
+      } else if (read.length < MAX_READ_NOTIFICATIONS) {
+        // Only add to read if we haven't hit the limit
+        read.push(tx);
+      }
+    }
+
+    // Transactions are assumed to be sorted newest first from the source
+    return { unreadNotifications: unread, displayedReadNotifications: read };
+  }, [coinsData.transactions, habitsData.habits, wishlistData.items, currentUser]);
+  // --- End Calculate Notifications ---
+
+  const unreadCount = unreadNotifications.length;
+
+  const handleNotificationClick = async () => {
+    if (!currentUser || !currentUser.id || unreadCount === 0) return; // Only update if there are unread notifications
+    try {
+      const nowTimestamp = d2t({ dateTime: getNow({}) });
+      await updateLastNotificationReadTimestamp(currentUser.id, nowTimestamp);
+    } catch (error) {
+      console.error(t('errorUpdateTimestamp'), error);
+    }
+  };
+
+  return (
+    <DropdownMenu onOpenChange={(open) => {
+      // Update timestamp only when opening the dropdown and there are unread notifications
+      if (open && unreadCount > 0) {
+        handleNotificationClick();
+      }
+    }}>
+      <DropdownMenuTrigger asChild>
+        <Button variant="ghost" size="icon" aria-label="Notifications" className="relative">
+          <Bell className="h-5 w-5" />
+          {unreadCount > 0 && (
+            <span className="absolute top-1 right-1 block h-2 w-2 rounded-full bg-red-500 ring-1 ring-white dark:ring-gray-800" />
+          )}
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent align="end" className="p-0 w-80 md:w-96">
+        <NotificationDropdown
+          currentUser={currentUser as User | null} // Cast needed as as currentUser can be undefined
+          unreadNotifications={unreadNotifications}
+          displayedReadNotifications={displayedReadNotifications}
+          habitsData={habitsData} // Pass necessary data down
+          wishlistData={wishlistData}
+          usersData={usersData}
+        />
+      </DropdownMenuContent>
+    </DropdownMenu>
+  );
+}

components/NotificationDropdown.tsx

@@ -0,0 +1,133 @@
+import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
+import { DropdownMenuItem } from '@/components/ui/dropdown-menu';
+import { ScrollArea } from '@/components/ui/scroll-area';
+import { Separator } from '@/components/ui/separator';
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipProvider,
+  TooltipTrigger,
+} from '@/components/ui/tooltip';
+import { CoinTransaction, HabitsData, User, UserData, WishlistData } from '@/lib/types';
+import { t2d } from '@/lib/utils';
+import { Info } from 'lucide-react';
+import { useTranslations } from 'next-intl';
+import Link from 'next/link';
+
+interface NotificationDropdownProps {
+  currentUser: User | null;
+  unreadNotifications: CoinTransaction[];
+  displayedReadNotifications: CoinTransaction[];
+  habitsData: HabitsData; 
+  wishlistData: WishlistData;
+  usersData: UserData;
+}
+
+// Helper function to get the name of the related item
+const getRelatedItemName = (tx: CoinTransaction, habitsData: HabitsData, wishlistData: WishlistData): string | undefined => {
+  if (!tx.relatedItemId) return undefined;
+  if (tx.type === 'HABIT_COMPLETION' || tx.type === 'TASK_COMPLETION') {
+    return habitsData.habits.find(h => h.id === tx.relatedItemId)?.name;
+  }
+  if (tx.type === 'WISH_REDEMPTION') {
+    return wishlistData.items.find(w => w.id === tx.relatedItemId)?.name;
+  }
+  return undefined;
+};
+
+
+export default function NotificationDropdown({
+  currentUser,
+  unreadNotifications, // Use props directly
+  displayedReadNotifications, // Use props directly
+  habitsData,
+  wishlistData,
+  usersData,
+}: NotificationDropdownProps) {
+  const t = useTranslations('NotificationDropdown');
+
+  // Helper function to generate notification message, now using t
+  const getNotificationMessage = (tx: CoinTransaction, triggeringUser?: User, relatedItemName?: string): string => {
+    const username = triggeringUser?.username || t('defaultUsername');
+    const itemName = relatedItemName || t('defaultItemName');
+    switch (tx.type) {
+      case 'HABIT_COMPLETION':
+      case 'TASK_COMPLETION':
+        return t('userCompletedItem', { username, itemName });
+      case 'WISH_REDEMPTION':
+        return t('userRedeemedItem', { username, itemName });
+      default:
+        return t('activityRelatedToItem', { username, itemName });
+    }
+  };
+  
+  if (!currentUser) {
+    return <div className="p-4 text-sm text-gray-500">{t('notLoggedIn')}</div>;
+  }
+
+  const renderNotification = (tx: CoinTransaction, isUnread: boolean) => {
+    const triggeringUser = usersData.users.find(u => u.id === tx.userId);
+    const relatedItemName = getRelatedItemName(tx, habitsData, wishlistData);
+    const message = getNotificationMessage(tx, triggeringUser, relatedItemName); // Uses the new t-aware helper
+    const txTimestamp = t2d({ timestamp: tx.timestamp, timezone: 'UTC' });
+    const timeAgo = txTimestamp.toRelative(); 
+    const linkHref = `/coins?highlight=${tx.id}${tx.userId ? `&user=${tx.userId}` : ''}`;
+
+    return (
+      // Wrap the Link with DropdownMenuItem and use asChild to pass props
+      <DropdownMenuItem key={tx.id} asChild className={`p-0 focus:bg-inherit dark:focus:bg-inherit cursor-pointer`}>
+        <Link href={linkHref} className={`block hover:bg-gray-100 dark:hover:bg-gray-800 transition-colors ${isUnread ? 'bg-blue-50 dark:bg-blue-900/20' : ''}`} scroll={true}>
+          <div className="p-3 flex items-start gap-3">
+            <Avatar className="h-8 w-8 mt-1">
+              <AvatarImage src={triggeringUser?.avatarPath ? `/api/avatars/${triggeringUser.avatarPath.split('/').pop()}` : undefined} alt={triggeringUser?.username} />
+              <AvatarFallback>{triggeringUser?.username?.charAt(0).toUpperCase() || '?'}</AvatarFallback>
+            </Avatar>
+            <div className="flex-1">
+              <p className={`text-sm ${isUnread ? 'font-semibold' : ''}`}>{message}</p>
+              <p className="text-xs text-gray-500 dark:text-gray-400">{timeAgo}</p>
+            </div>
+          </div>
+        </Link>
+      </DropdownMenuItem>
+    );
+  };
+
+  return (
+    <TooltipProvider>
+      {/* Removed the outer div as width is now set on DropdownMenuContent in NotificationBell */}
+      <>
+        <div className="p-3 border-b border-gray-200 dark:border-gray-700 flex items-center gap-2">
+          <h4 className="text-sm font-medium">{t('notificationsTitle')}</h4>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <Info className="h-4 w-4 text-muted-foreground cursor-help" />
+            </TooltipTrigger>
+            <TooltipContent side="left" className="max-w-xs">
+              <p className="text-xs">
+                {t('notificationsTooltip')}
+              </p>
+            </TooltipContent>
+          </Tooltip>
+        </div>
+        <ScrollArea className="h-[400px]">
+          {unreadNotifications.length === 0 && displayedReadNotifications.length === 0 && (
+            <div className="p-4 text-center text-sm text-gray-500">{t('noNotificationsYet')}</div>
+          )}
+
+          {unreadNotifications.length > 0 && (
+            <>
+              {unreadNotifications.map(tx => renderNotification(tx, true))}
+              {displayedReadNotifications.length > 0 && <Separator className="my-2" />}
+            </>
+          )}
+
+          {displayedReadNotifications.length > 0 && (
+            <>
+              {displayedReadNotifications.map(tx => renderNotification(tx, false))}
+            </>
+          )}
+        </ScrollArea>
+      </> {/* Close the fragment */}
+    </TooltipProvider>
+  );
+}

components/PasswordEntryForm.tsx

@@ -0,0 +1,95 @@
+'use client';
+
+import { toast } from '@/hooks/use-toast';
+import { User } from '@/lib/types';
+import { User as UserIcon } from 'lucide-react';
+import { useTranslations } from 'next-intl';
+import { useState } from 'react';
+import { Avatar, AvatarFallback, AvatarImage } from './ui/avatar';
+import { Button } from './ui/button';
+import { Input } from './ui/input';
+import { Label } from './ui/label';
+
+interface PasswordEntryFormProps {
+  user: User;
+  onCancel: () => void;
+  onSubmit: (password: string) => Promise<void>;
+  error?: string;
+}
+
+export default function PasswordEntryForm({ 
+  user, 
+  onCancel, 
+  onSubmit,
+  error 
+}: PasswordEntryFormProps) {
+  const t = useTranslations('PasswordEntryForm');
+  const hasPassword = !!user.password;
+  const [password, setPassword] = useState('');
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    try {
+      await onSubmit(password);
+    } catch (err) {
+      toast({
+        title: t('loginErrorToastTitle'),
+        description: err instanceof Error ? err.message : t('loginFailedErrorToastDescription'),
+        variant: "destructive"
+      });
+    }
+  };
+
+  return (
+    <form onSubmit={handleSubmit} className="space-y-6">
+      <div className="flex flex-col items-center gap-4 p-4 bg-muted/50 rounded-lg">
+        <Avatar className="h-24 w-24">
+          <AvatarImage 
+            src={user.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}`} 
+          />
+          <AvatarFallback>
+            <UserIcon className="h-12 w-12" />
+          </AvatarFallback>
+        </Avatar>
+        <div className="text-center">
+          <div className="font-medium text-lg">
+            {user.username}
+          </div>
+          <button 
+            type="button"
+            onClick={onCancel}
+            className="text-sm text-blue-500 hover:text-blue-600 mt-1"
+          >
+            {t('notYouButton')}
+          </button>
+        </div>
+      </div>
+
+      {hasPassword && <div className="space-y-4">
+        <div className="space-y-2">
+          <Label htmlFor="password">{t('passwordLabel')}</Label>
+          <Input
+            id="password"
+            type="password"
+            placeholder={t('passwordPlaceholder')}
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+            className={error ? 'border-red-500' : ''}
+          />
+          {error && (
+            <p className="text-sm text-red-500 bg-red-50 dark:bg-red-950/50 p-2 rounded">{error}</p>
+          )}
+        </div>
+      </div>}
+
+      <div className="flex justify-end gap-2 pt-2">
+        <Button type="button" variant="outline" onClick={onCancel}>
+          {t('cancelButton')}
+        </Button>
+        <Button type="submit" disabled={hasPassword && !password}>
+          {t('loginButton')}
+        </Button>
+      </div>
+    </form>
+  );
+}

components/PermissionError.tsx

@@ -0,0 +1,43 @@
+import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert'
+import { AlertTriangle } from 'lucide-react'
+import { checkStartupPermissions } from '@/lib/startup-checks'
+import RecheckButton from './RecheckButton'
+
+export default async function PermissionError() {
+  const permissionResult = await checkStartupPermissions()
+
+  // If everything is fine, render nothing
+  if (permissionResult.success) {
+    return <></>
+  }
+
+  // Get error message
+  const getErrorMessage = () => {
+    return permissionResult.error?.message || 'Unknown permission error occurred.'
+  }
+
+  return (
+    <Alert variant="destructive" className="mb-4">
+      <AlertTriangle className="h-4 w-4" />
+      <AlertTitle className="font-bold">Permission Error</AlertTitle>
+      <AlertDescription className="mt-2 flex flex-col">
+        <div className="space-y-3">
+          <span className="text-sm">
+            {getErrorMessage()}{" "}
+            <a
+              href="https://docs.habittrove.com/troubleshooting"
+              target="_blank"
+              rel="noopener noreferrer"
+              className="underline hover:text-red-300"
+            >
+              Troubleshooting Guide
+            </a>
+          </span>
+          <div>
+            <RecheckButton />
+          </div>
+        </div>
+      </AlertDescription>
+    </Alert>
+  )
+}

components/PermissionSelector.tsx

@@ -0,0 +1,110 @@
+'use client';
+
+import { Switch } from './ui/switch';
+import { Label } from './ui/label';
+import { Permission } from '@/lib/types';
+import { useTranslations } from 'next-intl';
+
+interface PermissionSelectorProps {
+  permissions: Permission[];
+  isAdmin: boolean;
+  onPermissionsChange: (permissions: Permission[]) => void;
+  onAdminChange: (isAdmin: boolean) => void;
+}
+
+export function PermissionSelector({
+  permissions,
+  isAdmin,
+  onPermissionsChange,
+  onAdminChange,
+}: PermissionSelectorProps) {
+  const t = useTranslations('PermissionSelector');
+
+  const permissionLabels: { [key: string]: string } = {
+    habit: t('resourceHabitTask'),
+    wishlist: t('resourceWishlist'),
+    coins: t('resourceCoins')
+  };
+
+  const currentPermissions = isAdmin ?
+    {
+      habit: { write: true, interact: true },
+      wishlist: { write: true, interact: true },
+      coins: { write: true, interact: true }
+    } :
+    permissions[0] || {
+      habit: { write: false, interact: true },
+      wishlist: { write: false, interact: true },
+      coins: { write: false, interact: true }
+    };
+
+  const handlePermissionChange = (resource: keyof Permission, type: 'write' | 'interact', checked: boolean) => {
+    const newPermissions = [{
+      ...currentPermissions,
+      [resource]: {
+        ...currentPermissions[resource],
+        [type]: checked
+      }
+    }];
+    onPermissionsChange(newPermissions);
+  };
+
+  return (
+    <div className="space-y-4">
+      <div className="space-y-2">
+        <Label>{t('permissionsTitle')}</Label>
+        <div className="grid grid-cols-1 gap-4">
+          <div className="flex items-center justify-between p-3 rounded-lg border bg-muted/50">
+            <div className="flex items-center gap-2">
+              <div className="font-medium text-sm">{t('adminAccessLabel')}</div>
+            </div>
+            <Switch
+              id="isAdmin"
+              className="h-4 w-7"
+              checked={isAdmin}
+              onCheckedChange={onAdminChange}
+            />
+          </div>
+
+          {isAdmin ? (
+            <p className="text-xs text-muted-foreground px-3">
+              {t('adminAccessDescription')}
+            </p>
+          ) : (
+            <div className="grid grid-cols-3 gap-4">
+              {['habit', 'wishlist', 'coins'].map((resource) => (
+                <div key={resource} className="p-3 space-y-3 rounded-lg border bg-muted/50">
+                  <div className="font-medium capitalize text-sm border-b pb-2">{permissionLabels[resource]}</div>
+                  <div className="flex flex-col gap-2.5">
+                    <div className="flex flex-col sm:flex-row items-start sm:items-center justify-between gap-2">
+                    <Label htmlFor={`${resource}-write`} className="text-xs text-muted-foreground break-words">{t('permissionWrite')}</Label>
+                      <Switch
+                        id={`${resource}-write`}
+                        className="h-4 w-7"
+                        checked={currentPermissions[resource as keyof Permission].write}
+                        onCheckedChange={(checked) =>
+                          handlePermissionChange(resource as keyof Permission, 'write', checked)
+                        }
+                      />
+                    </div>
+                    <div className="flex flex-col sm:flex-row items-start sm:items-center justify-between gap-2">
+                    <Label htmlFor={`${resource}-interact`} className="text-xs text-muted-foreground break-words">{t('permissionInteract')}</Label>
+                      <Switch
+                        id={`${resource}-interact`}
+                        className="h-4 w-7"
+                        checked={currentPermissions[resource as keyof Permission].interact}
+                        onCheckedChange={(checked) =>
+                          handlePermissionChange(resource as keyof Permission, 'interact', checked)
+                        }
+                      />
+                    </div>
+                  </div>
+                </div>
+              ))}
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  )
+}

components/PomodoroTimer.tsx

@@ -1,58 +1,43 @@
 'use client'
 
-import { useState, useEffect, useRef, useCallback } from 'react'
 import { Button } from '@/components/ui/button'
 import { Progress } from '@/components/ui/progress'
-import { Play, Pause, RotateCw, Minus, X, Clock, SkipForward } from 'lucide-react'
-import { cn, getCompletionsForToday } from '@/lib/utils'
-import { useAtom } from 'jotai'
-import { settingsAtom, pomodoroAtom, habitsAtom, pomodoroTodayCompletionsAtom } from '@/lib/atoms'
-import { getCompletionsForDate, getTodayInTimezone } from '@/lib/utils'
 import { useHabits } from '@/hooks/useHabits'
+import { habitsAtom, pomodoroAtom, pomodoroTodayCompletionsAtom } from '@/lib/atoms'
+import { cn } from '@/lib/utils'
+import { useAtom } from 'jotai'
+import { Clock, Minus, Pause, Play, RotateCw, SkipForward, X } from 'lucide-react'
+import { useTranslations } from 'next-intl'
+import { useEffect, useRef, useState } from 'react'
 
 interface PomoConfig {
-  labels: string[]
+  getLabels: () => string[]
   duration: number
   type: 'focus' | 'break'
 }
 
+export default function PomodoroTimer() {
+  const t = useTranslations('PomodoroTimer')
+
   const PomoConfigs: Record<PomoConfig['type'], PomoConfig> = {
     focus: {
-    labels: [
+      getLabels: () => [
-      'Stay Focused',
+        t('focusLabel1'), t('focusLabel2'), t('focusLabel3'), t('focusLabel4'), t('focusLabel5'),
-      'You Got This',
+        t('focusLabel6'), t('focusLabel7'), t('focusLabel8'), t('focusLabel9'), t('focusLabel10')
-      'Keep Going',
-      'Crush It',
-      'Make It Happen',
-      'Stay Strong',
-      'Push Through',
-      'One Step at a Time',
-      'You Can Do It',
-      'Focus and Conquer'
       ],
       duration: 25 * 60,
       type: 'focus',
     },
     break: {
-    labels: [
+      getLabels: () => [
-      'Take a Break',
+        t('breakLabel1'), t('breakLabel2'), t('breakLabel3'), t('breakLabel4'), t('breakLabel5'),
-      'Relax and Recharge',
+        t('breakLabel6'), t('breakLabel7'), t('breakLabel8'), t('breakLabel9'), t('breakLabel10')
-      'Breathe Deeply',
-      'Stretch It Out',
-      'Refresh Yourself',
-      'You Deserve This',
-      'Recharge Your Energy',
-      'Step Away for a Bit',
-      'Clear Your Mind',
-      'Rest and Rejuvenate'
       ],
       duration: 5 * 60,
       type: 'break',
     },
   }
 
-export default function PomodoroTimer() {
-  const [settings] = useAtom(settingsAtom)
   const [pomo, setPomo] = useAtom(pomodoroAtom)
   const { show, selectedHabitId, autoStart, minimized } = pomo
   const [habitsData] = useAtom(habitsAtom)
@@ -62,21 +47,23 @@ export default function PomodoroTimer() {
   const [state, setState] = useState<'started' | 'stopped' | 'paused'>(autoStart ? 'started' : 'stopped')
   const wakeLock = useRef<WakeLockSentinel | null>(null)
   const [todayCompletions] = useAtom(pomodoroTodayCompletionsAtom)
-  const currentTimer = useRef<PomoConfig>(PomoConfigs.focus)
+  const currentTimerRef = useRef<PomoConfig>(PomoConfigs.focus)
-  const [currentLabel, setCurrentLabel] = useState(
+  const [currentLabel, setCurrentLabel] = useState(() => {
-    currentTimer.current.labels[Math.floor(Math.random() * currentTimer.current.labels.length)]
+    const labels = currentTimerRef.current.getLabels();
-  )
+    return labels[Math.floor(Math.random() * labels.length)];
+  });
+
 
   // Handle wake lock
   useEffect(() => {
     const requestWakeLock = async () => {
       try {
         if (!('wakeLock' in navigator)) {
-          console.debug('Browser does not support wakelock')
+          console.debug(t('wakeLockNotSupported'))
           return
         }
         if (wakeLock.current && !wakeLock.current.released) {
-          console.debug('Wake lock already in use')
+          console.debug(t('wakeLockInUse'))
           return
         }
         if (state === 'started') {
@@ -85,7 +72,7 @@ export default function PomodoroTimer() {
           return
         }
       } catch (err) {
-        console.error('Error requesting wake lock:', err)
+        console.error(t('wakeLockRequestError'), err)
       }
     }
 
@@ -96,7 +83,7 @@ export default function PomodoroTimer() {
           wakeLock.current = null
         }
       } catch (err) {
-        console.error('Error releasing wake lock:', err)
+        console.error(t('wakeLockReleaseError'), err)
       }
     }
 
@@ -121,48 +108,48 @@ export default function PomodoroTimer() {
       document.removeEventListener('visibilitychange', handleVisibilityChange);
       releaseWakeLock()
     }
-  }, [state])
+  }, [state, t])
 
   // Timer logic
   useEffect(() => {
-    let interval: ReturnType<typeof setInterval> | null = null
+    const handleTimerEnd = async () => {
+      setState("stopped");
+      const currentTimerType = currentTimerRef.current.type;
+      currentTimerRef.current =
+        currentTimerType === "focus" ? PomoConfigs.break : PomoConfigs.focus;
+      setTimeLeft(currentTimerRef.current.duration);
+      const newLabels = currentTimerRef.current.getLabels();
+      setCurrentLabel(newLabels[Math.floor(Math.random() * newLabels.length)]);
 
-    if (state === 'started') {
+      // update habits only after focus sessions
+      if (selectedHabit && currentTimerType === "focus") {
+        await completeHabit(selectedHabit);
+        // The atom will automatically update with the new completions
+      }
+    };
+
+    let interval: ReturnType<typeof setInterval> | null = null;
+
+    if (state === "started") {
       // Calculate the target end time based on current timeLeft
-      const targetEndTime = Date.now() + timeLeft * 1000
+      const targetEndTime = Date.now() + timeLeft * 1000;
 
       interval = setInterval(() => {
-        const remaining = Math.floor((targetEndTime - Date.now()) / 1000)
+        const remaining = Math.floor((targetEndTime - Date.now()) / 1000);
 
         if (remaining <= 0) {
-          handleTimerEnd()
+          handleTimerEnd();
         } else {
-          setTimeLeft(remaining)
+          setTimeLeft(remaining);
         }
-      }, 1000)
+      }, 1000);
     }
 
     // return handles any other states
     return () => {
-      if (interval) clearInterval(interval)
+      if (interval) clearInterval(interval);
-    }
+    };
-  }, [state])
+  }, [state, timeLeft, PomoConfigs.break, PomoConfigs.focus, completeHabit, selectedHabit]);
-
-  const handleTimerEnd = async () => {
-    setState("stopped")
-    const currentTimerType = currentTimer.current.type
-    currentTimer.current = currentTimerType === 'focus' ? PomoConfigs.break : PomoConfigs.focus
-    setTimeLeft(currentTimer.current.duration)
-    setCurrentLabel(
-      currentTimer.current.labels[Math.floor(Math.random() * currentTimer.current.labels.length)]
-    )
-
-    // update habits only after focus sessions
-    if (selectedHabit && currentTimerType === 'focus') {
-      await completeHabit(selectedHabit)
-      // The atom will automatically update with the new completions
-    }
-  }
 
   const toggleTimer = () => {
     setState(prev => prev === 'started' ? 'paused' : 'started')
@@ -170,17 +157,16 @@ export default function PomodoroTimer() {
 
   const resetTimer = () => {
     setState("stopped")
-    setTimeLeft(currentTimer.current.duration)
+    setTimeLeft(currentTimerRef.current.duration)
   }
 
   const skipTimer = () => {
-    currentTimer.current = currentTimer.current.type === 'focus'
+    currentTimerRef.current = currentTimerRef.current.type === 'focus'
       ? PomoConfigs.break
       : PomoConfigs.focus
-    resetTimer()
+    resetTimer() // This will also reset timeLeft to the new timer's duration
-    setCurrentLabel(
+    const newLabels = currentTimerRef.current.getLabels();
-      currentTimer.current.labels[Math.floor(Math.random() * currentTimer.current.labels.length)]
+    setCurrentLabel(newLabels[Math.floor(Math.random() * newLabels.length)])
-    )
   }
 
   const formatTime = (seconds: number) => {
@@ -189,9 +175,9 @@ export default function PomodoroTimer() {
     return `${minutes}:${secs < 10 ? '0' : ''}${secs}`
   }
 
