Merge Tag 'v0.2.30'

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

.gitignore

@@ -46,5 +46,6 @@ next-env.d.ts
 Budfile
 certificates
 /backups/*
+CLAUDE.md
 
 CHANGELOG.md.tmp

.husky/pre-commit

@@ -1 +1,11 @@
+#!/bin/sh
+# Check that package.json version exists in CHANGELOG.md
+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 lint && npm run test

CHANGELOG.md

@@ -1,5 +1,57 @@
 # Changelog
 
+## Version 0.2.30
+
+### Fixed
+
+* Security: Updated Next.js from 15.2.3 to 15.5.7 to address CVE-2025-55182 (https://github.com/vercel/next.js/security/advisories/GHSA-9qr9-h5gf-34mp)
+
+## 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

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

@@ -1,18 +1,17 @@
 # syntax=docker.io/docker/dockerfile:1
 
-FROM 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 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; \
@@ -26,32 +25,28 @@ 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
-FROM base AS runner
+# Production image - use target platform
+FROM node:22-alpine AS runner
 WORKDIR /app
 
 ENV NODE_ENV=production
 ENV NEXT_TELEMETRY_DISABLED=1
 
-RUN addgroup --system --gid 1001 nodejs
-RUN adduser --system --uid 1001 nextjs
-
-# Create data and backups directories and set permissions
-RUN mkdir -p /app/data /app/backups \
-    && chown nextjs:nodejs /app/data /app/backups
+RUN addgroup --system --gid 1001 nodejs && \
+    adduser --system --uid 1001 nextjs && \
+    mkdir -p /app/data /app/backups && \
+    chown nextjs:nodejs /app/data /app/backups
 
 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
 

README.md

@@ -2,8 +2,6 @@
 
 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
 
 I generally try to keep the `main` branch up to date with upstream features, merging tagged versions and mapping them to `<upstream-version>.0`.
@@ -26,8 +24,9 @@ Differences (as of writing) are:
 - 🏆 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)
-- 🌍 Multi-language support (English, Español, Deutsch, Français, Русский, 简体中文, 日本語)
+- 🌍 Multi-language support (English, Español, Català, Deutsch, Français, Русский, 简体中文, 한국어, 日本語)
 - 🌙 Dark mode support
 - 📲 Progressive Web App (PWA) support
 - 💾 Automatic daily backups with rotation

app/actions/data.ts

@@ -21,7 +21,7 @@ import {
   WishlistData,
   WishlistItemType
 } from '@/lib/types';
-import { d2t, generateCryptoHash, getNow, prepareDataForHashing, uuid } from '@/lib/utils';
+import { d2t, generateCryptoHash, getNow, prepareDataForHashing } from '@/lib/utils';
 import { signInSchema } from '@/lib/zod';
 import fs from 'fs/promises';
 import _ from 'lodash';
@@ -33,21 +33,6 @@ type ResourceType = 'habit' | 'wishlist' | 'coins'
 type ActionType = 'write' | 'interact'
 
 
-async function verifyPermission(
-  resource: ResourceType,
-  action: ActionType
-): Promise<void> {
-  // const user = await getCurrentUser()
-
-  // if (!user) throw new PermissionError('User not authenticated')
-  // if (user.isAdmin) return // Admins bypass permission checks
-
-  // if (!checkPermission(user.permissions, resource, action)) {
-  //   throw new PermissionError(`User does not have ${action} permission for ${resource}`)
-  // }
-  return
-}
-
 function getDefaultData<T>(type: DataType): T {
   return DATA_DEFAULTS[type]() as T;
 }
@@ -91,7 +76,7 @@ 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
     }
@@ -126,11 +111,13 @@ async function saveData<T>(type: DataType, data: T): Promise<void> {
  */
 async function calculateServerFreshnessToken(): Promise<string | null> {
   try {
-    const settings = await loadSettings();
-    const habits = await loadHabitsData();
-    const coins = await loadCoinsData();
-    const wishlist = await loadWishlistData();
-    const users = await loadUsersData();
+    const [settings, habits, coins, wishlist, users] = await Promise.all([
+      loadSettings(),
+      loadHabitsData(),
+      loadCoinsData(),
+      loadWishlistData(),
+      loadUsersData()
+    ]);
 