-  const progress = (timeLeft / currentTimer.current.duration) * 100
+  const progress = (timeLeft / currentTimerRef.current.duration) * 100
 
-  if (!show) return null
+  if (!show) return <></>
 
   return (
     <div className="fixed bottom-20 right-4 lg:bottom-4 bg-background border rounded-lg shadow-lg">
@@ -242,11 +228,11 @@ export default function PomodoroTimer() {
                     <div className={cn(
                       'w-2 h-2 rounded-full flex-none',
                       // order matters here
-                      currentTimer.current.type === 'focus' && 'bg-green-500',
+                      currentTimerRef.current.type === 'focus' && 'bg-green-500',
                       state === 'started' && 'animate-pulse',
                       state === 'paused' && 'bg-yellow-500',
                       state === 'stopped' && 'bg-red-500',
-                      currentTimer.current.type === 'break' && 'bg-blue-500',
+                      currentTimerRef.current.type === 'break' && 'bg-blue-500',
                     )} />
                     <div className="font-bold text-foreground">
                       {selectedHabit.name}
@@ -254,7 +240,9 @@ export default function PomodoroTimer() {
                   </div>
                 </div>
               )}
-              <span>{currentTimer.current.type.charAt(0).toUpperCase() + currentTimer.current.type.slice(1)}: {currentLabel}</span>
+              <span>
+                {currentTimerRef.current.type === 'focus' ? t('focusType') : t('breakType')}: {currentLabel}
+              </span>
               {selectedHabit && selectedHabit.targetCompletions && selectedHabit.targetCompletions > 1 && (
                 <div className="flex justify-center gap-1 mt-2">
                   {(() => {
@@ -293,12 +281,12 @@ export default function PomodoroTimer() {
                 {state === "started" ? (
                   <>
                     <Pause className="h-4 w-4 sm:mr-2" />
-                    <span className="hidden sm:inline">Pause</span>
+                    <span className="hidden sm:inline">{t('pauseButton')}</span>
                   </>
                 ) : (
                   <>
                     <Play className="h-4 w-4 sm:mr-2" />
-                    <span className="hidden sm:inline">Start</span>
+                    <span className="hidden sm:inline">{t('startButton')}</span>
                   </>
                 )}
               </Button>
@@ -309,7 +297,7 @@ export default function PomodoroTimer() {
                 className="sm:px-4"
               >
                 <RotateCw className="h-4 w-4 sm:mr-2" />
-                <span className="hidden sm:inline">Reset</span>
+                <span className="hidden sm:inline">{t('resetButton')}</span>
               </Button>
               <Button
                 variant="outline"
@@ -318,7 +306,7 @@ export default function PomodoroTimer() {
                 className="sm:px-4"
               >
                 <SkipForward className="h-4 w-4 sm:mr-2" />
-                <span className="hidden sm:inline">Skip</span>
+                <span className="hidden sm:inline">{t('skipButton')}</span>
               </Button>
             </div>
           </div>

components/Profile.tsx

@@ -1,28 +1,54 @@
 'use client'
 
+import { signOut } from "@/app/actions/user"
 import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"
 import { Button } from "@/components/ui/button"
 import { DropdownMenu, DropdownMenuContent, DropdownMenuItem, DropdownMenuTrigger } from "@/components/ui/dropdown-menu"
-import { Settings, Info, User, Moon, Sun, Palette } from "lucide-react"
+import { toast } from "@/hooks/use-toast"
-import Link from "next/link"
+import { aboutOpenAtom, currentUserAtom, settingsAtom, userSelectAtom } from "@/lib/atoms"
 import { useAtom } from "jotai"
-import { settingsAtom } from "@/lib/atoms"
+import { ArrowRightLeft, Crown, Info, LogOut, Moon, Palette, Settings, Sun, User } from "lucide-react"
-import AboutModal from "./AboutModal"
+import { useTranslations } from 'next-intl'
-import { useState } from "react"
 import { useTheme } from "next-themes"
+import Link from "next/link"
+import { useState } from "react"
+import { Dialog, DialogContent, DialogHeader, DialogTitle } from './ui/dialog'
+import UserForm from './UserForm'
 
 export function Profile() {
+  const t = useTranslations('Profile');
   const [settings] = useAtom(settingsAtom)
-  const [showAbout, setShowAbout] = useState(false)
+  const [userSelect, setUserSelect] = useAtom(userSelectAtom)
+  const [isEditing, setIsEditing] = useState(false)
+  const [aboutOpen, setAboutOpen] = useAtom(aboutOpenAtom)
   const { theme, setTheme } = useTheme()
+  const [user] = useAtom(currentUserAtom)
+  const [open, setOpen] = useState(false)
+
+  const handleSignOut = async () => {
+    try {
+      await signOut()
+      toast({
+        title: t('signOutSuccessTitle'),
+        description: t('signOutSuccessDescription'),
+      })
+      setTimeout(() => window.location.reload(), 300);
+    } catch (error) {
+      toast({
+        title: t('signOutErrorTitle'),
+        description: t('signOutErrorDescription'),
+        variant: "destructive",
+      })
+    }
+  }
 
   return (
     <>
-      <DropdownMenu>
+      <DropdownMenu open={open} onOpenChange={setOpen}>
         <DropdownMenuTrigger asChild>
           <Button variant="ghost" className="flex items-center gap-2">
             <Avatar className="h-8 w-8">
-              <AvatarImage src={settings?.profile?.avatarPath ? `/api/avatars/${settings.profile.avatarPath.split('/').pop()}` : '/avatars/default.png'} />
+              <AvatarImage src={user?.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}` || ""} />
               <AvatarFallback>
                 <User className="h-4 w-4" />
               </AvatarFallback>
@@ -30,33 +56,94 @@ export function Profile() {
           </Button>
         </DropdownMenuTrigger>
         <DropdownMenuContent align="end" className="w-[200px] p-2">
+          <div className="px-2 py-1.5 mb-2 border-b">
+            <div className="flex items-center gap-2">
+              <Avatar className="h-8 w-8">
+                <AvatarImage src={user?.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}` || ""} />
+                <AvatarFallback>
+                  <User className="h-4 w-4" />
+                </AvatarFallback>
+              </Avatar>
+              <div className="flex flex-col mr-4">
+                <span className="text-sm font-semibold flex items-center gap-1 break-all">
+                  {user?.username || t('guestUsername')}
+                  {user?.isAdmin && <Crown className="h-3 w-3 text-yellow-500" />}
+                </span>
+                {user && (
+                  <button
+                    onClick={(e) => {
+                      e.stopPropagation();
+                      setOpen(false);
+                      setIsEditing(true);
+                    }}
+                    className="text-xs text-muted-foreground hover:text-primary transition-colors text-left"
+                  >
+                    {t('editProfileButton')}
+                  </button>
+                )}
+              </div>
+              {user && (
+                <button
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    setOpen(false);
+                    handleSignOut();
+                  }}
+                  className="border border-primary/50 text-primary rounded-md p-1.5 transition-colors hover:bg-primary/10 hover:border-primary active:scale-95"
+                >
+                  <LogOut className="h-4 w-4" />
+                </button>
+              )}
+            </div>
+          </div>
+
+          <DropdownMenuItem className="cursor-pointer px-2 py-1.5" onClick={() => {
+            setOpen(false);  // Close the dropdown
+            setUserSelect(true);  // Open the user select modal
+          }}>
+            <div className="flex items-center justify-between w-full">
+              <div className="flex items-center gap-2">
+                <ArrowRightLeft className="h-4 w-4" />
+                <span>{t('switchUserButton')}</span>
+              </div>
+            </div>
+          </DropdownMenuItem>
           <DropdownMenuItem className="cursor-pointer px-2 py-1.5" asChild>
+            {/* need the Link element to be the direct child of the DropdownMenuItem, since we are using asChild here */}
             <Link
               href="/settings"
-              aria-label='settings'
+              aria-label={t('settingsLink')}
-              className="flex items-center w-full gap-3"
+              className="flex items-center justify-between w-full"
+              onClick={() => setOpen(false)} // Ensure dropdown closes on click
             >
+              <div className="flex items-center gap-2">
                 <Settings className="h-4 w-4" />
-              <span>Settings</span>
+                <span>{t('settingsLink')}</span>
+              </div>
             </Link>
           </DropdownMenuItem>
-          <DropdownMenuItem className="cursor-pointer px-2 py-1.5" asChild>
+          <DropdownMenuItem className="cursor-pointer px-2 py-1.5" onClick={() => {
-            <button
+            setOpen(false);  // Close the dropdown
-              onClick={() => setShowAbout(true)}
+            setAboutOpen(true);  // Open the about modal
-              className="flex items-center w-full gap-3"
+          }}>
-            >
+            <div className="flex items-center justify-between w-full">
+              <div className="flex items-center gap-2">
                 <Info className="h-4 w-4" />
-              <span>About</span>
+                <span>{t('aboutButton')}</span>
-            </button>
+              </div>
+            </div>
           </DropdownMenuItem>
           <DropdownMenuItem className="cursor-pointer px-2 py-1.5">
-            <div className="flex items-center justify-between w-full gap-3">
+            <div className="flex items-center justify-between w-full">
-              <div className="flex items-center gap-3">
+              <div className="flex items-center gap-2">
                 <Palette className="h-4 w-4" />
-                <span>Theme</span>
+                <span>{t('themeLabel')}</span>
               </div>
               <button
-                onClick={() => setTheme(theme === 'dark' ? 'light' : 'dark')}
+                onClick={(e) => {
+                  e.stopPropagation();
+                  setTheme(theme === 'dark' ? 'light' : 'dark');
+                }}
                 className={`
                   w-12 h-6 rounded-full relative transition-all duration-300 ease-in-out
                   hover:scale-105 shadow-inner
@@ -86,7 +173,24 @@ export function Profile() {
         </DropdownMenuContent>
       </DropdownMenu>
 
-      <AboutModal isOpen={showAbout} onClose={() => setShowAbout(false)} />
+      {/* Add the UserForm dialog */}
+      {isEditing && user && (
+        <Dialog open={isEditing} onOpenChange={() => setIsEditing(false)}>
+          <DialogContent className="sm:max-w-md">
+            <DialogHeader>
+              <DialogTitle>{t('editProfileModalTitle')}</DialogTitle>
+            </DialogHeader>
+            <UserForm
+              userId={user.id}
+              onCancel={() => setIsEditing(false)}
+              onSuccess={() => {
+                setIsEditing(false);
+                window.location.reload();
+              }}
+            />
+          </DialogContent>
+        </Dialog>
+      )}
     </>
   )
 }

components/RecheckButton.tsx

@@ -0,0 +1,22 @@
+'use client'
+
+import { Button } from '@/components/ui/button'
+import { RefreshCw } from 'lucide-react'
+
+export default function RecheckButton() {
+  const handleRecheck = () => {
+    window.location.reload()
+  }
+
+  return (
+    <Button 
+      onClick={handleRecheck}
+      variant="outline" 
+      size="sm"
+      className="bg-red-50 border-red-300 text-red-700 hover:bg-red-100"
+    >
+      <RefreshCw className="h-4 w-4 mr-2" />
+      Recheck
+    </Button>
+  )
+}

components/RefreshBanner.tsx

@@ -0,0 +1,27 @@
+'use client'
+
+import { Button } from "@/components/ui/button"
+import { AlertTriangle } from "lucide-react"
+
+interface RefreshBannerProps {
+  onRefresh: () => void;
+}
+
+export default function RefreshBanner({ onRefresh }: RefreshBannerProps) {
+  return (
+    <div className="fixed bottom-4 right-4 z-[100] bg-yellow-400 dark:bg-yellow-500 text-black dark:text-gray-900 p-4 rounded-lg shadow-lg flex items-center gap-3">
+      <AlertTriangle className="h-6 w-6 text-yellow-800 dark:text-yellow-900" />
+      <div>
+        <p className="font-semibold">Data out of sync</p>
+        <p className="text-sm">New data is available. Please refresh to see the latest updates.</p>
+      </div>
+      <Button
+        onClick={onRefresh}
+        variant="outline"
+        className="ml-auto bg-yellow-500 hover:bg-yellow-600 dark:bg-yellow-600 dark:hover:bg-yellow-700 border-yellow-600 dark:border-yellow-700 text-white dark:text-gray-900"
+      >
+        Refresh
+      </Button>
+    </div>
+  )
+}

components/TodayEarnedCoins.tsx

@@ -1,20 +1,22 @@
 import { useAtom } from 'jotai'
+import { useTranslations } from 'next-intl'
 import { settingsAtom } from '@/lib/atoms'
 import { useCoins } from '@/hooks/useCoins'
 import { FormattedNumber } from '@/components/FormattedNumber'
 
 export default function TodayEarnedCoins({ longFormat }: { longFormat?: boolean }) {
+  const t = useTranslations('TodayEarnedCoins')
   const [settings] = useAtom(settingsAtom)
   const { coinsEarnedToday } = useCoins()
 
-  if (coinsEarnedToday <= 0) return null
+  if (coinsEarnedToday <= 0) return <></>;
 
   return (
     <span className="text-md text-green-600 dark:text-green-400 font-medium mt-1">
       {"+"}
       <FormattedNumber amount={coinsEarnedToday} settings={settings} />
       {longFormat ?
-        <span className="text-sm text-muted-foreground"> today</span>
+        <span className="text-sm text-muted-foreground"> {t('todaySuffix')}</span>
         : null}
     </span>
   )

components/TransactionNoteEditor.tsx

@@ -5,6 +5,7 @@ import { Input } from '@/components/ui/input'
 import { Button } from '@/components/ui/button'
 import { Check, Loader2, Pencil, Trash2, X } from 'lucide-react'
 import { toast } from '@/hooks/use-toast'
+import { useTranslations } from 'next-intl'
 
 interface TransactionNoteEditorProps {
   transactionId: string
@@ -19,6 +20,7 @@ export function TransactionNoteEditor({
   onSave,
   onDelete
 }: TransactionNoteEditorProps) {
+  const t = useTranslations('TransactionNoteEditor');
   const [isEditing, setIsEditing] = useState(false)
   const [noteText, setNoteText] = useState(initialNote)
   const [isSaving, setIsSaving] = useState(false)
@@ -27,8 +29,8 @@ export function TransactionNoteEditor({
     const trimmedNote = noteText.trim()
     if (trimmedNote.length > 200) {
       toast({
-        title: 'Note too long',
+        title: t('noteTooLongTitle'),
-        description: 'Notes must be less than 200 characters',
+        description: t('noteTooLongDescription'),
         variant: 'destructive'
       })
       return
@@ -40,8 +42,8 @@ export function TransactionNoteEditor({
       setIsEditing(false)
     } catch (error) {
       toast({
-        title: 'Error saving note',
+        title: t('errorSavingNoteTitle'),
-        description: 'Please try again',
+        description: t('pleaseTryAgainDescription'),
         variant: 'destructive'
       })
       // Revert to initial value on error
@@ -59,8 +61,8 @@ export function TransactionNoteEditor({
       setIsEditing(false)
     } catch (error) {
       toast({
-        title: 'Error deleting note',
+        title: t('errorDeletingNoteTitle'),
-        description: 'Please try again',
+        description: t('pleaseTryAgainDescription'),
         variant: 'destructive'
       })
     } finally {
@@ -74,7 +76,7 @@ export function TransactionNoteEditor({
         <Input
           value={noteText}
           onChange={(e) => setNoteText(e.target.value)}
-          placeholder="Add a note..."
+          placeholder={t('addNotePlaceholder')}
           className="w-64"
           maxLength={200}
         />
@@ -85,7 +87,7 @@ export function TransactionNoteEditor({
             onClick={handleSave}
             disabled={isSaving}
             className="text-green-600 dark:text-green-500 hover:text-green-700 dark:hover:text-green-400 transition-colors"
-            title="Save note"
+            title={t('saveNoteTitle')}
           >
             {isSaving ? <Loader2 className="h-4 w-4 animate-spin" /> : <Check className="h-4 w-4" />}
           </Button>
@@ -98,7 +100,7 @@ export function TransactionNoteEditor({
             }}
             disabled={isSaving}
             className="text-red-600 dark:text-red-500 hover:text-red-700 dark:hover:text-red-400 transition-colors"
-            title="Cancel"
+            title={t('cancelButtonTitle')}
           >
             <X className="h-4 w-4" />
           </Button>
@@ -109,7 +111,7 @@ export function TransactionNoteEditor({
               onClick={handleDelete}
               disabled={isSaving}
               className="text-gray-600 dark:text-gray-500 hover:text-gray-700 dark:hover:text-gray-400 transition-colors"
-              title="Delete note"
+              title={t('deleteNoteTitle')}
             >
               {isSaving ? <Loader2 className="h-4 w-4 animate-spin" /> : <Trash2 className="h-4 w-4" />}
             </Button>
@@ -129,7 +131,7 @@ export function TransactionNoteEditor({
       <button
         onClick={() => setIsEditing(true)}
         className="text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200"
-        aria-label="Edit note"
+        aria-label={t('editNoteAriaLabel')}
       >
         <Pencil className="h-4 w-4" />
       </button>

components/UserForm.tsx

@@ -0,0 +1,396 @@
+'use client';
+
+import { createUser, updateUser, updateUserPassword, uploadAvatar } from '@/app/actions/data';
+import {
+  AlertDialog,
+  AlertDialogAction,
+  AlertDialogCancel,
+  AlertDialogContent,
+  AlertDialogDescription,
+  AlertDialogFooter,
+  AlertDialogHeader,
+  AlertDialogTitle,
+  AlertDialogTrigger,
+} from "@/components/ui/alert-dialog";
+import { toast } from '@/hooks/use-toast';
+import { currentUserAtom, serverSettingsAtom, usersAtom } from '@/lib/atoms';
+import { Permission } from '@/lib/types';
+import { passwordSchema, usernameSchema } from '@/lib/zod';
+import { useAtom, useAtomValue } from 'jotai';
+import _ from 'lodash';
+import { User as UserIcon } from 'lucide-react';
+import { useTranslations } from 'next-intl';
+import { useState } from 'react';
+import { PermissionSelector } from './PermissionSelector';
+import { Avatar, AvatarFallback, AvatarImage } from './ui/avatar';
+import { Button } from './ui/button';
+import { Input } from './ui/input';
+import { Label } from './ui/label';
+import { Switch } from './ui/switch';
+
+
+interface UserFormProps {
+  userId?: string;  // if provided, we're editing; if not, we're creating
+  onCancel: () => void;
+  onSuccess: () => void;
+}
+
+export default function UserForm({ userId, onCancel, onSuccess }: UserFormProps) {
+  const t = useTranslations('UserForm');
+  const [users, setUsersData] = useAtom(usersAtom);
+  const serverSettings = useAtomValue(serverSettingsAtom)
+  const user = userId ? users.users.find(u => u.id === userId) : undefined;
+  const [currentUser] = useAtom(currentUserAtom)
+  const getDefaultPermissions = (): Permission[] => [{
+    habit: {
+      write: true,
+      interact: true
+    },
+    wishlist: {
+      write: true,
+      interact: true
+    },
+    coins: {
+      write: true,
+      interact: true
+    }
+  }];
+
+  const [avatarPath, setAvatarPath] = useState(user?.avatarPath)
+  const [username, setUsername] = useState(user?.username || '');
+  const [password, setPassword] = useState<string | undefined>('');
+  const [disablePassword, setDisablePassword] = useState(user?.password === '' || serverSettings.isDemo);
+  const [error, setError] = useState('');
+  const [avatarFile, setAvatarFile] = useState<File | null>(null);
+  const [isAdmin, setIsAdmin] = useState(user?.isAdmin || false);
+  const [permissions, setPermissions] = useState<Permission[]>(
+    user?.permissions || getDefaultPermissions()
+  );
+  const isEditing = !!user;
+
+  const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
+  const [isDeleting, setIsDeleting] = useState(false);
+
+  const handleDeleteUser = async () => {
+    if (!user) return;
+
+    if (serverSettings.isDemo) {
+      toast({
+        title: t('errorTitle'),
+        description: t('toastDemoDeleteDisabled'),
+        variant: 'destructive',
+      });
+      return;
+    }
+
+    if (currentUser && currentUser.id === user.id) {
+      toast({
+        title: t('errorTitle'),
+        description: t('toastCannotDeleteSelf'),
+        variant: 'destructive',
+      });
+      return;
+    }
+
+    setIsDeleting(true);
+    try {
+      const response = await fetch('/api/user/delete', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ userId: user.id }),
+      });
+
+      if (response.ok) {
+        setUsersData(prev => ({
+          ...prev,
+          users: prev.users.filter(u => u.id !== user.id),
+        }));
+        toast({
+          title: t('toastUserDeletedTitle'),
+          description: t('toastUserDeletedDescription', { username: user.username }),
+          variant: 'default'
+        });
+        onSuccess();
+      } else {
+        const errorData = await response.json();
+        toast({
+          title: t('errorTitle'),
+          description: errorData.error || t('genericError'),
+          variant: 'destructive',
+        });
+      }
+    } catch (error) {
+      toast({
+        title: t('errorTitle'),
+        description: t('networkError'),
+        variant: 'destructive',
+      });
+    } finally {
+      setIsDeleting(false);
+      setShowDeleteConfirm(false);
+    }
+  };
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+
+    try {
+      // Validate username
+      const usernameResult = usernameSchema.safeParse(username);
+      if (!usernameResult.success) {
+        setError(usernameResult.error.errors[0].message);
+        return;
+      }
+
+      // Validate password unless disabled
+      if (!disablePassword && password) {
+        const passwordResult = passwordSchema.safeParse(password);
+        if (!passwordResult.success) {
+          setError(passwordResult.error.errors[0].message);
+          return;
+        }
+      }
+
+      if (isEditing) {
+        // Update existing user
+        if (username !== user.username || avatarPath !== user.avatarPath || !_.isEqual(permissions, user.permissions) || isAdmin !== user.isAdmin) {
+          await updateUser(user.id, { username, avatarPath, permissions, isAdmin });
+        }
+
+        // Handle password update
+        if (disablePassword) {
+          await updateUserPassword(user.id, undefined);
+        } else if (password) {
+          await updateUserPassword(user.id, password);
+        }
+
+        setUsersData(prev => ({
+          ...prev,
+          users: prev.users.map(u =>
+            u.id === user.id ? {
+              ...u,
+              username,
+              avatarPath,
+              permissions,
+              isAdmin,
+              password: disablePassword ? '' : (password || u.password) // use the correct password to update atom
+            } : u
+          ),
+        }));
+
+        toast({
+          title: t('toastUserUpdatedTitle'),
+          description: t('toastUserUpdatedDescription', { username }),
+          variant: 'default'
+        });
+      } else {
+        // Create new user
+        const formData = new FormData();
+        formData.append('username', username);
+        if (disablePassword) {
+          formData.append('password', '');
+        } else if (password) {
+          formData.append('password', password);
+        }
+        formData.append('permissions', JSON.stringify(isAdmin ? undefined : permissions));
+        formData.append('isAdmin', JSON.stringify(isAdmin));
+        formData.append('avatarPath', avatarPath || '');
+
+        const newUser = await createUser(formData);
+        setUsersData(prev => ({
+          ...prev,
+          users: [...prev.users, newUser]
+        }));
+
+        toast({
+          title: t('toastUserCreatedTitle'),
+          description: t('toastUserCreatedDescription', { username }),
+          variant: 'default'
+        });
+      }
+
+      setPassword('');
+      setError('');
+      onSuccess();
+    } catch (err) {
+      const action = isEditing ? t('actionUpdate') : t('actionCreate');
+      setError(err instanceof Error ? err.message : t('errorFailedUserAction', { action }));
+    }
+  };
+
+  const handleAvatarChange = async (file: File) => {
+    if (file.size > 5 * 1024 * 1024) { // 5MB
+      toast({
+        title: t('errorTitle'),
+        description: t('errorFileSizeLimit'),
+        variant: 'destructive'
+      });
+      return;
+    }
+
+    const formData = new FormData();
+    formData.append('avatar', file);
+
+    try {
+      const path = await uploadAvatar(formData);
+      setAvatarPath(path);
+      setAvatarFile(null); // Clear the file since we've uploaded it
+      toast({
+        title: t('toastAvatarUploadedTitle'),
+        description: t('toastAvatarUploadedDescription'),
+        variant: 'default'
+      });
+    } catch (err) {
+      toast({
+        title: t('errorTitle'),
+        description: t('errorFailedAvatarUpload'),
+        variant: 'destructive'
+      });
+    }
+  };
+
+  return (
+    <form onSubmit={handleSubmit} className="space-y-6 max-h-[80vh] overflow-y-auto p-4">
+      <div className="flex flex-col items-center gap-4 p-4 bg-muted/50 rounded-lg">
+        <Avatar className="h-24 w-24">
+          <AvatarImage
+            src={avatarPath && `/api/avatars/${avatarPath.split('/').pop()}`}
+            alt={username}
+          />
+          <AvatarFallback>
+            <UserIcon className="h-12 w-12" />
+          </AvatarFallback>
+        </Avatar>
+        <div>
+          <input
+            type="file"
+            id="avatar"
+            name="avatar"
+            accept="image/png, image/jpeg"
+            className="hidden"
+            onChange={(e) => {
+              const file = e.target.files?.[0];
+              if (file) {
+                handleAvatarChange(file);
+              }
+            }}
+          />
+          <Button
+            type="button"
+            variant="secondary"
+            onClick={() => {
+              const input = document.getElementById('avatar') as HTMLInputElement;
+              input.value = ''; // Reset input to allow selecting same file again
+              input.click();
+            }}
+            className="w-full"
+          >
+            {isEditing ? t('changeAvatarButton') : t('uploadAvatarButton')}
+          </Button>
+        </div>
+      </div>
+
+      <div className="space-y-4">
+        <div className="space-y-2">
+          <Label htmlFor="username">{t('usernameLabel')}</Label>
+          <Input
+            id="username"
+            type="text"
+            placeholder={t('usernamePlaceholder')}
+            value={username}
+            onChange={(e) => setUsername(e.target.value)}
+            className={error ? 'border-red-500' : ''}
+          />
+        </div>
+
+        <div className="space-y-4">
+          <div className="space-y-2">
+            <Label htmlFor="password">
+              {isEditing ? t('newPasswordLabel') : t('passwordLabel')}
+            </Label>
+            <Input
+              id="password"
+              type="password"
+              placeholder={isEditing ? t('passwordPlaceholderEdit') : t('passwordPlaceholderCreate')}
+              value={password || ''}
+              onChange={(e) => setPassword(e.target.value)}
+              className={error ? 'border-red-500' : ''}
+              disabled={disablePassword}
+            />
+            {serverSettings.isDemo && (
+              <p className="text-sm text-red-500">{t('demoPasswordDisabledMessage')}</p>
+            )}
+          </div>
+
+          <div className="flex items-center space-x-2">
+            <Switch
+              id="disable-password"
+              checked={disablePassword}
+              onCheckedChange={setDisablePassword}
+              disabled={serverSettings.isDemo}
+            />
+            <Label htmlFor="disable-password">{t('disablePasswordLabel')}</Label>
+          </div>
+        </div>
+
+        {error && (
+          <p className="text-sm text-red-500 bg-red-50 dark:bg-red-950/50 p-2 rounded">{error}</p>
+        )}
+
+
+        {currentUser && currentUser.isAdmin && <PermissionSelector
+          permissions={permissions}
+          isAdmin={isAdmin}
+          onPermissionsChange={setPermissions}
+          onAdminChange={setIsAdmin}
+        />}
+
+      </div>
+
+      <div className="flex justify-end gap-2 pt-2">
+        {isEditing && (
+          <AlertDialog open={showDeleteConfirm} onOpenChange={setShowDeleteConfirm}>
+            <AlertDialogTrigger asChild>
+              <Button
+                type="button"
+                variant="destructive"
+                className="mr-auto"
+                disabled={serverSettings.isDemo || isDeleting}
+              >
+                {isDeleting ? t('deletingButtonText') : t('deleteAccountButton')}
+              </Button>
+            </AlertDialogTrigger>
+            <AlertDialogContent>
+              <AlertDialogHeader>
+                <AlertDialogTitle>{t('areYouSure')}</AlertDialogTitle>
+                <AlertDialogDescription>
+                  {t('deleteUserConfirmation', { username: user.username })}
+                </AlertDialogDescription>
+              </AlertDialogHeader>
+              <AlertDialogFooter>
+                <AlertDialogCancel disabled={isDeleting}>{t('cancel')}</AlertDialogCancel>
+                <AlertDialogAction
+                  onClick={handleDeleteUser}
+                  disabled={isDeleting}
+                  className="bg-destructive text-destructive-foreground hover:bg-destructive/90"
+                >
+                  {isDeleting ? t('deletingButtonText') : t('confirmDeleteButtonText')}
+                </AlertDialogAction>
+              </AlertDialogFooter>
+            </AlertDialogContent>
+          </AlertDialog>
+        )}
+        <Button
+          type="button"
+          variant="outline"
+          onClick={onCancel}
+        >
+          {t('cancelButton')}
+        </Button>
+        <Button type="submit" disabled={!username}>
+          {isEditing ? t('saveChangesButton') : t('createUserButton')}
+        </Button>
+      </div>
+    </form>
+  );
+}

components/UserSelectModal.tsx

@@ -0,0 +1,222 @@
+'use client';
+
+import { signIn } from '@/app/actions/user';
+import { toast } from '@/hooks/use-toast';
+import { currentUserAtom, usersAtom } from '@/lib/atoms';
+import { SafeUser, User } from '@/lib/types';
+import { cn } from '@/lib/utils';
+import { Description } from '@radix-ui/react-dialog';
+import { useAtom } from 'jotai';
+import { Crown, Plus, User as UserIcon, UserRoundPen } from 'lucide-react';
+import { useTranslations } from 'next-intl';
+import { useState } from 'react';
+import PasswordEntryForm from './PasswordEntryForm';
+import UserForm from './UserForm';
+import { Avatar, AvatarFallback, AvatarImage } from './ui/avatar';
+import { Dialog, DialogContent, DialogHeader, DialogTitle } from './ui/dialog';
+
+
+
+function UserCard({
+  user,
+  onSelect,
+  onEdit,
+  showEdit,
+  isCurrentUser,
+}: {
+  user: User,
+  onSelect: () => void,
+  onEdit: () => void,
+  showEdit: boolean,
+  isCurrentUser: boolean,
+}) {
+  const t = useTranslations('UserSelectModal');
+
+  return (
+    <div key={user.id} className="relative group">
+      <button
+        onClick={onSelect}
+        className={cn(
+          "flex flex-col items-center gap-2 p-2 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-800 transition-colors w-full",
+          isCurrentUser && "ring-2 ring-primary"
+        )}
+      >
+        <Avatar className="h-16 w-16">
+          <AvatarImage
+            src={user.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}`}
+            alt={user.username}
+          />
+          <AvatarFallback>
+            <UserIcon className="h-8 w-8" />
+          </AvatarFallback>
+        </Avatar>
+        <span className="text-sm font-medium flex items-center gap-1">
+          {user.username}
+          {user.isAdmin && <Crown className="h-4 w-4 text-yellow-500" />}
+        </span>
+      </button>
+      {showEdit && (
+        <div className="absolute top-0 right-0 flex space-x-1">
+          {showEdit && (
+            <button
+              onClick={(e) => {
+                e.stopPropagation(); // Prevent card selection
+                onEdit();
+              }}
+              className="p-1 rounded-full bg-gray-200 hover:bg-gray-300 dark:bg-gray-700 dark:hover:bg-gray-600 transition-colors"
+              title={t('editUserTooltip')}
+            >
+              <UserRoundPen className="h-4 w-4" />
+            </button>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}
+
+function AddUserButton({ onClick }: { onClick: () => void }) {
+  const t = useTranslations('UserSelectModal');
+  return (
+    <button
+      onClick={onClick}
+      className="flex flex-col items-center gap-2 p-2 rounded-lg hover:bg-gray-100 dark:hover:bg-gray-800 transition-colors"
+    >
+      <Avatar className="h-16 w-16">
+        <AvatarFallback>
+          <Plus className="h-8 w-8" />
+        </AvatarFallback>
+      </Avatar>
+      <span className="text-sm font-medium">{t('addUserButton')}</span>
+    </button>
+  );
+}
+
+function UserSelectionView({
+  users,
+  currentUserFromHook, // Renamed to avoid confusion with map variable
+  onUserSelect,
+  onEditUser,
+  onCreateUser,
+}: {
+  users: User[],
+  currentUserFromHook?: SafeUser,
+  onUserSelect: (userId: string) => void,
+  onEditUser: (userId: string) => void,
+  onCreateUser: () => void,
+}) {
+  return (
+    <div className="grid grid-cols-3 gap-4 p-2 max-h-80 overflow-y-auto">
+      {users
+        .filter(user => user.id !== currentUserFromHook?.id) // Show other users
+        .map((user) => (
+          <UserCard
+            key={user.id}
+            user={user}
+            onSelect={() => onUserSelect(user.id)}
+            onEdit={() => onEditUser(user.id)}
+            showEdit={!!currentUserFromHook?.isAdmin}
+            isCurrentUser={false} // This card isn't the currently logged-in user for switching TO
+          />
+        ))}
+      {currentUserFromHook?.isAdmin && <AddUserButton onClick={onCreateUser} />}
+    </div>
+  );
+}
+
+export default function UserSelectModal({ onClose }: { onClose: () => void }) {
+  const t = useTranslations('UserSelectModal');
+  const [selectedUser, setSelectedUser] = useState<string>();
+  const [isCreating, setIsCreating] = useState(false);
+  const [isEditing, setIsEditing] = useState(false);
+  const [error, setError] = useState('');
+  const [usersData, setUsersData] = useAtom(usersAtom);
+  const users = usersData.users;
+  const [currentUser] = useAtom(currentUserAtom);
+
+
+  const handleUserSelect = (userId: string) => {
+    setSelectedUser(userId);
+    setError('');
+  };
+
+  const handleEditUser = (userId: string) => {
+    setSelectedUser(userId);
+    setIsEditing(true);
+  };
+
+  const handleCreateUser = () => {
+    setIsCreating(true);
+  };
+
+  const handleFormSuccess = () => {
+    setSelectedUser(undefined);
+    setIsCreating(false);
+    setIsEditing(false);
+    onClose();
+  };
+
+  const handleFormCancel = () => {
+    setSelectedUser(undefined);
+    setIsCreating(false);
+    setIsEditing(false);
+    setError('');
+  };
+
+  return (
+    <Dialog open={true} onOpenChange={onClose}>
+      <DialogContent className="sm:max-w-md">
+        <Description></Description>
+        <DialogHeader>
+          <DialogTitle>{isCreating ? t('createNewUserTitle') : t('selectUserTitle')}</DialogTitle>
+        </DialogHeader>
+
+        <div className="flex flex-col gap-4">
+          {!selectedUser && !isCreating && !isEditing ? (
+            <UserSelectionView
+              users={users}
+              currentUserFromHook={currentUser}
+              onUserSelect={handleUserSelect}
+              onEditUser={handleEditUser}
+              onCreateUser={handleCreateUser}
+            />
+          ) : isCreating || isEditing ? (
+            <UserForm
+              userId={isEditing ? selectedUser : undefined}
+              onCancel={handleFormCancel}
+              onSuccess={handleFormSuccess}
+            />
+          ) : (
+            <PasswordEntryForm
+              user={users.find(u => u.id === selectedUser)!}
+              onCancel={() => setSelectedUser(undefined)}
+              onSubmit={async (password) => {
+                try {
+                  setError('');
+                  const user = users.find(u => u.id === selectedUser);
+                  if (!user) throw new Error("User not found");
+                  await signIn(user.username, password);
+
+                  setError('');
+                  onClose();
+
+                  toast({
+                    title: t('signInSuccessTitle'),
+                    description: t('signInSuccessDescription', { username: user.username }),
+                    variant: "default"
+                  });
+
+                  setTimeout(() => window.location.reload(), 300);
+                } catch (err) {
+                  setError(t('errorInvalidPassword'));
+                  throw err;
+                }
+              }}
+              error={error}
+            />
+          )}
+        </div>
+      </DialogContent>
+    </Dialog>
+  );
+}

components/ViewToggle.tsx

@@ -1,74 +1,70 @@
 'use client'
 
-import { cn } from '@/lib/utils'
-import { useAtom } from 'jotai'
-import { CheckSquare, ListChecks } from 'lucide-react'
 import { browserSettingsAtom, habitsAtom, settingsAtom } from '@/lib/atoms'
-import type { ViewType } from '@/lib/types'
 import { HabitIcon, TaskIcon } from '@/lib/constants'
-import { isHabitDueToday } from '@/lib/utils'
+import { cn, isHabitDueToday } from '@/lib/utils'
+import { useAtom } from 'jotai'
+import { useTranslations } from 'next-intl'
+import { usePathname, useRouter } from 'next/navigation'
 import { NotificationBadge } from './ui/notification-badge'
 
 interface ViewToggleProps {
-  defaultView?: ViewType
   className?: string
 }
 
 export function ViewToggle({
-  defaultView = 'habits',
   className
 }: ViewToggleProps) {
+  const t = useTranslations('ViewToggle')
   const [browserSettings, setBrowserSettings] = useAtom(browserSettingsAtom)
   const [habits] = useAtom(habitsAtom)
   const [settings] = useAtom(settingsAtom)
+  const pathname = usePathname();
+  const router = useRouter();
 
-  const handleViewChange = (checked: boolean) => {
+  const handleViewChange = () => {
-    const newView = checked ? 'tasks' : 'habits'
+    router.push(pathname.includes("habits") ? "/tasks" : "/habits");
-    setBrowserSettings({
-      ...browserSettings,
-      viewType: newView,
-    })
   }
 
   // Calculate due tasks count
   const dueTasksCount = habits.habits.filter(habit => 
-    habit.isTask && !habit.archived && isHabitDueToday({ habit, timezone: settings.system.timezone })
+    habit.isTask && isHabitDueToday({ habit, timezone: settings.system.timezone })
   ).length
 
   return (
     <div className={cn('inline-flex rounded-full bg-muted/50 h-8', className)}>
       <div className="relative flex gap-0.5 rounded-full bg-background p-0.5 h-full">
         <button
-          onClick={() => handleViewChange(false)}
+          onClick={handleViewChange}
           className={cn(
             'relative z-10 rounded-full px-4 py-2 text-sm font-medium transition-colors flex items-center gap-2',
-            browserSettings.viewType === 'habits' ? 'text-primary-foreground' : 'text-muted-foreground hover:text-foreground'
+            pathname.includes('habits') ? 'text-primary-foreground' : 'text-muted-foreground hover:text-foreground'
           )}
         >
           <HabitIcon className="h-4 w-4" />
-          <span className="hidden sm:inline">Habits</span>
+          <span className="hidden sm:inline">{t('habitsLabel')}</span>
         </button>
         <NotificationBadge
           label={dueTasksCount}
           show={dueTasksCount > 0}
-          variant={browserSettings.viewType === 'tasks' ? 'secondary' : 'default'}
+          variant={pathname.includes('tasks') ? 'secondary' : 'default'}
           className="shadow-md"
         >
           <button
-            onClick={() => handleViewChange(true)}
+            onClick={handleViewChange}
             className={cn(
               'relative z-10 rounded-full px-4 py-2 text-sm font-medium transition-colors flex items-center gap-2',
-              browserSettings.viewType === 'tasks' ? 'text-primary-foreground' : 'text-muted-foreground hover:text-foreground'
+              pathname.includes('tasks') ? 'text-primary-foreground' : 'text-muted-foreground hover:text-foreground'
             )}
           >
             <TaskIcon className="h-4 w-4" />
-            <span className="hidden sm:inline">Tasks</span>
+            <span className="hidden sm:inline">{t('tasksLabel')}</span>
           </button>
         </NotificationBadge>
         <div
           className={cn(
             'absolute left-0.5 top-0.5 h-[calc(100%-0.25rem)] rounded-full bg-primary transition-transform',
-            browserSettings.viewType === 'habits' ? 'w-[calc(50%-0.125rem)]' : 'w-[calc(50%-0.125rem)] translate-x-[calc(100%+0.125rem)]'
+            pathname.includes('habits') ? 'w-[calc(50%-0.125rem)]' : 'w-[calc(50%-0.125rem)] translate-x-[calc(100%+0.125rem)]'
           )}
         />
       </div>

components/WishlistItem.tsx

@@ -1,8 +1,5 @@
-import { WishlistItemType } from '@/lib/types'
-import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from '@/components/ui/card'
-import ReactMarkdown from 'react-markdown'
 import { Button } from '@/components/ui/button'
-import { Coins, Edit, Trash2, Gift, MoreVertical, Archive, ArchiveRestore } from 'lucide-react'
+import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from '@/components/ui/card'
 import {
   DropdownMenu,
   DropdownMenuContent,
@@ -10,6 +7,14 @@ import {
   DropdownMenuSeparator,
   DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu'
+import { currentUserAtom, usersAtom } from '@/lib/atoms'
+import { User, WishlistItemType } from '@/lib/types'
+import { hasPermission } from '@/lib/utils'
+import { useAtom } from 'jotai'
+import { useTranslations } from 'next-intl'
+import DrawingDisplay from './DrawingDisplay'
+import { Avatar, AvatarFallback, AvatarImage } from './ui/avatar'
+import { Archive, ArchiveRestore, Coins, Edit, Gift, MoreVertical, Trash2 } from 'lucide-react'
 
 interface WishlistItemProps {
   item: WishlistItemType
@@ -24,6 +29,25 @@ interface WishlistItemProps {
   isArchived?: boolean
 }
 
+const renderUserAvatars = (item: WishlistItemType, currentUser: User | null, usersData: { users: User[] }) => {
+  if (!item.userIds || item.userIds.length <= 1) return <></>;
+
+  return (
+    <div className="flex -space-x-2 ml-2 flex-shrink-0">
+      {item.userIds?.filter((u) => u !== currentUser?.id).map(userId => {
+        const user = usersData.users.find(u => u.id === userId)
+        if (!user) return <></>;
+        return (
+          <Avatar key={user.id} className="h-6 w-6">
+            <AvatarImage src={user?.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}` || ""} />
+            <AvatarFallback>{user.username[0]}</AvatarFallback>
+          </Avatar>
+        )
+      })}
+    </div>
+  );
+};
+
 export default function WishlistItem({
   item,
   onEdit,
@@ -35,6 +59,13 @@ export default function WishlistItem({
   isHighlighted,
   isRecentlyRedeemed
 }: WishlistItemProps) {
+  const t = useTranslations('WishlistItem')
+  const [currentUser] = useAtom(currentUserAtom)
+  const canWrite = hasPermission(currentUser, 'wishlist', 'write')
+  const canInteract = hasPermission(currentUser, 'wishlist', 'interact')
+  const [usersData] = useAtom(usersAtom)
+
+
   return (
     <Card
       id={`wishlist-${item.id}`}
@@ -42,51 +73,70 @@ export default function WishlistItem({
         } ${isRecentlyRedeemed ? 'animate-[celebrate_1s_ease-in-out] shadow-lg ring-2 ring-primary' : ''
         } ${item.archived ? 'opacity-75' : ''}`}
     >
-      <CardHeader className="flex-none">
+      <CardHeader className="flex-shrink-0">
-        <div className="flex items-center gap-2">
+        <div className="flex justify-between items-start">
+          <div className="flex items-center gap-2 flex-1 min-w-0">
             <CardTitle className={`line-clamp-1 ${item.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>
               {item.name}
             </CardTitle>
             {item.targetCompletions && (
-            <span className="text-sm text-gray-500 dark:text-gray-400">
+              <span className="text-sm text-gray-500 dark:text-gray-400 flex-shrink-0">
-              ({item.targetCompletions} {item.targetCompletions === 1 ? 'use' : 'uses'} left)
+                ({item.targetCompletions === 1 ? t('usesLeftSingular') : t('usesLeftPlural', { count: item.targetCompletions })})
               </span>
             )}
           </div>
+          {renderUserAvatars(item, currentUser as User, usersData)}
+        </div>
+        {(item.description || item.drawing) && (
+          <div className={`flex gap-4 mt-2 ${!item.description ? 'justify-end' : ''}`}>
             {item.description && (
-          <CardDescription className={`whitespace-pre-line ${item.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>
+              <CardDescription className={`whitespace-pre-line flex-1 min-w-0 break-words ${item.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>
                 {item.description}
               </CardDescription>
             )}
+            {item.drawing && (
+              <div className="flex-shrink-0">
+                <DrawingDisplay 
+                  drawingData={item.drawing} 
+                  width={120} 
+                  height={80}
+                  className=""
+                />
+              </div>
+            )}
+          </div>
+        )}
       </CardHeader>
-      <CardContent className="flex-1">
+      <CardContent className="flex-grow flex flex-col justify-end">
+        <div className="mt-auto">
           <div className="flex items-center gap-2">
             <Coins className={`h-4 w-4 ${item.archived ? 'text-gray-400 dark:text-gray-500' : 'text-yellow-400'}`} />
             <span className={`text-sm font-medium ${item.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>
-            {item.coinCost} coins
+              {item.coinCost} {t('coinsSuffix')}
             </span>
           </div>
+        </div>
       </CardContent>
-      <CardFooter className="flex justify-between gap-2">
+      <CardFooter className="flex-shrink-0 flex justify-between gap-2">
         <div className="flex gap-2">
           <Button
             variant={canRedeem ? "default" : "secondary"}
             size="sm"
             onClick={onRedeem}
-            disabled={!canRedeem || item.archived}
+            disabled={!canRedeem || !canInteract || item.archived}
             className={`transition-all duration-300 w-24 sm:w-auto ${isRecentlyRedeemed ? 'bg-green-500 hover:bg-green-600' : ''} ${item.archived ? 'cursor-not-allowed' : ''}`}
           >
             <Gift className={`h-4 w-4 sm:mr-2 ${isRecentlyRedeemed ? 'animate-spin' : ''}`} />
             <span>
               {isRecentlyRedeemed ? (
                 <>
-                  <span className="sm:hidden">Done</span>
+                  <span className="sm:hidden">{t('redeemedDone')}</span>
-                  <span className="hidden sm:inline">Redeemed!</span>
+                  <span className="hidden sm:inline">{t('redeemedExclamation')}</span>
                 </>
               ) : (
                 <>
-                  <span className="sm:hidden">Redeem</span>
+                  <span className="sm:hidden">{t('redeem')}</span>
-                  <span className="hidden sm:inline">Redeem</span>
+                  <span className="hidden sm:inline">{t('redeem')}</span>
                 </>
               )}
             </span>
@@ -98,13 +148,14 @@ export default function WishlistItem({
               variant="edit"
               size="sm"
               onClick={onEdit}
+              disabled={!canWrite}
               className="hidden sm:flex"
             >
               <Edit className="h-4 w-4" />
-              <span className="ml-2">Edit</span>
+              <span className="ml-2">{t('editButton')}</span>
             </Button>
           )}
-          <DropdownMenu>
+          <DropdownMenu modal={false}>
             <DropdownMenuTrigger asChild>
               <Button variant="ghost" size="sm" className="h-8 w-8 p-0">
                 <MoreVertical className="h-4 w-4" />
@@ -112,28 +163,29 @@ export default function WishlistItem({
             </DropdownMenuTrigger>
             <DropdownMenuContent align="end">
               {!item.archived && (
-                <DropdownMenuItem onClick={onArchive}>
+                <DropdownMenuItem disabled={!canWrite} onClick={onArchive}>
                   <Archive className="mr-2 h-4 w-4" />
-                  <span>Archive</span>
+                  <span>{t('archiveButton')}</span>
                 </DropdownMenuItem>
               )}
               {item.archived && (
-                <DropdownMenuItem onClick={onUnarchive}>
+                <DropdownMenuItem disabled={!canWrite} onClick={onUnarchive}>
                   <ArchiveRestore className="mr-2 h-4 w-4" />
-                  <span>Unarchive</span>
+                  <span>{t('unarchiveButton')}</span>
                 </DropdownMenuItem>
               )}
               <DropdownMenuItem onClick={onEdit} className="sm:hidden">
                 <Edit className="mr-2 h-4 w-4" />
-                Edit
+                {t('editButton')}
               </DropdownMenuItem>
               <DropdownMenuSeparator className="sm:hidden" />
               <DropdownMenuItem
-                className="text-red-600 focus:text-red-600 dark:text-red-400 dark:focus:text-red-400 cursor-pointer"
+                className="text-red-600 focus:text-red-600 dark:text-red-400 dark:focus:text-red-400"
                 onClick={onDelete}
+                disabled={!canWrite}
               >
                 <Trash2 className="mr-2 h-4 w-4" />
-                Delete
+                {t('deleteButton')}
               </DropdownMenuItem>
             </DropdownMenuContent>
           </DropdownMenu>
@@ -142,4 +194,3 @@ export default function WishlistItem({
     </Card>
   )
 }
-

components/WishlistManager.tsx

@@ -2,6 +2,7 @@
 
 import { useState, useEffect, useRef } from 'react'
 import { useWishlist } from '@/hooks/useWishlist'
+import { useTranslations } from 'next-intl'
 import { Plus, Gift } from 'lucide-react'
 import EmptyState from './EmptyState'
 import { Button } from '@/components/ui/button'
@@ -13,6 +14,7 @@ import { openWindow } from '@/lib/utils'
 import { toast } from '@/hooks/use-toast'
 
 export default function WishlistManager() {
+  const t = useTranslations('WishlistManager')
   const {
     addWishlistItem,
     editWishlistItem,
@@ -70,8 +72,8 @@ export default function WishlistManager() {
           const opened = openWindow(item.link!)
           if (!opened) {
             toast({
-              title: "Popup Blocked",
+              title: t('popupBlockedTitle'),
-              description: "Please allow popups to open the link",
+              description: t('popupBlockedDescription'),
               variant: "destructive"
             })
           }
@@ -81,20 +83,20 @@ export default function WishlistManager() {
   }
 
   return (
-    <div className="container mx-auto px-4 py-8">
+    <div>
       <div className="flex justify-between items-center mb-6">
-        <h1 className="text-3xl font-bold">My Wishlist</h1>
+        <h1 className="text-xl xs:text-3xl font-bold">{t('title')}</h1>
         <Button onClick={() => setIsModalOpen(true)}>
-          <Plus className="mr-2 h-4 w-4" /> Add Reward
+          <Plus className="mr-2 h-4 w-4" /> {t('addRewardButton')}
         </Button>
       </div>
-      <div className="grid grid-cols-1 md:grid-cols-2 gap-4 items-stretch">
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-4 items-stretch">
         {activeItems.length === 0 ? (
-          <div className="col-span-2">
+          <div className="col-span-1 lg:col-span-2">
             <EmptyState
               icon={Gift}
-              title="Your wishlist is empty"
+              title={t('emptyStateTitle')}
-              description="Add rewards that you'd like to earn with your coins"
+              description={t('emptyStateDescription')}
             />
           </div>
         ) : (
@@ -127,9 +129,9 @@ export default function WishlistManager() {
 