     const dataString = prepareDataForHashing(
       settings,
@@ -139,8 +126,7 @@ async function calculateServerFreshnessToken(): Promise<string | null> {
       wishlist,
       users
     );
-    const serverToken = await generateCryptoHash(dataString);
-    return serverToken;
+    return generateCryptoHash(dataString);
   } catch (error) {
     console.error("Error calculating server freshness token:", error);
     throw error;
@@ -150,7 +136,7 @@ async function calculateServerFreshnessToken(): Promise<string | null> {
 // Wishlist specific functions
 export async function loadWishlistData(): Promise<WishlistData> {
   const user = await getCurrentUser()
-  if (!user) return getDefaultWishlistData()
+  if (!user) return getDefaultWishlistData<WishlistData>()
 
   const data = await loadData<WishlistData>('wishlist')
   return {
@@ -165,7 +151,6 @@ export async function loadWishlistItems(): Promise<WishlistItemType[]> {
 }
 
 export async function saveWishlistItems(data: WishlistData): Promise<void> {
-  await verifyPermission('wishlist', 'write')
   const user = await getCurrentUser()
 
   data.items = data.items.map(wishlist => ({
@@ -188,17 +173,14 @@ export async function saveWishlistItems(data: WishlistData): Promise<void> {
 // Habits specific functions
 export async function loadHabitsData(): Promise<HabitsData> {
   const user = await getCurrentUser()
-  if (!user) return getDefaultHabitsData()
+  if (!user) return getDefaultHabitsData<HabitsData>()
   const data = await loadData<HabitsData>('habits')
   return {
-    ...data,
     habits: data.habits.filter(x => user.isAdmin || x.userIds?.includes(user.id))
   }
 }
 
 export async function saveHabitsData(data: HabitsData): Promise<void> {
-  await verifyPermission('habit', 'write')
-
   const user = await getCurrentUser()
   // Create clone of input data
   const newData = _.cloneDeep(data)
@@ -210,7 +192,7 @@ export async function saveHabitsData(data: HabitsData): Promise<void> {
   }))
 
   if (!user?.isAdmin) {
-    const existingData = await loadData<HabitsData>('habits')
+    const existingData = await loadHabitsData();
     const existingHabits = existingData.habits.filter(x => user?.id && !x.userIds?.includes(user?.id))
     newData.habits = [
       ...existingHabits,
@@ -226,14 +208,14 @@ export async function saveHabitsData(data: HabitsData): Promise<void> {
 export async function loadCoinsData(): Promise<CoinsData> {
   try {
     const user = await getCurrentUser()
-    if (!user) return getDefaultCoinsData()
+    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 getDefaultCoinsData()
+    return getDefaultCoinsData<CoinsData>()
   }
 }
 
@@ -273,11 +255,10 @@ export async function addCoins({
   note?: string
   userId?: string
 }): Promise<CoinsData> {
-  await verifyPermission('coins', type === 'MANUAL_ADJUSTMENT' ? 'write' : 'interact')
   const currentUser = await getCurrentUser()
   const data = await loadCoinsData()
   const newTransaction: CoinTransaction = {
-    id: uuid(),
+    id: crypto.randomUUID(),
     amount,
     type,
     description,
@@ -297,7 +278,7 @@ export async function addCoins({
 }
 
 export async function loadSettings(): Promise<Settings> {
-  const defaultSettings = getDefaultSettings()
+  const defaultSettings = getDefaultSettings<Settings>()
 
   try {
     const user = await getCurrentUser()
@@ -328,11 +309,10 @@ export async function removeCoins({
   note?: string
   userId?: string
 }): Promise<CoinsData> {
-  await verifyPermission('coins', type === 'MANUAL_ADJUSTMENT' ? 'write' : 'interact')
   const currentUser = await getCurrentUser()
   const data = await loadCoinsData()
   const newTransaction: CoinTransaction = {
-    id: uuid(),
+    id: crypto.randomUUID(),
     amount: -amount,
     type,
     description,
@@ -390,7 +370,7 @@ export async function loadUsersData(): Promise<UserData> {
   try {
     return await loadData<UserData>('auth')
   } catch {
-    return getDefaultUsersData()
+    return getDefaultUsersData<UserData>()
   }
 }
 