         {archivedItems.length > 0 && (
           <>
-            <div className="col-span-2 relative flex items-center my-6">
+            <div className="col-span-1 lg:col-span-2 relative flex items-center my-6">
               <div className="flex-grow border-t border-gray-300 dark:border-gray-600" />
-              <span className="mx-4 text-sm text-gray-500 dark:text-gray-400">Archived</span>
+              <span className="mx-4 text-sm text-gray-500 dark:text-gray-400">{t('archivedSectionTitle')}</span>
               <div className="flex-grow border-t border-gray-300 dark:border-gray-600" />
             </div>
             {archivedItems.map((item) => (
@@ -150,14 +152,15 @@ export default function WishlistManager() {
           </>
         )}
       </div>
+      {isModalOpen &&
         <AddEditWishlistItemModal
-        isOpen={isModalOpen}
           setIsOpen={setIsModalOpen}
           editingItem={editingItem}
           setEditingItem={setEditingItem}
           addWishlistItem={addWishlistItem}
           editWishlistItem={editWishlistItem}
         />
+      }
       <ConfirmDialog
         isOpen={deleteConfirmation.isOpen}
         onClose={() => setDeleteConfirmation({ isOpen: false, itemId: null })}
@@ -167,9 +170,9 @@ export default function WishlistManager() {
           }
           setDeleteConfirmation({ isOpen: false, itemId: null })
         }}
-        title="Delete Reward"
+        title={t('deleteDialogTitle')}
-        message="Are you sure you want to delete this reward? This action cannot be undone."
+        message={t('deleteDialogMessage')}
-        confirmText="Delete"
+        confirmText={t('deleteButton')}
       />
     </div>
   )

components/jotai-hydrate.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { settingsAtom, habitsAtom, coinsAtom, wishlistAtom } from "@/lib/atoms"
+import { settingsAtom, habitsAtom, coinsAtom, wishlistAtom, usersAtom, serverSettingsAtom } from "@/lib/atoms"
 import { useHydrateAtoms } from "jotai/utils"
 import { JotaiHydrateInitialValues } from "@/lib/types"
 
@@ -12,7 +12,9 @@ export function JotaiHydrate({
     [settingsAtom, initialValues.settings],
     [habitsAtom, initialValues.habits],
     [coinsAtom, initialValues.coins],
-    [wishlistAtom, initialValues.wishlist]
+    [wishlistAtom, initialValues.wishlist],
+    [usersAtom, initialValues.users],
+    [serverSettingsAtom, initialValues.serverSettings],
   ])
   return children
 }

components/theme-toggle.tsx

@@ -1,7 +1,6 @@
 "use client"
 
-import * as React from "react"
+import { Moon, Sun } from "lucide-react"
-import { Moon, MoonIcon, Sun } from "lucide-react"
 import { useTheme } from "next-themes"
 
 import { Button } from "@/components/ui/button"

components/ui/alert-dialog.tsx

@@ -0,0 +1,141 @@
+"use client"
+
+import * as React from "react"
+import * as AlertDialogPrimitive from "@radix-ui/react-alert-dialog"
+
+import { cn } from "@/lib/utils"
+import { buttonVariants } from "@/components/ui/button"
+
+const AlertDialog = AlertDialogPrimitive.Root
+
+const AlertDialogTrigger = AlertDialogPrimitive.Trigger
+
+const AlertDialogPortal = AlertDialogPrimitive.Portal
+
+const AlertDialogOverlay = React.forwardRef<
+  React.ElementRef<typeof AlertDialogPrimitive.Overlay>,
+  React.ComponentPropsWithoutRef<typeof AlertDialogPrimitive.Overlay>
+>(({ className, ...props }, ref) => (
+  <AlertDialogPrimitive.Overlay
+    className={cn(
+      "fixed inset-0 z-50 bg-black/80 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+      className
+    )}
+    {...props}
+    ref={ref}
+  />
+))
+AlertDialogOverlay.displayName = AlertDialogPrimitive.Overlay.displayName
+
+const AlertDialogContent = React.forwardRef<
+  React.ElementRef<typeof AlertDialogPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof AlertDialogPrimitive.Content>
+>(({ className, ...props }, ref) => (
+  <AlertDialogPortal>
+    <AlertDialogOverlay />
+    <AlertDialogPrimitive.Content
+      ref={ref}
+      className={cn(
+        "fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
+        className
+      )}
+      {...props}
+    />
+  </AlertDialogPortal>
+))
+AlertDialogContent.displayName = AlertDialogPrimitive.Content.displayName
+
+const AlertDialogHeader = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col space-y-2 text-center sm:text-left",
+      className
+    )}
+    {...props}
+  />
+)
+AlertDialogHeader.displayName = "AlertDialogHeader"
+
+const AlertDialogFooter = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2",
+      className
+    )}
+    {...props}
+  />
+)
+AlertDialogFooter.displayName = "AlertDialogFooter"
+
+const AlertDialogTitle = React.forwardRef<
+  React.ElementRef<typeof AlertDialogPrimitive.Title>,
+  React.ComponentPropsWithoutRef<typeof AlertDialogPrimitive.Title>
+>(({ className, ...props }, ref) => (
+  <AlertDialogPrimitive.Title
+    ref={ref}
+    className={cn("text-lg font-semibold", className)}
+    {...props}
+  />
+))
+AlertDialogTitle.displayName = AlertDialogPrimitive.Title.displayName
+
+const AlertDialogDescription = React.forwardRef<
+  React.ElementRef<typeof AlertDialogPrimitive.Description>,
+  React.ComponentPropsWithoutRef<typeof AlertDialogPrimitive.Description>
+>(({ className, ...props }, ref) => (
+  <AlertDialogPrimitive.Description
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+))
+AlertDialogDescription.displayName =
+  AlertDialogPrimitive.Description.displayName
+
+const AlertDialogAction = React.forwardRef<
+  React.ElementRef<typeof AlertDialogPrimitive.Action>,
+  React.ComponentPropsWithoutRef<typeof AlertDialogPrimitive.Action>
+>(({ className, ...props }, ref) => (
+  <AlertDialogPrimitive.Action
+    ref={ref}
+    className={cn(buttonVariants(), className)}
+    {...props}
+  />
+))
+AlertDialogAction.displayName = AlertDialogPrimitive.Action.displayName
+
+const AlertDialogCancel = React.forwardRef<
+  React.ElementRef<typeof AlertDialogPrimitive.Cancel>,
+  React.ComponentPropsWithoutRef<typeof AlertDialogPrimitive.Cancel>
+>(({ className, ...props }, ref) => (
+  <AlertDialogPrimitive.Cancel
+    ref={ref}
+    className={cn(
+      buttonVariants({ variant: "outline" }),
+      "mt-2 sm:mt-0",
+      className
+    )}
+    {...props}
+  />
+))
+AlertDialogCancel.displayName = AlertDialogPrimitive.Cancel.displayName
+
+export {
+  AlertDialog,
+  AlertDialogPortal,
+  AlertDialogOverlay,
+  AlertDialogTrigger,
+  AlertDialogContent,
+  AlertDialogHeader,
+  AlertDialogFooter,
+  AlertDialogTitle,
+  AlertDialogDescription,
+  AlertDialogAction,
+  AlertDialogCancel,
+}

components/ui/alert.tsx

@@ -0,0 +1,61 @@
+import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const alertVariants = cva(
+  "relative w-full rounded-lg border p-4 [&>svg~*]:pl-7 [&>svg+div]:translate-y-[-3px] [&>svg]:absolute [&>svg]:left-4 [&>svg]:top-4 [&>svg]:text-foreground",
+  {
+    variants: {
+      variant: {
+        default: "bg-background text-foreground",
+        destructive:
+          "border-destructive/50 text-destructive dark:border-destructive [&>svg]:text-destructive",
+        warning:
+          "border-yellow-200 bg-yellow-50 text-yellow-800 dark:border-yellow-800 dark:bg-yellow-950 dark:text-yellow-200 [&>svg]:text-yellow-600 dark:[&>svg]:text-yellow-400",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  }
+)
+
+const Alert = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement> & VariantProps<typeof alertVariants>
+>(({ className, variant, ...props }, ref) => (
+  <div
+    ref={ref}
+    role="alert"
+    className={cn(alertVariants({ variant }), className)}
+    {...props}
+  />
+))
+Alert.displayName = "Alert"
+
+const AlertTitle = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLHeadingElement>
+>(({ className, ...props }, ref) => (
+  <h5
+    ref={ref}
+    className={cn("mb-1 font-medium leading-none tracking-tight", className)}
+    {...props}
+  />
+))
+AlertTitle.displayName = "AlertTitle"
+
+const AlertDescription = React.forwardRef<
+  HTMLParagraphElement,
+  React.HTMLAttributes<HTMLParagraphElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("text-sm [&_p]:leading-relaxed", className)}
+    {...props}
+  />
+))
+AlertDescription.displayName = "AlertDescription"
+
+export { Alert, AlertTitle, AlertDescription }

components/ui/chart.tsx

@@ -73,7 +73,7 @@ const ChartStyle = ({ id, config }: { id: string; config: ChartConfig }) => {
   )
 
   if (!colorConfig.length) {
-    return null
+    return <></>;
   }
 
   return (
@@ -135,7 +135,7 @@ const ChartTooltipContent = React.forwardRef<
 
     const tooltipLabel = React.useMemo(() => {
       if (hideLabel || !payload?.length) {
-        return null
+        return <></>;
       }
 
       const [item] = payload
@@ -155,7 +155,7 @@ const ChartTooltipContent = React.forwardRef<
       }
 
       if (!value) {
-        return null
+        return <></>;
       }
 
       return <div className={cn("font-medium", labelClassName)}>{value}</div>
@@ -170,7 +170,7 @@ const ChartTooltipContent = React.forwardRef<
     ])
 
     if (!active || !payload?.length) {
-      return null
+      return <></>;
     }
 
     const nestLabel = payload.length === 1 && indicator !== "dot"
@@ -273,7 +273,7 @@ const ChartLegendContent = React.forwardRef<
     const { config } = useChart()
 
     if (!payload?.length) {
-      return null
+      return <></>;
     }
 
     return (

components/ui/scroll-area.tsx

@@ -0,0 +1,48 @@
+"use client"
+
+import * as React from "react"
+import * as ScrollAreaPrimitive from "@radix-ui/react-scroll-area"
+
+import { cn } from "@/lib/utils"
+
+const ScrollArea = React.forwardRef<
+  React.ElementRef<typeof ScrollAreaPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof ScrollAreaPrimitive.Root>
+>(({ className, children, ...props }, ref) => (
+  <ScrollAreaPrimitive.Root
+    ref={ref}
+    className={cn("relative overflow-hidden", className)}
+    {...props}
+  >
+    <ScrollAreaPrimitive.Viewport className="h-full w-full rounded-[inherit]">
+      {children}
+    </ScrollAreaPrimitive.Viewport>
+    <ScrollBar />
+    <ScrollAreaPrimitive.Corner />
+  </ScrollAreaPrimitive.Root>
+))
+ScrollArea.displayName = ScrollAreaPrimitive.Root.displayName
+
+const ScrollBar = React.forwardRef<
+  React.ElementRef<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>,
+  React.ComponentPropsWithoutRef<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>
+>(({ className, orientation = "vertical", ...props }, ref) => (
+  <ScrollAreaPrimitive.ScrollAreaScrollbar
+    ref={ref}
+    orientation={orientation}
+    className={cn(
+      "flex touch-none select-none transition-colors",
+      orientation === "vertical" &&
+        "h-full w-2.5 border-l border-l-transparent p-[1px]",
+      orientation === "horizontal" &&
+        "h-2.5 flex-col border-t border-t-transparent p-[1px]",
+      className
+    )}
+    {...props}
+  >
+    <ScrollAreaPrimitive.ScrollAreaThumb className="relative flex-1 rounded-full bg-border" />
+  </ScrollAreaPrimitive.ScrollAreaScrollbar>
+))
+ScrollBar.displayName = ScrollAreaPrimitive.ScrollAreaScrollbar.displayName
+
+export { ScrollArea, ScrollBar }

components/ui/separator.tsx

@@ -0,0 +1,31 @@
+"use client"
+
+import * as React from "react"
+import * as SeparatorPrimitive from "@radix-ui/react-separator"
+
+import { cn } from "@/lib/utils"
+
+const Separator = React.forwardRef<
+  React.ElementRef<typeof SeparatorPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof SeparatorPrimitive.Root>
+>(
+  (
+    { className, orientation = "horizontal", decorative = true, ...props },
+    ref
+  ) => (
+    <SeparatorPrimitive.Root
+      ref={ref}
+      decorative={decorative}
+      orientation={orientation}
+      className={cn(
+        "shrink-0 bg-border",
+        orientation === "horizontal" ? "h-[1px] w-full" : "h-full w-[1px]",
+        className
+      )}
+      {...props}
+    />
+  )
+)
+Separator.displayName = SeparatorPrimitive.Root.displayName
+
+export { Separator }

docker-compose.yaml

@@ -1,7 +1,11 @@
 services:
   habittrove:
+    image: ghcr.io/manindark/habittrove
+    container_name: habittrove
     ports:
       - "3000:3000"
     volumes:
-      - "./data:/app/data" # Use a relative path instead of $(pwd)
+      - "./data:/app/data"
-    image: dohsimpson/habittrove
+      - "./backups:/app/backups"
+    environment:
+      - AUTH_SECRET=your-secret-key-here # Replace with your actual secret

docs/translation-guide.md

@@ -0,0 +1,77 @@
+# Language Guide
+
+## Adding/Updating Translations
+
+### Adding a New Language
+
+To add a new language translation to HabitTrove:
+
+1. **Create translation file**: 
+   - Copy `messages/en.json` as a template
+   - Save as `messages/{language-code}.json` (e.g., `ko.json` for Korean)
+   - Translate all values while preserving keys and placeholder variables like `{username}`, `{count}`, etc.
+
+2. **Validate translation structure**:
+   ```bash
+   # Ensure JSON is valid
+   jq empty messages/{language-code}.json
+   
+   # Compare structure with English (should show no differences)
+   diff <(jq -S . messages/en.json | jq -r 'keys | sort | .[]') <(jq -S . messages/{language-code}.json | jq -r 'keys | sort | .[]')
+   ```
+
+3. **Add language option to UI**:
+   - Edit `app/settings/page.tsx`
+   - Add new `<option value="{language-code}">{Language Name}</option>` in alphabetical order
+
+4. **Update documentation**:
+   - Add language to README.md supported languages list
+   - Create new changelog entry with version bump
+   - Update package.json version
+
+### Example: Adding Korean (한국어)
+
+```bash
+# 1. Copy translation file
+cp /path/to/ko.json messages/ko.json
+
+# 2. Add to settings page
+# Add: <option value="ko">한국어</option>
+
+# 3. Update README.md
+# Change: 简体中文, 日본語
+# To: 简체中文, 한국어, 日본語
+
+# 4. Add changelog entry
+# Create new version section with language addition
+
+# 5. Bump package version
+# Update version in package.json
+```
+
+### Translation Quality Guidelines
+
+- Use natural, contextually appropriate expressions
+- Maintain consistent terminology throughout
+- Preserve all placeholder variables exactly: `{username}`, `{count}`, `{target}`, etc.
+- Use appropriate formality level for the target language
+- Ensure JSON structure matches English file exactly (385 total keys)
+
+### Validation Commands
+
+```bash
+# Check JSON validity
+jq empty messages/{lang}.json
+
+# Compare key structure
+node -e "
+const en = require('./messages/en.json');
+const target = require('./messages/{lang}.json');
+// ... deep key comparison script
+"
+
+# Verify placeholder consistency
+grep -o '{[^}]*}' messages/en.json | sort | uniq > en_vars.txt
+grep -o '{[^}]*}' messages/{lang}.json | sort | uniq > {lang}_vars.txt
+diff en_vars.txt {lang}_vars.txt
+```

hooks/useCoins.tsx

@@ -1,73 +1,162 @@
-import { useAtom } from 'jotai'
+import { addCoins, removeCoins, saveCoinsData } from '@/app/actions/data';
+import { toast } from '@/hooks/use-toast';
 import {
   coinsAtom,
+  coinsBalanceAtom,
   coinsEarnedTodayAtom,
+  coinsSpentTodayAtom,
+  currentUserAtom,
+  settingsAtom,
   totalEarnedAtom,
   totalSpentAtom,
-  coinsSpentTodayAtom,
+  transactionsTodayAtom,
-  transactionsTodayAtom
+  usersAtom,
-} from '@/lib/atoms'
+} from '@/lib/atoms';
-import { addCoins, removeCoins, saveCoinsData } from '@/app/actions/data'
+import { MAX_COIN_LIMIT } from '@/lib/constants';
-import { CoinsData } from '@/lib/types'
+import { CoinsData } from '@/lib/types';
-import { toast } from '@/hooks/use-toast'
+import { calculateCoinsEarnedToday, calculateCoinsSpentToday, calculateTotalEarned, calculateTotalSpent, calculateTransactionsToday, handlePermissionCheck, roundToInteger } from '@/lib/utils';
+import { useAtom } from 'jotai';
+import { useTranslations } from 'next-intl';
+import { useEffect, useMemo, useState } from 'react';
 
-export function useCoins() {
+export function useCoins(options?: { selectedUser?: string }) {
+  const t = useTranslations('useCoins');
+  const tCommon = useTranslations('Common');
   const [coins, setCoins] = useAtom(coinsAtom)
-  const [coinsEarnedToday] = useAtom(coinsEarnedTodayAtom)
+  const [settings] = useAtom(settingsAtom)
-  const [totalEarned] = useAtom(totalEarnedAtom)
+  const [users] = useAtom(usersAtom)
-  const [totalSpent] = useAtom(totalSpentAtom)
+  const [currentUser] = useAtom(currentUserAtom)
-  const [coinsSpentToday] = useAtom(coinsSpentTodayAtom)
+  const [allCoinsData] = useAtom(coinsAtom) // All coin transactions
-  const [transactionsToday] = useAtom(transactionsTodayAtom)
+  const [loggedInUserBalance] = useAtom(coinsBalanceAtom) // Balance of the *currently logged-in* user
+  const [atomCoinsEarnedToday] = useAtom(coinsEarnedTodayAtom);
+  const [atomTotalEarned] = useAtom(totalEarnedAtom)
+  const [atomTotalSpent] = useAtom(totalSpentAtom)
+  const [atomCoinsSpentToday] = useAtom(coinsSpentTodayAtom);
+  const [atomTransactionsToday] = useAtom(transactionsTodayAtom);
+  const targetUser = options?.selectedUser ? users.users.find(u => u.id === options.selectedUser) : currentUser
+  
+  const transactions = useMemo(() => {
+    return allCoinsData.transactions.filter(t => t.userId === targetUser?.id);
+  }, [allCoinsData, targetUser?.id]);
+
+  const timezone = settings.system.timezone;
+  const [coinsEarnedToday, setCoinsEarnedToday] = useState(0);
+  const [totalEarned, setTotalEarned] = useState(0);
+  const [totalSpent, setTotalSpent] = useState(0);
+  const [coinsSpentToday, setCoinsSpentToday] = useState(0);
+  const [transactionsToday, setTransactionsToday] = useState<number>(0);
+  const [balance, setBalance] = useState(0);
+
+  useEffect(() => {
+    // Calculate other metrics
+    if (targetUser?.id && targetUser.id === currentUser?.id) {
+      // If the target user is the currently logged-in user, use the derived atom's value
+      setCoinsEarnedToday(atomCoinsEarnedToday);
+      setTotalEarned(atomTotalEarned);
+      setTotalSpent(atomTotalSpent);
+      setCoinsSpentToday(atomCoinsSpentToday);
+      setTransactionsToday(atomTransactionsToday);
+      setBalance(loggedInUserBalance);
+    } else if (targetUser?.id) {
+      // If an admin is viewing another user, calculate their metrics manually
+      const earnedToday = calculateCoinsEarnedToday(transactions, timezone);
+      setCoinsEarnedToday(roundToInteger(earnedToday));
+
+      const totalEarnedVal = calculateTotalEarned(transactions);
+      setTotalEarned(roundToInteger(totalEarnedVal));
+
+      const totalSpentVal = calculateTotalSpent(transactions);
+      setTotalSpent(roundToInteger(totalSpentVal));
+
+      const spentToday = calculateCoinsSpentToday(transactions, timezone);
+      setCoinsSpentToday(roundToInteger(spentToday));
+
+      setTransactionsToday(calculateTransactionsToday(transactions, timezone)); // This is a count
+
+      const calculatedBalance = transactions.reduce((acc, t) => acc + t.amount, 0);
+      setBalance(roundToInteger(calculatedBalance));
+    }
+  }, [
+    targetUser?.id,
+    currentUser?.id,
+    transactions, // Memoized: depends on allCoinsData and targetUser?.id
+    timezone,
+    loggedInUserBalance,
+    atomCoinsEarnedToday,
+    atomTotalEarned,
+    atomTotalSpent,
+    atomCoinsSpentToday,
+    atomTransactionsToday,
+  ]);
 
   const add = async (amount: number, description: string, note?: string) => {
+    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return <></>;
     if (isNaN(amount) || amount <= 0) {
       toast({
-        title: "Invalid amount",
+        title: t("invalidAmountTitle"),
-        description: "Please enter a valid positive number"
+        description: t("invalidAmountDescription")
       })
-      return null
+      return <></>;
+    }
+    if (amount > MAX_COIN_LIMIT) {
+      toast({
+        title: t("invalidAmountTitle"),
+        description: t("maxAmountExceededDescription", { max: MAX_COIN_LIMIT })
+      })
+      return <></>;
     }
 
     const data = await addCoins({
       amount,
       description,
       type: 'MANUAL_ADJUSTMENT',
-      note
+      note,
+      userId: targetUser?.id
     })
     setCoins(data)
-    toast({ title: "Success", description: `Added ${amount} coins` })
+    toast({ title: t("successTitle"), description: t("addedCoinsDescription", { amount }) })
     return data
   }
 
   const remove = async (amount: number, description: string, note?: string) => {
+    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return <></>;
     const numAmount = Math.abs(amount)
     if (isNaN(numAmount) || numAmount <= 0) {
       toast({
-        title: "Invalid amount",
+        title: t("invalidAmountTitle"),
-        description: "Please enter a valid positive number"
+        description: t("invalidAmountDescription")
       })
-      return null
+      return <></>;
+    }
+    if (numAmount > MAX_COIN_LIMIT) {
+      toast({
+        title: t("invalidAmountTitle"),
+        description: t("maxAmountExceededDescription", { max: MAX_COIN_LIMIT })
+      })
+      return <></>;
     }
 
     const data = await removeCoins({
       amount: numAmount,
       description,
       type: 'MANUAL_ADJUSTMENT',
-      note
+      note,
+      userId: targetUser?.id
     })
     setCoins(data)
-    toast({ title: "Success", description: `Removed ${numAmount} coins` })
+    toast({ title: t("successTitle"), description: t("removedCoinsDescription", { amount: numAmount }) })
     return data
   }
 
   const updateNote = async (transactionId: string, note: string) => {
+    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return <></>;
     const transaction = coins.transactions.find(t => t.id === transactionId)
     if (!transaction) {
       toast({
-        title: "Error",
+        title: tCommon("errorTitle"),
-        description: "Transaction not found"
+        description: t("transactionNotFoundDescription")
       })
-      return null
+      return <></>;
     }
 
     const updatedTransaction = {
@@ -93,8 +182,8 @@ export function useCoins() {
     add,
     remove,
     updateNote,
-    balance: coins.balance,
+    balance,
-    transactions: coins.transactions,
+    transactions: transactions,
     coinsEarnedToday,
     totalEarned,
     totalSpent,

hooks/useHabits.tsx

@@ -1,30 +1,37 @@
-import { useAtom } from 'jotai'
-import { habitsAtom, coinsAtom, settingsAtom } from '@/lib/atoms'
 import { addCoins, removeCoins, saveHabitsData } from '@/app/actions/data'
+import { ToastAction } from '@/components/ui/toast'
+import { toast } from '@/hooks/use-toast'
+import { coinsAtom, currentUserAtom, habitFreqMapAtom, habitsAtom, settingsAtom, usersAtom } from '@/lib/atoms'
 import { Habit } from '@/lib/types'
-import { DateTime } from 'luxon'
 import {
-  getNowInMilliseconds, 
+  d2s,
-  getTodayInTimezone, 
-  isSameDate, 
-  t2d, 
   d2t,
-  getNow, 
   getCompletionsForDate,
   getISODate,
-  d2s,
+  getNow,
-  playSound 
+  getTodayInTimezone,
+  handlePermissionCheck,
+  isSameDate,
+  playSound,
+  t2d
 } from '@/lib/utils'
-import { toast } from '@/hooks/use-toast'
+import { useAtom } from 'jotai'
-import { ToastAction } from '@/components/ui/toast'
 import { Undo2 } from 'lucide-react'
+import { DateTime } from 'luxon'
+import { useTranslations } from 'next-intl'
 
 export function useHabits() {
+  const t = useTranslations('useHabits');
+  const tCommon = useTranslations('Common');
+  const [usersData] = useAtom(usersAtom)
+  const [currentUser] = useAtom(currentUserAtom)
   const [habitsData, setHabitsData] = useAtom(habitsAtom)
   const [coins, setCoins] = useAtom(coinsAtom)
   const [settings] = useAtom(settingsAtom)
+  const [habitFreqMap] = useAtom(habitFreqMapAtom)
 
   const completeHabit = async (habit: Habit) => {
+    if (!handlePermissionCheck(currentUser, 'habit', 'interact', tCommon)) return
     const timezone = settings.system.timezone
     const today = getTodayInTimezone(timezone)
 
@@ -39,11 +46,11 @@ export function useHabits() {
     // Check if already completed
     if (completionsToday >= target) {
       toast({
-        title: "Already completed",
+        title: t("alreadyCompletedTitle"),
-        description: `You've already completed this habit today.`,
+        description: t("alreadyCompletedDescription"),
         variant: "destructive",
       })
-      return null
+      return
     }
 
     // Add new completion
@@ -69,21 +76,21 @@ export function useHabits() {
         type: habit.isTask ? 'TASK_COMPLETION' : 'HABIT_COMPLETION',
         relatedItemId: habit.id,
       })
-      isTargetReached && playSound()
+      playSound()
       toast({
-        title: "Habit completed!",
+        title: t("completedTitle"),
-        description: `You earned ${habit.coinReward} coins.`,
+        description: t("earnedCoinsDescription", { coinReward: habit.coinReward }),
-        action: <ToastAction altText="Undo" className="gap-2" onClick={() => undoComplete(updatedHabit)}>
+        action: <ToastAction altText={tCommon('undoButton')} className="gap-2" onClick={() => undoComplete(updatedHabit)}>
-          <Undo2 className="h-4 w-4" />Undo
+          <Undo2 className="h-4 w-4" />{tCommon('undoButton')}
         </ToastAction>
       })
       setCoins(updatedCoins)
     } else {
       toast({
-        title: "Progress!",
+        title: t("progressTitle"),
-        description: `You've completed ${completionsToday + 1}/${target} times today.`,
+        description: t("progressDescription", { count: completionsToday + 1, target }),
-        action: <ToastAction altText="Undo" className="gap-2" onClick={() => undoComplete(updatedHabit)}>
+        action: <ToastAction altText={tCommon('undoButton')} className="gap-2" onClick={() => undoComplete(updatedHabit)}>
-          <Undo2 className="h-4 w-4" />Undo
+          <Undo2 className="h-4 w-4" />{tCommon('undoButton')}
         </ToastAction>
       })
     }
@@ -98,6 +105,7 @@ export function useHabits() {
   }
 
   const undoComplete = async (habit: Habit) => {
+    if (!handlePermissionCheck(currentUser, 'habit', 'interact', tCommon)) return
     const timezone = settings.system.timezone
     const today = t2d({ timestamp: getTodayInTimezone(timezone), timezone })
 
@@ -113,7 +121,7 @@ export function useHabits() {
         completions: habit.completions.filter(
           (_, index) => index !== habit.completions.length - 1
         ),
-        archived: habit.isTask ? undefined : habit.archived // Unarchive if it's a task
+        archived: habit.isTask ? false : habit.archived // Unarchive if it's a task
       }
 
       const updatedHabits = habitsData.habits.map(h =>
@@ -136,14 +144,17 @@ export function useHabits() {
       }
 
       toast({
-        title: "Completion undone",
+        title: t("completionUndoneTitle"),
-        description: `You have ${getCompletionsForDate({
+        description: t("completionUndoneDescription", {
+          count: getCompletionsForDate({
             habit: updatedHabit,
             date: today,
             timezone
-        })}/${target} completions today.`,
+          }),
-        action: <ToastAction altText="Redo" onClick={() => completeHabit(updatedHabit)}>
+          target
-          <Undo2 className="h-4 w-4" />Redo
+        }),
+        action: <ToastAction altText={tCommon('redoButton')} onClick={() => completeHabit(updatedHabit)}>
+          <Undo2 className="h-4 w-4" />{tCommon('redoButton')}
         </ToastAction>
       })
 
@@ -154,18 +165,19 @@ export function useHabits() {
       }
     } else {
       toast({
-        title: "No completions to undo",
+        title: t("noCompletionsToUndoTitle"),
-        description: "This habit hasn't been completed today.",
+        description: t("noCompletionsToUndoDescription"),
         variant: "destructive",
       })
-      return null
+      return
     }
   }
 
   const saveHabit = async (habit: Omit<Habit, 'id'> & { id?: string }) => {
+    if (!handlePermissionCheck(currentUser, 'habit', 'write', tCommon)) return
     const newHabit = {
       ...habit,
-      id: habit.id || getNowInMilliseconds().toString()
+      id: habit.id || crypto.randomUUID()
     }
     const updatedHabits = habit.id
       ? habitsData.habits.map(h => h.id === habit.id ? newHabit : h)
@@ -177,6 +189,7 @@ export function useHabits() {
   }
 
   const deleteHabit = async (id: string) => {
+    if (!handlePermissionCheck(currentUser, 'habit', 'write', tCommon)) return
     const updatedHabits = habitsData.habits.filter(h => h.id !== id)
     await saveHabitsData({ habits: updatedHabits })
     setHabitsData({ habits: updatedHabits })
@@ -184,6 +197,7 @@ export function useHabits() {
   }
 
   const completePastHabit = async (habit: Habit, date: DateTime) => {
+    if (!handlePermissionCheck(currentUser, 'habit', 'interact', tCommon)) return
     const timezone = settings.system.timezone
     const dateKey = getISODate({ dateTime: date, timezone })
 
@@ -195,11 +209,11 @@ export function useHabits() {
 
     if (completionsOnDate >= target) {
       toast({
-        title: "Already completed",
+        title: t("alreadyCompletedPastDateTitle"),
-        description: `This habit was already completed on ${d2s({ dateTime: date, timezone, format: 'yyyy-MM-dd' })}.`,
+        description: t("alreadyCompletedPastDateDescription", { dateKey: d2s({ dateTime: date, timezone, format: 'yyyy-MM-dd' }) }),
         variant: "destructive",
       })
-      return null
+      return
     }
 
     // Use current time but with the past date
@@ -236,12 +250,12 @@ export function useHabits() {
     }
 
     toast({
-      title: isTargetReached ? "Habit completed!" : "Progress!",
+      title: isTargetReached ? t("completedTitle") : t("progressTitle"),
       description: isTargetReached
-        ? `You earned ${habit.coinReward} coins for ${dateKey}.`
+        ? t("earnedCoinsPastDateDescription", { coinReward: habit.coinReward, dateKey })
-        : `You've completed ${completionsOnDate + 1}/${target} times on ${dateKey}.`,
+        : t("progressPastDateDescription", { count: completionsOnDate + 1, target, dateKey }),
-      action: <ToastAction altText="Undo" className="gap-2" onClick={() => undoComplete(updatedHabit)}>
+      action: <ToastAction altText={tCommon('undoButton')} className="gap-2" onClick={() => undoComplete(updatedHabit)}>
-        <Undo2 className="h-4 w-4" />Undo
+        <Undo2 className="h-4 w-4" />{tCommon('undoButton')}
       </ToastAction>
     })
 
@@ -253,6 +267,7 @@ export function useHabits() {
   }
 
   const archiveHabit = async (id: string) => {
+    if (!handlePermissionCheck(currentUser, 'habit', 'write', tCommon)) return
     const updatedHabits = habitsData.habits.map(h =>
       h.id === id ? { ...h, archived: true } : h
     )
@@ -261,8 +276,9 @@ export function useHabits() {
   }
 
   const unarchiveHabit = async (id: string) => {
+    if (!handlePermissionCheck(currentUser, 'habit', 'write', tCommon)) return
     const updatedHabits = habitsData.habits.map(h =>
-      h.id === id ? { ...h, archived: undefined } : h
+      h.id === id ? { ...h, archived: false } : h
     )
     await saveHabitsData({ habits: updatedHabits })
     setHabitsData({ habits: updatedHabits })
@@ -275,6 +291,7 @@ export function useHabits() {
     deleteHabit,
     completePastHabit,
     archiveHabit,
-    unarchiveHabit
+    unarchiveHabit,
+    habitFreqMap,
   }
 }

hooks/useWishlist.tsx

@@ -1,43 +1,56 @@
-import { useAtom } from 'jotai'
+import { removeCoins, saveWishlistItems } from '@/app/actions/data'
-import { wishlistAtom, coinsAtom } from '@/lib/atoms'
-import { saveWishlistItems, removeCoins } from '@/app/actions/data'
 import { toast } from '@/hooks/use-toast'
+import { coinsAtom, currentUserAtom, wishlistAtom } from '@/lib/atoms'
 import { WishlistItemType } from '@/lib/types'
+import { handlePermissionCheck } from '@/lib/utils'
 import { celebrations } from '@/utils/celebrations'
+import { useAtom } from 'jotai'
+import { useTranslations } from 'next-intl'
+import { useCoins } from './useCoins'
 
 export function useWishlist() {
+  const t = useTranslations('useWishlist');
+  const tCommon = useTranslations('Common');
+  const [user] = useAtom(currentUserAtom)
   const [wishlist, setWishlist] = useAtom(wishlistAtom)
   const [coins, setCoins] = useAtom(coinsAtom)
-  const balance = coins.balance
+  const { balance } = useCoins()
 
   const addWishlistItem = async (item: Omit<WishlistItemType, 'id'>) => {
+    if (!handlePermissionCheck(user, 'wishlist', 'write', tCommon)) return
     const newItem = { ...item, id: Date.now().toString() }
     const newItems = [...wishlist.items, newItem]
-    setWishlist({ items: newItems })
+    const newWishListData = { items: newItems }
-    await saveWishlistItems(newItems)
+    setWishlist(newWishListData)
+    await saveWishlistItems(newWishListData)
   }
 
   const editWishlistItem = async (updatedItem: WishlistItemType) => {
+    if (!handlePermissionCheck(user, 'wishlist', 'write', tCommon)) return
     const newItems = wishlist.items.map(item =>
       item.id === updatedItem.id ? updatedItem : item
     )
-    setWishlist({ items: newItems })
+    const newWishListData = { items: newItems }
-    await saveWishlistItems(newItems)
+    setWishlist(newWishListData)
+    await saveWishlistItems(newWishListData)
   }
 
   const deleteWishlistItem = async (id: string) => {
+    if (!handlePermissionCheck(user, 'wishlist', 'write', tCommon)) return
     const newItems = wishlist.items.filter(item => item.id !== id)
-    setWishlist({ items: newItems })
+    const newWishListData = { items: newItems }
-    await saveWishlistItems(newItems)
+    setWishlist(newWishListData)
+    await saveWishlistItems(newWishListData)
   }
 
   const redeemWishlistItem = async (item: WishlistItemType) => {
+    if (!handlePermissionCheck(user, 'wishlist', 'interact', tCommon)) return false
     if (balance >= item.coinCost) {
       // Check if item has target completions and if we've reached the limit
       if (item.targetCompletions && item.targetCompletions <= 0) {
         toast({
-          title: "Redemption limit reached",
+          title: t("redemptionLimitReachedTitle"),
-          description: `You've reached the maximum redemptions for "${item.name}".`,
+          description: t("redemptionLimitReachedDescription", { itemName: item.name }),
           variant: "destructive",
         })
         return false
@@ -71,8 +84,9 @@ export function useWishlist() {
           }
           return wishlistItem
         })
-        setWishlist({ items: newItems })
+        const newWishListData = { items: newItems }
-        await saveWishlistItems(newItems)
+        setWishlist(newWishListData)
+        await saveWishlistItems(newWishListData)
       }
 
       // Randomly choose a celebration effect
@@ -83,15 +97,15 @@ export function useWishlist() {
       randomEffect()
 
       toast({
-        title: "🎉 Reward Redeemed!",
+        title: t("rewardRedeemedTitle"),
-        description: `You've redeemed "${item.name}" for ${item.coinCost} coins.`,
+        description: t("rewardRedeemedDescription", { itemName: item.name, itemCoinCost: item.coinCost }),
       })
 
       return true
     } else {
       toast({
-        title: "Not enough coins",
+        title: t("notEnoughCoinsTitle"),
-        description: `You need ${item.coinCost - balance} more coins to redeem this reward.`,
+        description: t("notEnoughCoinsDescription", { coinsNeeded: item.coinCost - balance }),
         variant: "destructive",
       })
       return false
@@ -101,19 +115,23 @@ export function useWishlist() {
   const canRedeem = (cost: number) => balance >= cost
 
   const archiveWishlistItem = async (id: string) => {
+    if (!handlePermissionCheck(user, 'wishlist', 'write', tCommon)) return
     const newItems = wishlist.items.map(item =>
       item.id === id ? { ...item, archived: true } : item
     )
-    setWishlist({ items: newItems })
+    const newWishListData = { items: newItems }
-    await saveWishlistItems(newItems)
+    setWishlist(newWishListData)
+    await saveWishlistItems(newWishListData)
   }
 
   const unarchiveWishlistItem = async (id: string) => {
+    if (!handlePermissionCheck(user, 'wishlist', 'write', tCommon)) return
     const newItems = wishlist.items.map(item =>
-      item.id === id ? { ...item, archived: undefined } : item
+      item.id === id ? { ...item, archived: false } : item
     )
-    setWishlist({ items: newItems })
+    const newWishListData = { items: newItems }
-    await saveWishlistItems(newItems)
+    setWishlist(newWishListData)
+    await saveWishlistItems(newWishListData)
   }
 
   return {

i18n/request.ts

@@ -0,0 +1,13 @@
+import { getRequestConfig } from 'next-intl/server';
+import { loadSettings } from '@/app/actions/data'; // Adjust path as necessary
+
+export default getRequestConfig(async () => {
+  // Load settings to get the user's preferred language
+  const settings = await loadSettings();
+  const locale = settings.system.language || 'en'; // Fallback to 'en' if not set
+
+  return {
+    locale,
+    messages: (await import(`../messages/${locale}.json`)).default
+  };
+});

instrumentation.ts

@@ -0,0 +1,28 @@
+import { init } from '@/lib/env.server'; // startup env var check
+
+// Ensure this function is exported
+export async function register() {
+  // We only want to run this code on the server side
+  if (process.env.NEXT_RUNTIME === 'nodejs') {
+    console.log('Node.js runtime detected, running server-side instrumentation...');
+    // Initialize environment variables first
+    console.log('Initializing environment variables...');
+    init();
+    console.log('Environment variables initialized.');
+
+    // Dynamically import the scheduler initializer
+    // Use await import() for ESM compatibility
+    try {
+      console.log('Attempting to import scheduler...');
+      // Ensure the path is correct relative to the project root
+      const { initializeScheduler } = await import('./lib/scheduler');
+      console.log('Scheduler imported successfully. Initializing...');
+      initializeScheduler();
+      console.log('Scheduler initialization called.');
+    } catch (error) {
+      console.error('Failed to import or initialize scheduler:', error);
+    }
+  } else {
+    console.log(`Instrumentation hook running in environment: ${process.env.NEXT_RUNTIME}. Skipping server-side initialization.`);
+  }
+}

lib/atoms.ts

@@ -1,63 +1,86 @@
-import { atom } from "jotai";
 import {
-  getDefaultSettings,
-  getDefaultHabitsData,
-  getDefaultCoinsData,
-  getDefaultWishlistData,
-  Habit,
-  ViewType,
-} from "./types";
-import {
-  getTodayInTimezone,
-  isSameDate,
-  t2d,
   calculateCoinsEarnedToday,
+  calculateCoinsSpentToday,
   calculateTotalEarned,
   calculateTotalSpent,
-  calculateCoinsSpentToday,
   calculateTransactionsToday,
+  generateCryptoHash,
   getCompletionsForToday,
-  getISODate
+  getHabitFreq,
+  isHabitDue,
+  prepareDataForHashing,
+  roundToInteger,
+  t2d
 } from "@/lib/utils";
-import { atomWithStorage } from "jotai/utils";
+import { atom } from "jotai";
+import { atomFamily, atomWithStorage } from "jotai/utils";
+import { DateTime } from "luxon";
+import {
+  CoinsData,
+  CompletionCache,
+  Freq,
+  getDefaultCoinsData,
+  getDefaultHabitsData,
+  getDefaultServerSettings,
+  getDefaultSettings,
+  getDefaultUsersData,
+  getDefaultWishlistData,
+  Habit,
+  HabitsData,
+  ServerSettings,
+  Settings,
+  UserData,
+  UserId,
+  WishlistData
+} from "./types";
 
 export interface BrowserSettings {
-  viewType: ViewType
+  expandedHabits: boolean
+  expandedTasks: boolean
+  expandedWishlist: boolean
 }
 
 export const browserSettingsAtom = atomWithStorage('browserSettings', {
-  viewType: 'habits'
+  expandedHabits: false,
+  expandedTasks: false,
+  expandedWishlist: false
 } as BrowserSettings)
 
-export const settingsAtom = atom(getDefaultSettings());
+export const usersAtom = atom(getDefaultUsersData<UserData>())
-export const habitsAtom = atom(getDefaultHabitsData());
+export const settingsAtom = atom(getDefaultSettings<Settings>());
-export const coinsAtom = atom(getDefaultCoinsData());
+export const habitsAtom = atom(getDefaultHabitsData<HabitsData>());
-export const wishlistAtom = atom(getDefaultWishlistData());
+export const coinsAtom = atom(getDefaultCoinsData<CoinsData>());
+export const wishlistAtom = atom(getDefaultWishlistData<WishlistData>());
+export const serverSettingsAtom = atom(getDefaultServerSettings<ServerSettings>());
 
 // Derived atom for coins earned today
 export const coinsEarnedTodayAtom = atom((get) => {
   const coins = get(coinsAtom);
   const settings = get(settingsAtom);
-  return calculateCoinsEarnedToday(coins.transactions, settings.system.timezone);
+  const value = calculateCoinsEarnedToday(coins.transactions, settings.system.timezone);
+  return roundToInteger(value);
 });
 
 // Derived atom for total earned
 export const totalEarnedAtom = atom((get) => {
   const coins = get(coinsAtom);
-  return calculateTotalEarned(coins.transactions);
+  const value = calculateTotalEarned(coins.transactions);
+  return roundToInteger(value);
 });
 
 // Derived atom for total spent
 export const totalSpentAtom = atom((get) => {
   const coins = get(coinsAtom);
-  return calculateTotalSpent(coins.transactions);
+  const value = calculateTotalSpent(coins.transactions);
+  return roundToInteger(value);
 });
 
 // Derived atom for coins spent today
 export const coinsSpentTodayAtom = atom((get) => {
   const coins = get(coinsAtom);
   const settings = get(settingsAtom);
-  return calculateCoinsSpentToday(coins.transactions, settings.system.timezone);
+  const value = calculateCoinsSpentToday(coins.transactions, settings.system.timezone);
+  return roundToInteger(value);
 });
 
 // Derived atom for transactions today
@@ -67,6 +90,29 @@ export const transactionsTodayAtom = atom((get) => {
   return calculateTransactionsToday(coins.transactions, settings.system.timezone);
 });
 
+// Atom to store the current logged-in user's ID.
+// This should be set by your application when the user session is available.
+export const currentUserIdAtom = atom<UserId | undefined>(undefined);
+
+export const currentUserAtom = atom((get) => {
+  const currentUserId = get(currentUserIdAtom);
+  const users = get(usersAtom);
+  return users.users.find(user => user.id === currentUserId);
+})
+
+// Derived atom for current balance for the logged-in user
+export const coinsBalanceAtom = atom((get) => {
+  const loggedInUserId = get(currentUserIdAtom);
+  if (!loggedInUserId) {
+    return 0; // No user logged in or ID not set, so balance is 0
+  }
+  const coins = get(coinsAtom);
+  const balance = coins.transactions
+    .filter(transaction => transaction.userId === loggedInUserId)
+    .reduce((sum, transaction) => sum + transaction.amount, 0);
+  return roundToInteger(balance);
+});
+
 /* transient atoms */
 interface PomodoroAtom {
   show: boolean
@@ -82,37 +128,78 @@ export const pomodoroAtom = atom<PomodoroAtom>({
   minimized: false,
 })
 
-// Derived atom for *fully* completed habits by date, respecting target completions
+export const userSelectAtom = atom<boolean>(false)
-export const completedHabitsMapAtom = atom((get) => {
+export const aboutOpenAtom = atom<boolean>(false)
-  const habits = get(habitsAtom).habits
-  const timezone = get(settingsAtom).system.timezone
 
-  const map = new Map<string, Habit[]>()
+/**
+ * Asynchronous atom that calculates a freshness token (hash) based on the current client-side data.
+ * This token can be compared with a server-generated token to detect data discrepancies.
+ */
+export const clientFreshnessTokenAtom = atom(async (get) => {
+  const settings = get(settingsAtom);
+  const habits = get(habitsAtom);
+  const coins = get(coinsAtom);
+  const wishlist = get(wishlistAtom);
+  const users = get(usersAtom);
+
+  const dataString = prepareDataForHashing(settings, habits, coins, wishlist, users);
+  const hash = await generateCryptoHash(dataString);
+  return hash;
+});
+
+// Derived atom for completion cache
+export const completionCacheAtom = atom((get) => {
+  const habits = get(habitsAtom).habits;
+  const timezone = get(settingsAtom).system.timezone;
+  const cache: CompletionCache = {};
 
   habits.forEach(habit => {
-    // Group completions by date
+    habit.completions.forEach(utcTimestamp => {
-    const completionsByDate = new Map<string, number>()
+      const localDate = t2d({ timestamp: utcTimestamp, timezone })
+        .toFormat('yyyy-MM-dd');
 
-    habit.completions.forEach(completion => {
+      if (!cache[localDate]) {
-      const dateKey = getISODate({ dateTime: t2d({ timestamp: completion, timezone }), timezone })
+        cache[localDate] = {};
-      completionsByDate.set(dateKey, (completionsByDate.get(dateKey) || 0) + 1)
-    })
-
-    // Check if habit meets target completions for each date
-    completionsByDate.forEach((count, dateKey) => {
-      const target = habit.targetCompletions || 1
-      if (count >= target) {
-        if (!map.has(dateKey)) {
-          map.set(dateKey, [])
       }
-        map.get(dateKey)!.push(habit)
+
+      cache[localDate][habit.id] = (cache[localDate][habit.id] || 0) + 1;
+    });
+  });
+
+  return cache;
+});
+
+// Derived atom for completed habits by date, using the cache
+export const completedHabitsMapAtom = atom((get) => {
+  const habits = get(habitsAtom).habits;
+  const completionCache = get(completionCacheAtom);
+  const map = new Map<string, Habit[]>();
+
+  // For each date in the cache
+  Object.entries(completionCache).forEach(([dateKey, habitCompletions]) => {
+    const completedHabits = habits.filter(habit => {
+      const completionsNeeded = habit.targetCompletions || 1;
+      const completionsAchieved = habitCompletions[habit.id] || 0;
+      return completionsAchieved >= completionsNeeded;
+    });
+
+    if (completedHabits.length > 0) {
+      map.set(dateKey, completedHabits);
     }
-    })
+  });
-  })
 
-  return map
+  return map;
-})
+});
 
+// Derived atom for habit frequency map
+export const habitFreqMapAtom = atom((get) => {
+  const habits = get(habitsAtom).habits;
+  const map = new Map<string, Freq>();
+  habits.forEach(habit => {
+    map.set(habit.id, getHabitFreq(habit));
+  });
+  return map;
+});
 
 export const pomodoroTodayCompletionsAtom = atom((get) => {
   const pomo = get(pomodoroAtom)
@@ -129,3 +216,21 @@ export const pomodoroTodayCompletionsAtom = atom((get) => {
     timezone: settings.system.timezone
   })
 })
+
+// Derived atom to check if any habits are tasks
+export const hasTasksAtom = atom((get) => {
+  const habits = get(habitsAtom)
+  return habits.habits.some(habit => habit.isTask === true)
+})
+
+// Atom family for habits by specific date
+export const habitsByDateFamily = atomFamily((dateString: string) =>
+  atom((get) => {
+    const habits = get(habitsAtom).habits;
+    const settings = get(settingsAtom);
+    const timezone = settings.system.timezone;
+
+    const date = DateTime.fromISO(dateString).setZone(timezone);
+    return habits.filter(habit => isHabitDue({ habit, timezone, date }));
+  })
+);

lib/backup.ts

@@ -0,0 +1,143 @@
+import fs from 'fs/promises';
+import { createWriteStream } from 'fs'; // Use specific import for createWriteStream
+import path from 'path';
+import archiver from 'archiver';
+import { loadSettings } from '@/app/actions/data'; // Adjust path if needed
+import { DateTime } from 'luxon';
+
+const BACKUP_DIR = path.join(process.cwd(), 'backups');
+const DATA_DIR = path.join(process.cwd(), 'data');
+const MAX_BACKUPS = 7; // Number of backups to keep
+
+async function ensureBackupDir() {
+  try {
+    await fs.access(BACKUP_DIR);
+  } catch {
+    await fs.mkdir(BACKUP_DIR, { recursive: true });
+    console.log('Created backup directory:', BACKUP_DIR);
+  }
+}
+
+async function rotateBackups() {
+  try {
+    await ensureBackupDir();
+    const files = await fs.readdir(BACKUP_DIR);
+    const backupFiles = files
+      .filter(file => file.startsWith('backup-') && file.endsWith('.zip'))
+      .map(file => ({
+        name: file,
+        path: path.join(BACKUP_DIR, file),
+      }));
+
+    if (backupFiles.length <= MAX_BACKUPS) {
+      console.log(`Rotation check: ${backupFiles.length} backups found, less than or equal to max ${MAX_BACKUPS}. No rotation needed.`);
+      return; // No rotation needed
+    }
+
+    console.log(`Rotation check: ${backupFiles.length} backups found, exceeding max ${MAX_BACKUPS}. Starting rotation.`);
+
+    // Get stats to sort by creation time (mtime as proxy)
+    const fileStats = await Promise.all(
+      backupFiles.map(async (file) => ({
+        ...file,
+        stat: await fs.stat(file.path),
+      }))
+    );
+
+    // Sort oldest first
+    fileStats.sort((a, b) => a.stat.mtime.getTime() - b.stat.mtime.getTime());
+
+    const filesToDelete = fileStats.slice(0, fileStats.length - MAX_BACKUPS);
+    console.log(`Identified ${filesToDelete.length} backups to delete.`);
+
+    for (const file of filesToDelete) {
+      try {
+        await fs.unlink(file.path);
+        console.log(`Rotated (deleted) old backup: ${file.name}`);
+      } catch (err) {
+        console.error(`Error deleting old backup ${file.name}:`, err);
+      }
+    }
+  } catch (error) {
+    console.error('Error during backup rotation:', error);
+  }
+}
+
+export async function runBackup() {
+  try {
+    const settings = await loadSettings();
+    if (!settings.system.autoBackupEnabled) {
+      console.log('Auto backup is disabled in settings. Skipping backup.');
+      return;
+    }
+
+    console.log('Starting daily backup...');
+    await ensureBackupDir();
+
+    const timestamp = DateTime.now().toFormat('yyyy-MM-dd_HH-mm-ss');
+    const backupFileName = `backup-${timestamp}.zip`;
+    const backupFilePath = path.join(BACKUP_DIR, backupFileName);
+
+    // Use createWriteStream from fs directly
+    const output = createWriteStream(backupFilePath);
+    const archive = archiver('zip', {
+      zlib: { level: 9 } // Sets the compression level.
+    });
+
+    return new Promise<void>((resolve, reject) => {
+      output.on('close', async () => {
+        console.log(`Backup created successfully: ${backupFileName} (${archive.pointer()} total bytes)`);
+        try {
+          await rotateBackups(); // Rotate after successful backup
+          resolve();
+        } catch (rotationError) {
+          console.error("Error during post-backup rotation:", rotationError);
+          // Decide if backup failure should depend on rotation failure
+          // For now, resolve even if rotation fails, as backup itself succeeded.
+          resolve();
+        }
+      });
+
+      // Handle stream finish event for better completion tracking
+      output.on('finish', () => {
+        console.log('Backup file stream finished writing.');
+      });
+
+      archive.on('warning', (err) => {
+        if (err.code === 'ENOENT') {
+          // Log specific warnings but don't necessarily reject
+          console.warn('Archiver warning (ENOENT):', err);
+        } else {
+          // Treat other warnings as potential issues, but maybe not fatal
+          console.warn('Archiver warning:', err);
+        }
+      });
+
+      archive.on('error', (err) => {
+        console.error('Archiver error:', err);
+        reject(err); // Reject the promise on critical archiver errors
+      });
+
+      // Pipe archive data to the file
+      archive.pipe(output);
+
+      // Append the entire data directory to the archive
+      // The second argument specifies the path prefix inside the zip file (false means root)
+      console.log(`Archiving directory: ${DATA_DIR}`);
+      archive.directory(DATA_DIR, false);
+
+      // Finalize the archive (writes the central directory)
+      console.log('Finalizing archive...');
+      archive.finalize().catch(err => {
+        // Catch potential errors during finalization
+        console.error('Error during archive finalization:', err);
+        reject(err);
+      });
+    });
+
+  } catch (error) {
+    console.error('Failed to run backup:', error);
+    // Rethrow or handle as appropriate for the scheduler
+    throw error;
+  }
+}

lib/client-helpers.ts

@@ -0,0 +1,36 @@
+// client helpers
+'use-client'
+
+import { useAtom } from 'jotai'
+import { useSession } from "next-auth/react"
+import { usersAtom } from './atoms'
+import { hasPermission } from './utils'
+
+export function useHelpers() {
+  const { data: session, status } = useSession()
+  const currentUserId = session?.user.id
+  const [usersData] = useAtom(usersAtom)
+  const currentUser = usersData.users.find((u) => u.id === currentUserId)
+  // detect iOS: https://stackoverflow.com/a/9039885
+  function iOS() {
+    return typeof navigator !== "undefined" && ([
+      'iPad Simulator',
+      'iPhone Simulator',
+      'iPod Simulator',
+      'iPad',
+      'iPhone',
+      'iPod',
+    ].includes(navigator.platform)
+    // iPad on iOS 13 detection
+    || (navigator.userAgent.includes("Mac") && "ontouchend" in document))
+  }  
+
+  return {
+    currentUserId,
+    currentUser,
+    usersData,
+    status,
+    hasPermission,
+    isIOS: iOS(),
+  }
+}

lib/constants.ts

@@ -1,6 +1,6 @@
 import { CheckSquare, Target } from "lucide-react"
 
-export const INITIAL_RECURRENCE_RULE = 'daily'
+export const INITIAL_RECURRENCE_RULE = 'every day'
 export const INITIAL_DUE = 'today'
 
 export const RECURRENCE_RULE_MAP: { [key: string]: string } = {
@@ -19,3 +19,18 @@ export const DUE_MAP: { [key: string]: string } = {
 
 export const HabitIcon = Target
 export const TaskIcon = CheckSquare;
+export const QUICK_DATES = [
+  { label: 'Today', value: 'today' },
+  { label: 'Tomorrow', value: 'tomorrow' },
+  { label: 'Monday', value: 'this monday' },
+  { label: 'Tuesday', value: 'this tuesday' },
+  { label: 'Wednesday', value: 'this wednesday' },
+  { label: 'Thursday', value: 'this thursday' },
+  { label: 'Friday', value: 'this friday' },
+  { label: 'Saturday', value: 'this saturday' },
+  { label: 'Sunday', value: 'this sunday' },
+] as const
+
+export const MAX_COIN_LIMIT = 9999
+
+export const DESKTOP_DISPLAY_ITEM_COUNT = 4

lib/env.server.ts

@@ -0,0 +1,32 @@
+import { z } from "zod"
+
+const zodEnv = z.object({
+  AUTH_SECRET: z.string(),
+  DEMO: z.string().optional(),
+})
+
+declare global {
+  interface ProcessEnv extends z.TypeOf<typeof zodEnv> {
+    AUTH_SECRET: string;
+    DEMO?: string;
+  }
+}
+
+export function init() {
+  try {
+    zodEnv.parse(process.env)
+  } catch (err) {
+    if (err instanceof z.ZodError) {
+      const { fieldErrors } = err.flatten()
+      const errorMessage = Object.entries(fieldErrors)
+        .map(([field, errors]) =>
+          errors ? `${field}: ${errors.join(", ")}` : field,
+        )
+        .join("\n ")
+
+      throw new Error(
+        `Missing environment variables:\n ${errorMessage}`,
+      )
+    }
+  }
+}

lib/exceptions.ts

@@ -0,0 +1,6 @@
+export class PermissionError extends Error {
+  constructor(message: string) {
+    super(message)
+    this.name = 'PermissionError'
+  }
+}

lib/scheduler.ts

@@ -0,0 +1,54 @@
+import cron from 'node-cron';
+import { runBackup } from './backup';
+
+let isSchedulerInitialized = false;
+
+export function initializeScheduler() {
+  if (isSchedulerInitialized) {
+    console.log('Scheduler already initialized.');
+    return;
+  }
+
+  console.log('Initializing scheduler...');
+
+  // Schedule backup to run daily at 2:00 AM server time
+  // Format: second minute hour day-of-month month day-of-week
+  // '0 2 * * *' means at minute 0 of hour 2 (2:00 AM) every day
+  const backupJob = cron.schedule('0 2 * * *', async () => {
+    console.log(`[${new Date().toISOString()}] Running scheduled daily backup task...`);
+    try {
+      await runBackup();
+      console.log(`[${new Date().toISOString()}] Scheduled backup task completed successfully.`);
+    } catch (err) {
+      console.error(`[${new Date().toISOString()}] Scheduled backup task failed:`, err);
+    }
+  }, {
+    scheduled: true,
+    // Consider adding timezone support later if needed, based on user settings
+    // timezone: "Your/Timezone"
+  });
+
+  console.log('Scheduler initialized. Daily backup scheduled for 2:00 AM server time.');
+  isSchedulerInitialized = true;
+
+  // Graceful shutdown handling (optional but recommended)
+  process.on('SIGTERM', () => {
+    console.log('SIGTERM signal received. Stopping scheduler...');
+    backupJob.stop();
+    // Add cleanup for other jobs if needed
+    process.exit(0);
+  });
+
+  process.on('SIGINT', () => {
+    console.log('SIGINT signal received. Stopping scheduler...');
+    backupJob.stop();
+    // Add cleanup for other jobs if needed
+    process.exit(0);
+  });
+
+  // --- Add other scheduled tasks here in the future ---
+  // Example:
+  // cron.schedule('* * * * *', () => {
+  //   console.log('Running every minute');
+  // });
+}

lib/server-helpers.ts

@@ -0,0 +1,40 @@
+import { auth } from '@/auth'
+import 'server-only'
+import { User, UserId } from './types'
+import { loadUsersData } from '@/app/actions/data'
+import { randomBytes, scryptSync } from 'crypto'
+
+export async function getCurrentUserId(): Promise<UserId | undefined> {
+  const session = await auth()
+  const user = session?.user
+  return user?.id
+}
+
+export async function getCurrentUser(): Promise<User | undefined> {
+  const currentUserId = await getCurrentUserId()
+  if (!currentUserId) {
+    return undefined
+  }
+  const usersData = await loadUsersData()
+  return usersData.users.find((u) => u.id === currentUserId)
+}
+export function saltAndHashPassword(password: string, salt?: string): string {
+  if (password.length === 0) throw new Error('Password must not be empty')
+  salt = salt || randomBytes(16).toString('hex')
+  const hash = scryptSync(password, salt, 64).toString('hex')
+  return `${salt}:${hash}`
+}
+
+export function verifyPassword(password?: string, storedHash?: string): boolean {
+  // if both password and storedHash is undefined, return true
+  if (!password && !storedHash) return true
+  // else if either password or storedHash is undefined, return false
+  if (!password || !storedHash) return false
+
+  // Split the stored hash into its salt and hash components
+  const [salt, hash] = storedHash.split(':')
+  // Hash the input password with the same salt
+  const newHash = saltAndHashPassword(password, salt).split(':')[1]
+  // Compare the new hash with the stored hash
+  return newHash === hash
+}

lib/startup-checks.test.ts

@@ -0,0 +1,205 @@
+import { describe, expect, test, beforeEach, mock } from 'bun:test'
+import { checkStartupPermissions } from './startup-checks'
+
+// Mock the fs promises module
+const mockStat = mock()
+const mockWriteFile = mock()
+const mockReadFile = mock()
+const mockUnlink = mock()
+
+mock.module('fs', () => ({
+  promises: {
+    stat: mockStat,
+    writeFile: mockWriteFile,
+    readFile: mockReadFile,
+    unlink: mockUnlink,
+  },
+}))
+
+describe('checkStartupPermissions', () => {
+  beforeEach(() => {
+    // Reset all mocks before each test
+    mockStat.mockReset()
+    mockWriteFile.mockReset()
+    mockReadFile.mockReset()
+    mockUnlink.mockReset()
+  })
+
+  test('should return success when directory exists and has proper permissions', async () => {
+    // Mock successful directory stat
+    mockStat.mockResolvedValue({
+      isDirectory: () => true,
+    })
+
+    // Mock successful file operations
+    mockWriteFile.mockResolvedValue(undefined)
+    mockReadFile.mockResolvedValue('permission-test')
+    mockUnlink.mockResolvedValue(undefined)
+
+    const result = await checkStartupPermissions()
+
+    expect(result).toEqual({ success: true })
+    expect(mockStat).toHaveBeenCalledWith('data')
+    expect(mockWriteFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'permission-test')
+    expect(mockReadFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'utf8')
+    expect(mockUnlink).toHaveBeenCalledWith('data/.habittrove-permission-test')
+  })
+
+  test('should return error when directory does not exist', async () => {
+    mockStat.mockRejectedValue(new Error('ENOENT: no such file or directory'))
+
+    const result = await checkStartupPermissions()
+
+    expect(result).toEqual({
+      success: false,
+      error: {
+        path: 'data',
+        message: 'Data directory \'data\' does not exist or is not accessible. Check volume mounts and permissions.',
+        type: 'writable_data_dir'
+      }
+    })
+    expect(mockStat).toHaveBeenCalledWith('data')
+    expect(mockWriteFile).not.toHaveBeenCalled()
+  })
+
+  test('should return error when path exists but is not a directory', async () => {
+    // Mock path exists but is a file, not directory
+    mockStat.mockResolvedValue({
+      isDirectory: () => false,
+    })
+
+    const result = await checkStartupPermissions()
+
+    expect(result).toEqual({
+      success: false,
+      error: {
+        path: 'data',
+        message: 'Path \'data\' exists but is not a directory. Please ensure the data directory is properly configured.',
+        type: 'writable_data_dir'
+      }
+    })
+    expect(mockStat).toHaveBeenCalledWith('data')
+    expect(mockWriteFile).not.toHaveBeenCalled()
+  })
+
+  test('should return error when write permission fails', async () => {
+    // Mock successful directory stat
+    mockStat.mockResolvedValue({
+      isDirectory: () => true,
+    })
+
+    // Mock write failure
+    mockWriteFile.mockRejectedValue(new Error('EACCES: permission denied'))
+
+    const result = await checkStartupPermissions()
+
+    expect(result).toEqual({
+      success: false,
+      error: {
+        path: 'data',
+        message: 'Insufficient read/write permissions for data directory \'data\'. Check file permissions and ownership.',
+        type: 'writable_data_dir'
+      }
+    })
+    expect(mockStat).toHaveBeenCalledWith('data')
+    expect(mockWriteFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'permission-test')
+    expect(mockReadFile).not.toHaveBeenCalled()
+  })
+
+  test('should return error when read permission fails', async () => {
+    // Mock successful directory stat and write
+    mockStat.mockResolvedValue({
+      isDirectory: () => true,
+    })
+    mockWriteFile.mockResolvedValue(undefined)
+
+    // Mock read failure
+    mockReadFile.mockRejectedValue(new Error('EACCES: permission denied'))
+
+    const result = await checkStartupPermissions()
+
+    expect(result).toEqual({
+      success: false,
+      error: {
+        path: 'data',
+        message: 'Insufficient read/write permissions for data directory \'data\'. Check file permissions and ownership.',
+        type: 'writable_data_dir'
+      }
+    })
+    expect(mockStat).toHaveBeenCalledWith('data')
+    expect(mockWriteFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'permission-test')
+    expect(mockReadFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'utf8')
+  })
+
+  test('should return error when read content does not match written content', async () => {
+    // Mock successful directory stat and write
+    mockStat.mockResolvedValue({
+      isDirectory: () => true,
+    })
+    mockWriteFile.mockResolvedValue(undefined)
+
+    // Mock read with different content
+    mockReadFile.mockResolvedValue('different-content')
+
+    const result = await checkStartupPermissions()
+
+    expect(result).toEqual({
+      success: false,
+      error: {
+        path: 'data',
+        message: 'Data integrity check failed in \'data\'. File system may be corrupted or have inconsistent behavior.',
+        type: 'writable_data_dir'
+      }
+    })
+    expect(mockStat).toHaveBeenCalledWith('data')
+    expect(mockWriteFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'permission-test')
+    expect(mockReadFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'utf8')
+    expect(mockUnlink).not.toHaveBeenCalled()
+  })
+
+  test('should return error when cleanup (unlink) fails', async () => {
+    // Mock successful directory stat, write, and read
+    mockStat.mockResolvedValue({
+      isDirectory: () => true,
+    })
+    mockWriteFile.mockResolvedValue(undefined)
+    mockReadFile.mockResolvedValue('permission-test')
+
+    // Mock cleanup failure
+    mockUnlink.mockRejectedValue(new Error('EACCES: permission denied'))
+
+    const result = await checkStartupPermissions()
+
+    // Should return error since cleanup failed and is part of the try-catch block
+    expect(result).toEqual({
+      success: false,
+      error: {
+        path: 'data',
+        message: 'Insufficient read/write permissions for data directory \'data\'. Check file permissions and ownership.',
+        type: 'writable_data_dir'
+      }
+    })
+    expect(mockStat).toHaveBeenCalledWith('data')
+    expect(mockWriteFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'permission-test')
+    expect(mockReadFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'utf8')
+    expect(mockUnlink).toHaveBeenCalledWith('data/.habittrove-permission-test')
+  })
+
+  test('should use correct file paths', async () => {
+    // Mock successful operations
+    mockStat.mockResolvedValue({
+      isDirectory: () => true,
+    })
+    mockWriteFile.mockResolvedValue(undefined)
+    mockReadFile.mockResolvedValue('permission-test')
+    mockUnlink.mockResolvedValue(undefined)
+
+    await checkStartupPermissions()
+
+    // Verify the correct paths are used
+    expect(mockStat).toHaveBeenCalledWith('data')
+    expect(mockWriteFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'permission-test')
+    expect(mockReadFile).toHaveBeenCalledWith('data/.habittrove-permission-test', 'utf8')
+    expect(mockUnlink).toHaveBeenCalledWith('data/.habittrove-permission-test')
+  })
+})

lib/startup-checks.ts

@@ -0,0 +1,73 @@
+import { promises as fs } from 'fs'
+import { join } from 'path'
+
+const DEFAULT_DATA_DIR = 'data'
+
+/**
+ * Checks startup permissions for the data directory
+ */
+interface StartupPermissionResult {
+  success: boolean
+  error?: { path: string; message: string; type?: 'writable_data_dir' }
+}
+
+export async function checkStartupPermissions(): Promise<StartupPermissionResult> {
+  const dirPath = DEFAULT_DATA_DIR
+
+  // Check if directory exists and is accessible
+  try {
+    const stats = await fs.stat(dirPath)
+    if (!stats.isDirectory()) {
+      return {
+        success: false,
+        error: {
+          path: dirPath,
+          message: `Path '${dirPath}' exists but is not a directory. Please ensure the data directory is properly configured.`,
+          type: 'writable_data_dir'
+        }
+      }
+    }
+  } catch (statError) {
+    return {
+      success: false,
+      error: {
+        path: dirPath,
+        message: `Data directory '${dirPath}' does not exist or is not accessible. Check volume mounts and permissions.`,
+        type: 'writable_data_dir'
+      }
+    }
+  }
+
+  // Test read/write permissions with a temporary file
+  const testFilePath = join(dirPath, '.habittrove-permission-test')
+  const testContent = 'permission-test'
+
+  try {
+    await fs.writeFile(testFilePath, testContent)
+    const readContent = await fs.readFile(testFilePath, 'utf8')
+    
+    if (readContent !== testContent) {
+      return {
+        success: false,
+        error: {
+          path: dirPath,
+          message: `Data integrity check failed in '${dirPath}'. File system may be corrupted or have inconsistent behavior.`,
+          type: 'writable_data_dir'
+        }
+      }
+    }
+
+    await fs.unlink(testFilePath)
+    return { success: true }
+
+  } catch (rwError) {
+    return {
+      success: false,
+      error: {
+        path: dirPath,
+        message: `Insufficient read/write permissions for data directory '${dirPath}'. Check file permissions and ownership.`,
+        type: 'writable_data_dir'
+      }
+    }
+  }
+}

lib/types.ts

@@ -1,3 +1,39 @@
+import { RRule } from "rrule"
+import { DateTime } from "luxon"
+
+export type UserId = string
+
+export type Permission = {
+  habit: {
+    write: boolean
+    interact: boolean
+  }
+  wishlist: {
+    write: boolean
+    interact: boolean
+  }
+  coins: {
+    write: boolean
+    interact: boolean
+  }
+}
+
+export type SessionUser = {
+  id: UserId
+}
+
+export type SafeUser = SessionUser & {
+  username: string
+  avatarPath?: string
+  permissions?: Permission[]
+  isAdmin?: boolean
+}
+
+export type User = SafeUser & {
+  password?: string // Optional: Allow users without passwords (e.g., initial setup)
+  lastNotificationReadTimestamp?: string // UTC ISO date string
+}
+
 export type Habit = {
   id: string
   name: string
@@ -8,6 +44,9 @@ export type Habit = {
   completions: string[] // Array of UTC ISO date strings
   isTask?: boolean // mark the habit as a task
   archived?: boolean // mark the habit as archived
+  pinned?: boolean // mark the habit as pinned
+  userIds?: UserId[]
+  drawing?: string // Optional JSON string of drawing data
 }
 
 
@@ -21,6 +60,8 @@ export type WishlistItemType = {
   archived?: boolean // mark the wishlist item as archived
   targetCompletions?: number // Optional field, infinity when unset
   link?: string // Optional URL to external resource
+  userIds?: UserId[]
+  drawing?: string // Optional JSON string of drawing data
 }
 
 export type TransactionType = 'HABIT_COMPLETION' | 'HABIT_UNDO' | 'WISH_REDEMPTION' | 'MANUAL_ADJUSTMENT' | 'TASK_COMPLETION' | 'TASK_UNDO';
@@ -33,6 +74,11 @@ export interface CoinTransaction {
   timestamp: string;
   relatedItemId?: string;
   note?: string;
+  userId?: UserId;
+}
+
+export interface UserData {
+  users: User[]
 }
 
 export interface HabitsData {
@@ -52,38 +98,63 @@ export interface WishlistData {
 }
 
 // Default value functions
-export const getDefaultHabitsData = (): HabitsData => ({
+export function getDefaultUsersData<UserData>(): UserData {
-  habits: []
+  return {
-});
+    users: [
+      {
+        id: crypto.randomUUID(),
+        username: 'admin',
+        // password: '', // No default password for admin initially? Or set a secure default?
+        isAdmin: true,
+        lastNotificationReadTimestamp: undefined, // Initialize as undefined
+      }
+    ]
+  } as UserData;
+};
 
+export function getDefaultHabitsData<HabitsData>(): HabitsData {
+  return { habits: [] } as HabitsData;
+}
 
-export const getDefaultCoinsData = (): CoinsData => ({
+export function getDefaultTasksData<TasksData>(): TasksData {
-  balance: 0,
+  return { tasks: [] } as TasksData;
-  transactions: []
+};
-});
 
-export const getDefaultWishlistData = (): WishlistData => ({
+export function getDefaultCoinsData<CoinsData>(): CoinsData {
-  items: []
+  return { balance: 0, transactions: [] } as CoinsData;
-});
+};
 
-export const getDefaultSettings = (): Settings => ({
+export function getDefaultWishlistData<WishlistData>(): WishlistData {
+  return { items: [] } as WishlistData;
+}
+
+export function getDefaultSettings<Settings>(): Settings {
+  return {
     ui: {
       useNumberFormatting: true,
       useGrouping: true,
     },
     system: {
       timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
-    weekStartDay: 1 // Monday
+      weekStartDay: 1, // Monday
+      autoBackupEnabled: true, // Add this line (default to true)
+      language: 'en', // Default language
     },
     profile: {}
-});
+  } as Settings;
+};
+
+export function getDefaultServerSettings<ServerSettings>(): ServerSettings {
+  return { isDemo: false } as ServerSettings;
+}
 
 // Map of data types to their default values
-export const DATA_DEFAULTS = {
+export const DATA_DEFAULTS: { [key: string]: <T>() => T } = {
   wishlist: getDefaultWishlistData,
   habits: getDefaultHabitsData,
   coins: getDefaultCoinsData,
   settings: getDefaultSettings,
+  auth: getDefaultUsersData,
 } as const;
 
 // Type for all possible data types
@@ -99,10 +170,12 @@ export type WeekDay = 0 | 1 | 2 | 3 | 4 | 5 | 6; // 0 = Sunday, 6 = Saturday
 export interface SystemSettings {
   timezone: string;
   weekStartDay: WeekDay;
+  autoBackupEnabled: boolean; // Add this line
+  language: string; // Add this line for language preference
 }
 
 export interface ProfileSettings {
-  avatarPath?: string;
+  avatarPath?: string; // deprecated
 }
 
 export interface Settings {
@@ -111,11 +184,29 @@ export interface Settings {
   profile: ProfileSettings;
 }
 
-export type ViewType = 'habits' | 'tasks'
+export type CompletionCache = {
+  [dateKey: string]: {  // dateKey format: "YYYY-MM-DD"
+    [habitId: string]: number  // number of completions on that date
+  }
+}
 
 export interface JotaiHydrateInitialValues {
   settings: Settings;
   coins: CoinsData;
   habits: HabitsData;
   wishlist: WishlistData;
+  users: UserData;
+  serverSettings: ServerSettings;
+}
+
+export interface ServerSettings {
+  isDemo: boolean
+}
+
+export type ParsedResultType = DateTime<true> | RRule | string | null // null if invalid
+
+// return rrule / datetime (machine-readable frequency), string (human-readable frequency), or null (invalid)
+export interface ParsedFrequencyResult {
+  message: string | null
+  result: ParsedResultType
 }

lib/utils.test.ts

@@ -1,26 +1,34 @@
-import { expect, test, describe, beforeAll, beforeEach, afterAll, spyOn } from "bun:test";
+import { expect, test, describe, beforeEach, spyOn } from "bun:test";
 import {
   cn,
   getTodayInTimezone,
   getNow,
-  getNowInMilliseconds,
   t2d,
   d2t,
   d2s,
-  d2sDate,
-  d2n,
   isSameDate,
   calculateCoinsEarnedToday,
   calculateTotalEarned,
   calculateTotalSpent,
   calculateCoinsSpentToday,
   isHabitDueToday,
-  isHabitDue
+  isHabitDue,
+  isTaskOverdue,
+  deserializeRRule,
+  serializeRRule,
+  convertHumanReadableFrequencyToMachineReadable,
+  convertMachineReadableFrequencyToHumanReadable,
+  prepareDataForHashing,
+  getUnsupportedRRuleReason,
+  roundToInteger,
+  generateCryptoHash
 } from './utils'
-import { CoinTransaction } from './types'
+import { CoinTransaction, ParsedResultType, Settings, HabitsData, CoinsData, WishlistData, UserData } from './types'
 import { DateTime } from "luxon";
-import { RRule } from 'rrule';
+import { getDefaultSettings, getDefaultHabitsData, getDefaultCoinsData, getDefaultWishlistData, getDefaultUsersData } from './types';
+import { RRule, Weekday } from 'rrule';
 import { Habit } from '@/lib/types';
+import { INITIAL_DUE } from './constants';
 
 describe('cn utility', () => {
   test('should merge class names correctly', () => {
@@ -31,6 +39,141 @@ describe('cn utility', () => {
   })
 })
 
+describe('roundToInteger', () => {
+  test('should round positive numbers correctly', () => {
+    expect(roundToInteger(10.123)).toBe(10);
+    expect(roundToInteger(10.5)).toBe(11);
+    expect(roundToInteger(10.75)).toBe(11);
+    expect(roundToInteger(10.49)).toBe(10);
+  });
+
+  test('should round negative numbers correctly', () => {
+    expect(roundToInteger(-10.123)).toBe(-10);
+    expect(roundToInteger(-10.5)).toBe(-10); // Math.round rounds -x.5 to -(x-1) e.g. -10.5 to -10
+    expect(roundToInteger(-10.75)).toBe(-11);
+    expect(roundToInteger(-10.49)).toBe(-10);
+  });
+
+  test('should handle zero correctly', () => {
+    expect(roundToInteger(0)).toBe(0);
+    expect(roundToInteger(0.0)).toBe(0);
+    expect(roundToInteger(-0.0)).toBe(-0);
+  });
+
+  test('should handle integers correctly', () => {
+    expect(roundToInteger(15)).toBe(15);
+    expect(roundToInteger(-15)).toBe(-15);
+  });
+});
+
+describe('getUnsupportedRRuleReason', () => {
+  test('should return message for HOURLY frequency', () => {
+    const rrule = new RRule({ freq: RRule.HOURLY });
+    expect(getUnsupportedRRuleReason(rrule)).toBe('Hourly frequency is not supported.');
+  });
+
+  test('should return message for MINUTELY frequency', () => {
+    const rrule = new RRule({ freq: RRule.MINUTELY });
+    expect(getUnsupportedRRuleReason(rrule)).toBe('Minutely frequency is not supported.');
+  });
+
+  test('should return message for SECONDLY frequency', () => {
+    const rrule = new RRule({ freq: RRule.SECONDLY });
+    expect(getUnsupportedRRuleReason(rrule)).toBe('Secondly frequency is not supported.');
+  });
+
+  test('should return message for DAILY frequency with interval > 1', () => {
+    const rrule = new RRule({ freq: RRule.DAILY, interval: 2 });
+    expect(getUnsupportedRRuleReason(rrule)).toBe('Daily frequency with intervals greater than 1 is not supported.');
+  });
+
+  test('should return null for DAILY frequency without interval', () => {
+    const rrule = new RRule({ freq: RRule.DAILY });
+    expect(getUnsupportedRRuleReason(rrule)).toBeNull();
+  });
+
+  test('should return null for DAILY frequency with interval = 1', () => {
+    const rrule = new RRule({ freq: RRule.DAILY, interval: 1 });
+    expect(getUnsupportedRRuleReason(rrule)).toBeNull();
+  });
+
+  test('should return null for WEEKLY frequency', () => {
+    const rrule = new RRule({ freq: RRule.WEEKLY, byweekday: [RRule.MO] }); // Added byweekday for validity
+    expect(getUnsupportedRRuleReason(rrule)).toBeNull();
+  });
+
+  test('should return null for MONTHLY frequency', () => {
+    const rrule = new RRule({ freq: RRule.MONTHLY, bymonthday: [1] }); // Added bymonthday for validity
+    expect(getUnsupportedRRuleReason(rrule)).toBeNull();
+  });
+
+  test('should return null for YEARLY frequency', () => {
+    const rrule = new RRule({ freq: RRule.YEARLY, bymonth: [1], bymonthday: [1] }); // Added bymonth/bymonthday for validity
+    expect(getUnsupportedRRuleReason(rrule)).toBeNull();
+  });
+
+  test('should return null for WEEKLY frequency with interval', () => {
+    // Weekly with interval is supported
+    const rrule = new RRule({ freq: RRule.WEEKLY, interval: 2, byweekday: [RRule.TU] }); // Added byweekday for validity
+    expect(getUnsupportedRRuleReason(rrule)).toBeNull();
+  });
+});
+
+describe('isTaskOverdue', () => {
+  const createTestHabit = (frequency: string, isTask = true, archived = false): Habit => ({
+    id: 'test-habit',
+    name: 'Test Habit',
+    description: '',
+    frequency,
+    coinReward: 10,
+    completions: [],
+    isTask,
+    archived
+  })
+
+  test('should return false for non-tasks', () => {
+    const habit = createTestHabit('FREQ=DAILY', false)
+    expect(isTaskOverdue(habit, 'UTC')).toBe(false)
+  })
+
+  test('should return false for archived tasks', () => {
+    const habit = createTestHabit('2024-01-01T00:00:00Z', true, true)
+    expect(isTaskOverdue(habit, 'UTC')).toBe(false)
+  })
+
+  test('should return false for future tasks', () => {
+    const tomorrow = DateTime.now().plus({ days: 1 }).toUTC().toISO()
+    const habit = createTestHabit(tomorrow)
+    expect(isTaskOverdue(habit, 'UTC')).toBe(false)
+  })
+
+  test('should return false for completed past tasks', () => {
+    const yesterday = DateTime.now().minus({ days: 1 }).toUTC().toISO()
+    const habit = {
+      ...createTestHabit(yesterday),
+      completions: [DateTime.now().toUTC().toISO()]
+    }
+    expect(isTaskOverdue(habit, 'UTC')).toBe(false)
+  })
+
+  test('should return true for incomplete past tasks', () => {
+    const yesterday = DateTime.now().minus({ days: 1 }).toUTC().toISO()
+    const habit = createTestHabit(yesterday)
+    expect(isTaskOverdue(habit, 'UTC')).toBe(true)
+  })
+
+  test('should handle timezone differences correctly', () => {
+    // Create a task due "tomorrow" in UTC
+    const tomorrow = DateTime.now().plus({ days: 1 }).toUTC().toISO()
+    const habit = createTestHabit(tomorrow)
+
+    // Test in various timezones
+    expect(isTaskOverdue(habit, 'UTC')).toBe(false)
+    expect(isTaskOverdue(habit, 'America/New_York')).toBe(false)
+    expect(isTaskOverdue(habit, 'Asia/Tokyo')).toBe(false)
+  })
+})
+
 describe('datetime utilities', () => {
   let fixedNow: DateTime;
   let currentDateIndex = 0;
@@ -148,13 +291,6 @@ describe('getNow', () => {
   })
 })
 
-describe('getNowInMilliseconds', () => {
-  test('should return current time in milliseconds', () => {
-    const now = DateTime.now().setZone('UTC')
-    expect(getNowInMilliseconds()).toBe(now.toMillis().toString())
-  })
-})
-
 describe('timestamp conversion utilities', () => {
   const testTimestamp = '2024-01-01T00:00:00.000Z';
   const testDateTime = DateTime.fromISO(testTimestamp);
@@ -178,16 +314,6 @@ describe('timestamp conversion utilities', () => {
     const customFormat = d2s({ dateTime: testDateTime, format: 'yyyy-MM-dd', timezone: 'utc' });
     expect(customFormat).toBe('2024-01-01')
   })
-
-  test('d2sDate should format DateTime as date string', () => {
-    const result = d2sDate({ dateTime: testDateTime });
-    expect(result).toBeString()
-  })
-
-  test('d2n should convert DateTime to milliseconds string', () => {
-    const result = d2n({ dateTime: testDateTime });
-    expect(result).toBe('1704067200000')
-  })
 })
 
 describe('isSameDate', () => {
@@ -452,13 +578,8 @@ describe('isHabitDueToday', () => {
 
   test('should return false for invalid recurrence rule', () => {
     const habit = testHabit('INVALID_RRULE')
-    // Mock console.error to prevent test output pollution
     const consoleSpy = spyOn(console, 'error').mockImplementation(() => { })
-
+    expect(isHabitDueToday({ habit, timezone: 'UTC' })).toBe(false)
-    // Expect the function to throw an error
-    expect(() => isHabitDueToday({ habit, timezone: 'UTC' })).toThrow()
-
-    consoleSpy.mockRestore()
   })
 })
 
@@ -571,7 +692,344 @@ describe('isHabitDue', () => {
     const habit = testHabit('INVALID_RRULE')
     const date = DateTime.fromISO('2024-01-01T00:00:00Z')
     const consoleSpy = spyOn(console, 'error').mockImplementation(() => { })
-    expect(() => isHabitDue({ habit, timezone: 'UTC', date })).toThrow()
+    expect(isHabitDue({ habit, timezone: 'UTC', date })).toBe(false)
-    consoleSpy.mockRestore()
   })
 })
+
+describe('deserializeRRule', () => {
+  test('should deserialize valid RRule string', () => {
+    const rruleStr = 'FREQ=DAILY;INTERVAL=1'
+    const rrule = deserializeRRule(rruleStr)
+    expect(rrule).toBeInstanceOf(RRule)
+    expect(rrule?.origOptions.freq).toBe(RRule.DAILY)
+    expect(rrule?.origOptions.interval).toBe(1)
+  })
+
+  test('should return null for invalid RRule string', () => {
+    const rruleStr = 'INVALID_RRULE_STRING'
+    const rrule = deserializeRRule(rruleStr)
+    expect(rrule).toBeNull()
+  })
+
+  test('should handle complex RRule strings', () => {
+    const rruleStr = 'FREQ=WEEKLY;BYDAY=MO,WE,FR;INTERVAL=2;COUNT=10'
+    const rrule = deserializeRRule(rruleStr)
+    expect(rrule).toBeInstanceOf(RRule)
+    expect(rrule?.origOptions.freq).toBe(RRule.WEEKLY)
+    expect(rrule?.origOptions.byweekday).toEqual([RRule.MO, RRule.WE, RRule.FR])
+    expect(rrule?.origOptions.interval).toBe(2)
+    expect(rrule?.origOptions.count).toBe(10)
+  })
+})
+
+describe('serializeRRule', () => {
+  test('should serialize RRule object to string', () => {
+    const rrule = new RRule({
+      freq: RRule.DAILY,
+      interval: 1
+    })
+    const rruleStr = serializeRRule(rrule)
+    // RRule adds DTSTART automatically if not provided, so we check the core parts
+    expect(rruleStr).toContain('FREQ=DAILY')
+    expect(rruleStr).toContain('INTERVAL=1')
+  })
+
+  test('should return "invalid" for null input', () => {
+    const rruleStr = serializeRRule(null)
+    expect(rruleStr).toBe('invalid')
+  })
+
+  test('should serialize complex RRule objects', () => {
+    const rrule = new RRule({
+      freq: RRule.WEEKLY,
+      byweekday: [RRule.MO, RRule.WE, RRule.FR],
+      interval: 2,
+      count: 10
+    })
+    const rruleStr = serializeRRule(rrule)
+    expect(rruleStr).toContain('FREQ=WEEKLY')
+    expect(rruleStr).toContain('BYDAY=MO,WE,FR')
+    expect(rruleStr).toContain('INTERVAL=2')
+    expect(rruleStr).toContain('COUNT=10')
+  })
+})
+
+describe('convertHumanReadableFrequencyToMachineReadable', () => {
+  const timezone = 'America/New_York'
+
+  beforeEach(() => {
+    // Set a fixed date for consistent relative date parsing
+    const mockDate = DateTime.fromISO('2024-07-15T10:00:00', { zone: timezone }) as DateTime<true>
+    DateTime.now = () => mockDate
+  })
+
+  // Non-recurring tests
+  test('should parse specific date (non-recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'July 16, 2024', timezone, isRecurring: false })
+    expect(message).toBeNull()
+    expect(result).toBeInstanceOf(DateTime)
+    expect((result as DateTime).toISODate()).toBe('2024-07-16')
+  })
+
+  test('should parse relative date "tomorrow" (non-recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'tomorrow', timezone, isRecurring: false })
+    expect(message).toBeNull()
+    expect(result).toBeInstanceOf(DateTime)
+    expect((result as DateTime).toISODate()).toBe('2024-07-16') // Based on mock date 2024-07-15
+  })
+
+  test('should parse relative date "next friday" (non-recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'next friday', timezone, isRecurring: false })
+    expect(message).toBeNull()
+    expect(result).toBeInstanceOf(DateTime)
+    // chrono-node interprets "next friday" from Mon July 15 as Fri July 26
+    expect((result as DateTime).toISODate()).toBe('2024-07-26')
+  })
+
+  test('should return null for invalid date string (non-recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'invalid date', timezone, isRecurring: false })
+    expect(result).toBeNull()
+    expect(message).toBe('Invalid due date.')
+  })
+
+  // Recurring tests
+  test('should parse "daily" (recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'daily', timezone, isRecurring: true })
+    expect(message).toBeNull()
+    expect(result).toBeInstanceOf(RRule)
+    expect((result as RRule).origOptions.freq).toBe(RRule.DAILY)
+  })
+
+  test('should parse "every week on Monday" (recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'every week on Monday', timezone, isRecurring: true })
+    expect(message).toBeNull()
+    expect(result).toBeInstanceOf(RRule)
+    expect((result as RRule).origOptions.freq).toBe(RRule.WEEKLY)
+    // RRule.fromText returns Weekday objects, check the weekday property
+    const byweekday = (result as RRule).origOptions.byweekday;
+    const weekdayValues = byweekday
+      ? (Array.isArray(byweekday)
+        ? byweekday.map(d => typeof d === 'number' ? d : (d as Weekday).weekday)
+        : [typeof byweekday === 'number' ? byweekday : (byweekday as Weekday).weekday])
+      : [];
+    expect(weekdayValues).toEqual([RRule.MO.weekday])
+  })
+
+  test('should parse "every month on the 15th" (recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'every month on the 15th', timezone, isRecurring: true })
+    expect(message).toBeNull()
+    expect(result).toBeInstanceOf(RRule)
+    expect((result as RRule).origOptions.freq).toBe(RRule.MONTHLY)
+    expect((result as RRule).origOptions.bymonthday).toEqual([15])
+  })
+
+  test('should parse "every year on Jan 1" (recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'every year on Jan 1', timezone, isRecurring: true })
+    expect(message).toBeNull()
+    expect(result).toBeInstanceOf(RRule)
+    expect((result as RRule).origOptions.freq).toBe(RRule.YEARLY)
+    // Note: RRule.fromText parses 'Jan 1' into bymonth/bymonthday
+    expect((result as RRule).origOptions.bymonth).toEqual([1])
+    // RRule.fromText might not reliably set bymonthday in origOptions for this text
+    // expect((result as RRule).origOptions.bymonthday).toEqual([1])
+  })
+
+  test('should return validation error for "every week" without day (recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'every week', timezone, isRecurring: true })
+    expect(result).toBeNull() // RRule.fromText might parse it, but our validation catches it
+    expect(message).toBe('Please specify day(s) of the week (e.g., "every week on Mon, Wed").')
+  })
+
+  test('should return validation error for "every month" without day/position (recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'every month', timezone, isRecurring: true })
+    expect(result).toBeNull() // RRule.fromText might parse it, but our validation catches it
+    expect(message).toBe('Please specify day of the month (e.g., "every month on the 15th") or position (e.g., "every month on the last Friday").')
+  })
+
+  test('should return null for invalid recurrence string (recurring)', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'invalid recurrence', timezone, isRecurring: true })
+    expect(result).toBeNull()
+    expect(message).toBe('Invalid recurrence rule.')
+  })
+
+  test('should return specific error for unsupported hourly frequency', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'every hour', timezone, isRecurring: true })
+    expect(result).toBeInstanceOf(RRule) // RRule parses it, but our validation catches it
+    expect(message).toBe('Hourly frequency is not supported.')
+  })
+
+  test('should return specific error for unsupported daily interval', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'every 2 days', timezone, isRecurring: true })
+    expect(result).toBeInstanceOf(RRule) // RRule parses it, but our validation catches it
+    expect(message).toBe('Daily frequency with intervals greater than 1 is not supported.')
+  })
+
+  test('should handle predefined constants like "weekdays"', () => {
+    const { result, message } = convertHumanReadableFrequencyToMachineReadable({ text: 'weekdays', timezone, isRecurring: true })
+    expect(message).toBeNull()
+    expect(result).toBeInstanceOf(RRule)
+    expect((result as RRule).origOptions.freq).toBe(RRule.WEEKLY)
+    // Check the weekday property of the Weekday objects
+    const weekdays = (result as RRule).origOptions.byweekday;
+    const weekdayNumbers = weekdays
+      ? (Array.isArray(weekdays)
+        ? weekdays.map(d => typeof d === 'number' ? d : (d as Weekday).weekday)
+        : [typeof weekdays === 'number' ? weekdays : (weekdays as Weekday).weekday])
+      : [];
+    expect(weekdayNumbers).toEqual([RRule.MO.weekday, RRule.TU.weekday, RRule.WE.weekday, RRule.TH.weekday, RRule.FR.weekday])
+  })
+})
+
+describe('convertMachineReadableFrequencyToHumanReadable', () => {
+  const timezone = 'America/New_York'
+
+  // Non-recurring tests
+  test('should format DateTime object (non-recurring)', () => {
+    const dateTime = DateTime.fromISO('2024-07-16T00:00:00', { zone: timezone }) as DateTime<true>
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: dateTime, isRecurRule: false, timezone })
+    // Expected format depends on locale, check for key parts
+    expect(humanReadable).toContain('Jul 16, 2024')
+    expect(humanReadable).toContain('Tue') // Tuesday
+  })
+
+  test('should format ISO string (non-recurring)', () => {
+    const isoString = '2024-07-16T00:00:00.000-04:00' // Example ISO string with offset
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: isoString, isRecurRule: false, timezone })
+    expect(humanReadable).toContain('Jul 16, 2024')
+    expect(humanReadable).toContain('Tue')
+  })
+
+  test('should return "Initial Due" for null frequency (non-recurring)', () => {
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: null, isRecurRule: false, timezone })
+    // Check against the imported constant value
+    expect(humanReadable).toBe(INITIAL_DUE)
+  })
+
+  // Recurring tests
+  test('should format RRule object (recurring)', () => {
+    const rrule = new RRule({ freq: RRule.DAILY })
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: rrule, isRecurRule: true, timezone })
+    // rrule.toText() returns "every day" for daily rules
+    expect(humanReadable).toBe('every day')
+  })
+
+  test('should format RRule string (recurring)', () => {
+    const rruleStr = 'FREQ=WEEKLY;BYDAY=MO,WE,FR'
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: rruleStr, isRecurRule: true, timezone })
+    expect(humanReadable).toBe('every week on Monday, Wednesday, Friday')
+  })
+
+  test('should return "invalid" for invalid RRule string (recurring)', () => {
+    const rruleStr = 'INVALID_RRULE'
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: rruleStr, isRecurRule: true, timezone })
+    expect(humanReadable).toBe('invalid')
+  })
+
+  test('should return "invalid" for null frequency (recurring)', () => {
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: null, isRecurRule: true, timezone })
+    expect(humanReadable).toBe('invalid')
+  })
+
+  test('should return "invalid" for unexpected type (recurring)', () => {
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: 123 as unknown as ParsedResultType, isRecurRule: true, timezone })
+    expect(humanReadable).toBe('invalid')
+  })
+
+  test('should return "invalid" for unexpected type (non-recurring)', () => {
+    const humanReadable = convertMachineReadableFrequencyToHumanReadable({ frequency: new RRule({ freq: RRule.DAILY }) as unknown as ParsedResultType, isRecurRule: false, timezone })
+    expect(humanReadable).toBe('invalid')
+  })
+})
+
+describe('freshness utilities', () => {
+  const mockSettings: Settings = getDefaultSettings<Settings>();
+  const mockHabits: HabitsData = getDefaultHabitsData<HabitsData>();
+  const mockCoins: CoinsData = getDefaultCoinsData<CoinsData>();
+  const mockWishlist: WishlistData = getDefaultWishlistData<WishlistData>();
+  const mockUsers: UserData = getDefaultUsersData<UserData>();
+
+  // Add a user to mockUsers for more realistic testing
+  mockUsers.users.push({
+    id: 'user-123',
+    username: 'testuser',
+    isAdmin: false,
+  });
+  mockHabits.habits.push({
+    id: 'habit-123',
+    name: 'Test Habit',
+    description: 'A habit for testing',
+    frequency: 'FREQ=DAILY',
+    coinReward: 10,
+    completions: [],
+    userIds: ['user-123']
+  });
+
+
+  describe('prepareDataForHashing', () => {
+    test('should produce a consistent string for the same data', () => {
+      const data1 = { settings: mockSettings, habits: mockHabits, coins: mockCoins, wishlist: mockWishlist, users: mockUsers };
+      const data2 = { settings: mockSettings, habits: mockHabits, coins: mockCoins, wishlist: mockWishlist, users: mockUsers }; // Identical data
+
+      const string1 = prepareDataForHashing(data1.settings, data1.habits, data1.coins, data1.wishlist, data1.users);
+      const string2 = prepareDataForHashing(data2.settings, data2.habits, data2.coins, data2.wishlist, data2.users);
+
+      expect(string1).toBe(string2);
+    });
+
+    test('should produce a different string if settings data changes', () => {
+      const string1 = prepareDataForHashing(mockSettings, mockHabits, mockCoins, mockWishlist, mockUsers);
+      const modifiedSettings = { ...mockSettings, system: { ...mockSettings.system, timezone: 'America/Chicago' } };
+      const string2 = prepareDataForHashing(modifiedSettings, mockHabits, mockCoins, mockWishlist, mockUsers);
+      expect(string1).not.toBe(string2);
+    });
+
+    test('should produce a different string if habits data changes', () => {
+      const string1 = prepareDataForHashing(mockSettings, mockHabits, mockCoins, mockWishlist, mockUsers);
+      const modifiedHabits = { ...mockHabits, habits: [...mockHabits.habits, { id: 'new-habit', name: 'New', description: '', frequency: 'FREQ=DAILY', coinReward: 5, completions: [] }] };
+      const string2 = prepareDataForHashing(mockSettings, modifiedHabits, mockCoins, mockWishlist, mockUsers);
+      expect(string1).not.toBe(string2);
+    });
+
+    test('should handle empty data consistently', () => {
+      const emptySettings = getDefaultSettings<Settings>();
+      const emptyHabits = getDefaultHabitsData<HabitsData>();
+      const emptyCoins = getDefaultCoinsData<CoinsData>();
+      const emptyWishlist = getDefaultWishlistData<WishlistData>();
+      const emptyUsers = getDefaultUsersData<UserData>();
+
+      const string1 = prepareDataForHashing(emptySettings, emptyHabits, emptyCoins, emptyWishlist, emptyUsers);
+      const string2 = prepareDataForHashing(emptySettings, emptyHabits, emptyCoins, emptyWishlist, emptyUsers);
+      expect(string1).toBe(string2);
+      expect(string1).toBeDefined();
+    });
+  });
+
+  describe('generateCryptoHash', () => {
+    test('should generate a SHA-256 hex string', async () => {
+      const dataString = 'test string';
+      const hash = await generateCryptoHash(dataString);
+      expect(hash).toMatch(/^[a-f0-9]{64}$/); // SHA-256 hex is 64 chars
+    });
+
+    test('should generate different hashes for different strings', async () => {
+      const hash1 = await generateCryptoHash('test string 1');
+      const hash2 = await generateCryptoHash('test string 2');
+      expect(hash1).not.toBe(hash2);
+    });
+
+    test('should generate the same hash for the same string', async () => {
+      const hash1 = await generateCryptoHash('consistent string');
+      const hash2 = await generateCryptoHash('consistent string');
+      expect(hash1).toBe(hash2);
+    });
+
+    // Test with a known SHA-256 value if possible, or ensure crypto.subtle.digest is available
+    // For "hello world", SHA-256 is "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"
+    test('should generate correct hash for a known string', async () => {
+      const knownString = "hello world";
+      const expectedHash = "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9";
+      const actualHash = await generateCryptoHash(knownString);
+      expect(actualHash).toBe(expectedHash);
+    });
+  });
+})

lib/utils.ts

@@ -1,10 +1,12 @@
+import { toast } from "@/hooks/use-toast"
+import { CoinsData, CoinTransaction, Freq, Habit, HabitsData, ParsedFrequencyResult, ParsedResultType, SafeUser, Settings, User, UserData, WishlistData } from '@/lib/types'
+import * as chrono from 'chrono-node'
 import { clsx, type ClassValue } from "clsx"
-import { twMerge } from "tailwind-merge"
 import { DateTime, DateTimeFormatOptions } from "luxon"
+import { Formats } from "next-intl"
 import { datetime, RRule } from 'rrule'
-import { Freq, Habit, CoinTransaction } from '@/lib/types'
+import { twMerge } from "tailwind-merge"
-import { DUE_MAP, INITIAL_RECURRENCE_RULE, RECURRENCE_RULE_MAP } from "./constants"
+import { DUE_MAP, INITIAL_DUE, RECURRENCE_RULE_MAP } from "./constants"
-import * as chrono from 'chrono-node';
 
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs))
@@ -16,6 +18,11 @@ export function getTodayInTimezone(timezone: string): string {
   return getISODate({ dateTime: now, timezone });
 }
 
+// round a number to the nearest integer
+export function roundToInteger(value: number): number {
+  return Math.round(value);
+}
+
 export function getISODate({ dateTime, timezone }: { dateTime: DateTime, timezone: string }): string {
   return dateTime.setZone(timezone).toISODate()!;
 }
@@ -25,18 +32,12 @@ export function getNow({ timezone = 'utc', keepLocalTime }: { timezone?: string,
   return DateTime.now().setZone(timezone, { keepLocalTime });
 }
 
-// get current time in epoch milliseconds
-export function getNowInMilliseconds() {
-  const now = getNow({});
-  return d2n({ dateTime: now });
-}
-
 // iso timestamp to datetime object, most for storage read
 export function t2d({ timestamp, timezone }: { timestamp: string; timezone: string }) {
   return DateTime.fromISO(timestamp).setZone(timezone);
 }
 
-// convert datetime object to iso timestamp, mostly for storage write
+// convert datetime object to iso timestamp, mostly for storage write (be sure to use default utc timezone when writing)
 export function d2t({ dateTime, timezone = 'utc' }: { dateTime: DateTime, timezone?: string }) {
   return dateTime.setZone(timezone).toISO()!;
 }
@@ -53,30 +54,11 @@ export function d2s({ dateTime, format, timezone }: { dateTime: DateTime, format
   return dateTime.setZone(timezone).toLocaleString(DateTime.DATETIME_MED);
 }
 
-// convert datetime object to date string, mostly for display
-export function d2sDate({ dateTime }: { dateTime: DateTime }) {
-  return dateTime.toLocaleString(DateTime.DATE_MED);
-}
-
-// convert datetime object to epoch milliseconds string, mostly for storage write
-export function d2n({ dateTime }: { dateTime: DateTime }) {
-  return dateTime.toMillis().toString();
-}
-
 // compare the date portion of two datetime objects (i.e. same year, month, day)
 export function isSameDate(a: DateTime, b: DateTime) {
   return a.hasSame(b, 'day');
 }
 
-export function normalizeCompletionDate(date: string, timezone: string): string {
-  // If already in ISO format, return as is
-  if (date.includes('T')) {
-    return date;
-  }
-  // Convert from yyyy-MM-dd to ISO format
-  return DateTime.fromFormat(date, 'yyyy-MM-dd', { zone: timezone }).toUTC().toISO()!;
-}
-
 export function getCompletionsForDate({
   habit,
   date,
@@ -183,41 +165,126 @@ export function calculateTransactionsToday(transactions: CoinTransaction[], time
   ).length;
 }
 
-export function getRRuleUTC(recurrenceRule: string) {
+// Enhanced validation for weekly/monthly rules
-  return RRule.fromString(recurrenceRule); // this returns UTC
+function validateRecurrenceRule(rrule: RRule | null): ParsedFrequencyResult {
+  if (!rrule) {
+    return { result: null, message: 'Invalid recurrence rule.' };
   }
 
-export function parseNaturalLanguageRRule(ruleText: string) {
+  const unsupportedReason = getUnsupportedRRuleReason(rrule);
-  ruleText = ruleText.trim()
+  if (unsupportedReason) {
-  if (RECURRENCE_RULE_MAP[ruleText]) {
+    return { result: rrule, message: unsupportedReason };
-    return RRule.fromString(RECURRENCE_RULE_MAP[ruleText])
   }
 
-  return RRule.fromText(ruleText)
+  const options = rrule.origOptions;
+
+  if (options.freq === RRule.WEEKLY && (!options.byweekday || !Array.isArray(options.byweekday) || options.byweekday.length === 0)) {
+    return { result: null, message: 'Please specify day(s) of the week (e.g., "every week on Mon, Wed").' };
   }
 
-export function parseRRule(ruleText: string) {
+  if (options.freq === RRule.MONTHLY &&
-  ruleText = ruleText.trim()
+    (!options.bymonthday || !Array.isArray(options.bymonthday) || options.bymonthday.length === 0) &&
-  if (RECURRENCE_RULE_MAP[ruleText]) {
+    (!options.bysetpos || !Array.isArray(options.bysetpos) || options.bysetpos.length === 0) && // Need to check bysetpos for rules like "last Friday"
-    return RRule.fromString(RECURRENCE_RULE_MAP[ruleText])
+    (!options.byweekday || !Array.isArray(options.byweekday) || options.byweekday.length === 0)) { // Need byweekday with bysetpos
+    return { result: null, message: 'Please specify day of the month (e.g., "every month on the 15th") or position (e.g., "every month on the last Friday").' };
   }
 
-  return RRule.fromString(ruleText)
+  return { result: rrule, message: null };
 }
 
-export function serializeRRule(rrule: RRule) {
+// Convert a human-readable frequency (recurring or non-recurring) into a machine-readable one
-  return rrule.toString()
+export function convertHumanReadableFrequencyToMachineReadable({ text, timezone, isRecurring = false }: { text: string, timezone: string, isRecurring?: boolean }): ParsedFrequencyResult {
-}
+  text = text.trim()
 
-export function parseNaturalLanguageDate({ text, timezone }: { text: string, timezone: string }) {
+  if (!isRecurring) {
     if (DUE_MAP[text]) {
       text = DUE_MAP[text]
     }
     const now = getNow({ timezone })
     const due = chrono.parseDate(text, { instant: now.toJSDate(), timezone })
-  if (!due) throw Error('invalid rule')
+    if (!due) return { result: null, message: 'Invalid due date.' }
-  // return d2s({ dateTime: DateTime.fromJSDate(due), timezone, format: DateTime.DATE_MED_WITH_WEEKDAY })
+    const result = due ? DateTime.fromJSDate(due).setZone(timezone) : null
-  return DateTime.fromJSDate(due).setZone(timezone)
+    return { message: null, result: result ? (result.isValid ? result : null) : null }
+  }
+
+  let rrule: RRule | null
+  if (RECURRENCE_RULE_MAP[text]) {
+    rrule = deserializeRRule(RECURRENCE_RULE_MAP[text])
+  } else if (text.toLowerCase() === 'weekdays') {
+    // Handle 'weekdays' specifically if not in the map
+    rrule = new RRule({
+      freq: RRule.WEEKLY,
+      byweekday: [RRule.MO, RRule.TU, RRule.WE, RRule.TH, RRule.FR]
+    });
+  } else {
+    try {
+      rrule = RRule.fromText(text)
+    } catch (error) {
+      rrule = null
+    }
+  }
+  return validateRecurrenceRule(rrule);
+}
+
+// convert a machine-readable rrule **string** to an rrule object
+export function deserializeRRule(rruleStr: string): RRule | null {
+  try {
+    return RRule.fromString(rruleStr);
+  } catch (error) {
+    return null;
+  }
+}
+
+// convert a machine-readable rrule **object** to an rrule string
+export function serializeRRule(rrule: RRule | null): string {
+  if (!rrule) return 'invalid'; // Handle null case explicitly
+  return rrule.toString()
+}
+
+// Convert a machine-readable frequency (recurring or non-recurring) into a human-readable one
+export function convertMachineReadableFrequencyToHumanReadable({
+  frequency,
+  isRecurRule,
+  timezone
+}: {
+  frequency: ParsedResultType,
+  isRecurRule: boolean,
+  timezone: string
+}): string {
+  if (isRecurRule) {
+    if (!frequency) {
+      return 'invalid'; // Handle null/undefined for recurring rules
+    }
+    if (frequency instanceof RRule) {
+      return frequency.toText();
+    } else if (typeof frequency === "string") {
+      const parsedResult = deserializeRRule(frequency);
+      return parsedResult?.toText() || 'invalid';
+    } else {
+      return 'invalid';
+    }
+  } else {
+    // Handle non-recurring frequency
+    if (!frequency) {
+      // Use the imported constant for initial due date text
+      return INITIAL_DUE;
+    }
+    if (typeof frequency === 'string') {
+      return d2s({
+        dateTime: t2d({ timestamp: frequency, timezone: timezone }),
+        timezone: timezone,
+        format: DateTime.DATE_MED_WITH_WEEKDAY
+      });
+    } else if (frequency instanceof DateTime) {
+      return d2s({
+        dateTime: frequency,
+        timezone: timezone,
+        format: DateTime.DATE_MED_WITH_WEEKDAY
+      });
+    } else {
+      return 'invalid';
+    }
+  }
 }
 
 export function isHabitDue({
@@ -229,17 +296,24 @@ export function isHabitDue({
   timezone: string
   date: DateTime
 }): boolean {
+  // handle task
   if (habit.isTask) {
     // For tasks, frequency is stored as a UTC ISO timestamp
     const taskDueDate = t2d({ timestamp: habit.frequency, timezone })
     return isSameDate(taskDueDate, date);
   }
+
+  // handle habit
+  if (habit.archived) {
+    return false
+  }
+
   const startOfDay = date.setZone(timezone).startOf('day')
   const endOfDay = date.setZone(timezone).endOf('day')
 
   const ruleText = habit.frequency
-  const rrule = parseRRule(ruleText)
+  const rrule = deserializeRRule(ruleText)
-
+  if (!rrule) return false
   rrule.origOptions.tzid = timezone
   rrule.options.tzid = rrule.origOptions.tzid
   rrule.origOptions.dtstart = datetime(startOfDay.year, startOfDay.month, startOfDay.day, startOfDay.hour, startOfDay.minute, startOfDay.second)
@@ -253,6 +327,17 @@ export function isHabitDue({
   return startOfDay <= t && t <= endOfDay
 }
 
+export function isHabitCompleted(habit: Habit, timezone: string): boolean {
+  return getCompletionsForToday({ habit, timezone: timezone }) >= (habit.targetCompletions || 1)
+}
+
+export function isTaskOverdue(habit: Habit, timezone: string): boolean {
+  if (!habit.isTask || habit.archived) return false
+  const dueDate = t2d({ timestamp: habit.frequency, timezone }).startOf('day')
+  const now = getNow({ timezone }).startOf('day')
+  return dueDate < now && !isHabitCompleted(habit, timezone)
+}
+
 export function isHabitDueToday({
   habit,
   timezone
@@ -269,17 +354,46 @@ export function getHabitFreq(habit: Habit): Freq {
     // don't support recurring task yet
     return 'daily'
   }
-  const rrule = parseRRule(habit.frequency)
+  const rrule = RRule.fromString(habit.frequency)
   const freq = rrule.origOptions.freq
   switch (freq) {
     case RRule.DAILY: return 'daily'
     case RRule.WEEKLY: return 'weekly'
     case RRule.MONTHLY: return 'monthly'
     case RRule.YEARLY: return 'yearly'
-    default: throw new Error(`Invalid frequency: ${freq}`)
+
+    default:
+      console.error(`Invalid frequency: ${freq} (habit: ${habit.id} ${habit.name}) (rrule: ${rrule.toString()}). Defaulting to daily`)
+      return 'daily'
   }
 }
 
+/**
+ * Checks if an RRule is unsupported and returns the reason.
+ * @param rrule The RRule object to check.
+ * @returns A string message explaining why the rule is unsupported, or null if it's supported.
+ */
+export function getUnsupportedRRuleReason(rrule: RRule): string | null {
+  const freq = rrule.origOptions.freq;
+  const interval = rrule.origOptions.interval || 1; // RRule defaults interval to 1
+
+  if (freq === RRule.HOURLY) {
+    return 'Hourly frequency is not supported.';
+  }
+  if (freq === RRule.MINUTELY) {
+    return 'Minutely frequency is not supported.';
+  }
+  if (freq === RRule.SECONDLY) {
+    return 'Secondly frequency is not supported.';
+  }
+  if (freq === RRule.DAILY && interval > 1) {
+    return 'Daily frequency with intervals greater than 1 is not supported.';
+  }
+
+  return null; // Rule is supported
+}
+
+
 // play sound (client side only, must be run in browser)
 export const playSound = (soundPath: string = '/sounds/timer-end.wav') => {
   const audio = new Audio(soundPath)
@@ -297,3 +411,101 @@ export const openWindow = (url: string): boolean => {
   }
   return true
 }
+
+export function hasPermission(
+  user: User | undefined,
+  resource: 'habit' | 'wishlist' | 'coins',
+  action: 'write' | 'interact'
+): boolean {
+  if (!user || !user.permissions) {
+    return false;
+  }
+  // If user is admin, they have all permissions.
+  if (user.isAdmin) {
+    return true;
+  }
+  // Otherwise, check specific permissions.
+  return user.permissions.some(permission => {
+    switch (resource) {
+      case 'habit':
+        return permission.habit[action]
+      case 'wishlist':
+        return permission.wishlist[action]
+      case 'coins':
+        return permission.coins[action]
+      default:
+        return false
+    }
+  })
+}
+
+/**
+ * Prepares a consistent string representation of the data for hashing.
+ * It combines all relevant data pieces into a single object and then stringifies it stably.
+ */
+export function prepareDataForHashing(
+  settings: Settings,
+  habits: HabitsData,
+  coins: CoinsData,
+  wishlist: WishlistData,
+  users: UserData
+): string {
+  return JSON.stringify({
+    settings,
+    habits,
+    coins,
+    wishlist,
+    users,
+  });
+}
+
+/**
+ * Generates a SHA-256 hash for a given string using the Web Crypto API.
+ * This function is suitable for both client-side and server-side (Node.js 19+) environments.
+ * @param dataString The string to hash.
+ * @returns A promise that resolves to the hex string of the hash.
+ */
+export async function generateCryptoHash(dataString: string): Promise<string | null> {
+  try {
+    const encoder = new TextEncoder();
+    const data = encoder.encode(dataString);
+    // globalThis.crypto should be available in modern browsers and Node.js (v19+)
+    // For Node.js v15-v18, you might need: const { subtle } = require('node:crypto').webcrypto;
+    const hashBuffer = await globalThis.crypto.subtle.digest('SHA-256', data);
+    const hashArray = Array.from(new Uint8Array(hashBuffer));
+    // Convert buffer to hex string
+    const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
+    return hashHex;
+  } catch (error) {
+    console.error(`Failed to generate hash: ${error}`);
+    return null;
+  }
+}
+
+export function handlePermissionCheck(
+  user: User | SafeUser | undefined,
+  resource: 'habit' | 'wishlist' | 'coins',
+  action: 'write' | 'interact',
+  tCommon: (key: string, values?: Record<string, string | number | Date> | undefined, formats?: Formats | undefined) => string
+): boolean {
+
+  if (!user) {
+    toast({
+      title: tCommon("authenticationRequiredTitle"),
+      description: tCommon("authenticationRequiredDescription"),
+      variant: "destructive",
+    })
+    return false
+  }
+
+  if (!hasPermission(user, resource, action)) {
+    toast({
+      title: tCommon("permissionDeniedTitle"),
+      description: tCommon("permissionDeniedDescription", { action, resource }),
+      variant: "destructive",
+    })
+    return false
+  }
+
+  return true
+}

lib/zod.ts

@@ -0,0 +1,17 @@
+import { literal, object, string } from "zod"
+
+export const usernameSchema = string()
+  .min(3, "Username must be at least 3 characters")
+  .max(20, "Username must be less than 20 characters")
+  .regex(/^[a-zA-Z0-9]+$/, "Username must be alphanumeric")
+
+export const passwordSchema = string()
+  .min(4, "Password must be more than 4 characters")
+  .max(32, "Password must be less than 32 characters")
+  .optional()
+  .or(literal(''))
+
+export const signInSchema = object({
+  username: usernameSchema,
+  password: passwordSchema,
+})