@@ -434,7 +414,7 @@ export async function createUser(formData: FormData): Promise<User> {
 
 
   const newUser: User = {
-    id: uuid(),
+    id: crypto.randomUUID(),
     username,
     password: hashedPassword,
     permissions,

app/debug/layout.tsx

@@ -1,7 +1,7 @@
 import { ReactNode } from "react";
 
 export default function Debug({children}: {children: ReactNode}) {
-  if (process.env.NODE_ENV !== 'development') return null
+  if (process.env.NODE_ENV !== 'development') return <></>
   return (
     <div className="debug">
       {children}

app/layout.tsx

@@ -12,20 +12,12 @@ import { Suspense } from 'react'
 import { loadCoinsData, loadHabitsData, loadServerSettings, loadSettings, loadUsersData, loadWishlistData } from './actions/data'
 import './globals.css'
 
-// Inter (clean, modern, excellent readability)
-// const inter = Inter({
-//   subsets: ['latin'],
-//   weight: ['400', '500', '600', '700']
-// })
-
 // 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',

app/settings/page.tsx

@@ -14,11 +14,14 @@ 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 { useSession } from 'next-auth/react'; // signOut removed
+
 import { useTranslations } from 'next-intl';
-import { useRouter } from 'next/navigation';
 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
 
@@ -38,7 +41,7 @@ export default function SettingsPage() {
 
   // handleDeleteAccount function removed
 
-  if (!settings) return null
+  if (!settings) return <></>
 
   return (
     <>
@@ -227,10 +230,12 @@ export default function SettingsPage() {
                 {/* Add more languages as needed */}
                 <option value="en">English</option>
                 <option value="es">Español</option>
+                <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>

components/AddEditHabitModal.tsx

@@ -12,11 +12,13 @@ import { INITIAL_DUE, INITIAL_RECURRENCE_RULE, MAX_COIN_LIMIT, QUICK_DATES } fro
 import { Habit } from '@/lib/types'
 import { convertHumanReadableFrequencyToMachineReadable, convertMachineReadableFrequencyToHumanReadable, d2t, serializeRRule } from '@/lib/utils'
 import { useAtom } from 'jotai'
-import { Zap } from 'lucide-react'
+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
 
@@ -48,6 +50,8 @@ export default function AddEditHabitModal({ onClose, onSave, habit, isTask }: Ad
   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) {
@@ -82,7 +86,8 @@ export default function AddEditHabitModal({ onClose, onSave, habit, isTask }: Ad
       targetCompletions: targetCompletions > 1 ? targetCompletions : undefined,
       completions: habit?.completions || [],
       frequency: getFrequencyUpdate(),
-      userIds: selectedUserIds.length > 0 ? selectedUserIds.concat(currentUser?.id || []) : (currentUser && [currentUser.id])
+      userIds: selectedUserIds.length > 0 ? selectedUserIds.concat(currentUser?.id || []) : (currentUser && [currentUser.id]),
+      drawing: drawing && drawing !== '[]' ? drawing : undefined
     })
   }
 
@@ -91,7 +96,11 @@ export default function AddEditHabitModal({ onClose, onSave, habit, isTask }: Ad
   return (
     <>
       <ModalOverlay />
-      <Dialog open={true} onOpenChange={onClose} modal={false}>
+      <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>
@@ -123,7 +132,7 @@ export default function AddEditHabitModal({ onClose, onSave, habit, isTask }: Ad
                     }}
                   />
                 </div>
-              </div>ohsimpson
+              </div>
               <div className="grid grid-cols-4 items-center gap-4">
                 <Label htmlFor="description" className="text-right">
                   {t('descriptionLabel')}
@@ -275,6 +284,38 @@ export default function AddEditHabitModal({ onClose, onSave, habit, isTask }: Ad
                   </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">
@@ -318,6 +359,13 @@ export default function AddEditHabitModal({ onClose, onSave, habit, isTask }: Ad
           </form>
         </DialogContent>
       </Dialog>
+      <DrawingModal
+        isOpen={isDrawingModalOpen}
+        onClose={() => setIsDrawingModalOpen(false)}
+        onSave={(drawingData) => setDrawing(drawingData)}
+        initialDrawing={drawing}
+        title={name}
+      />
     </>
   )
 }

components/AddEditWishlistItemModal.tsx

@@ -7,8 +7,11 @@ import { currentUserAtom, usersAtom } from '@/lib/atoms'
 import { MAX_COIN_LIMIT } from '@/lib/constants'
 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'
@@ -38,6 +41,8 @@ export default function AddEditWishlistItemModal({
   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) {
@@ -46,12 +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])
@@ -100,7 +107,8 @@ export default function AddEditWishlistItemModal({
       coinCost,
       targetCompletions: targetCompletions || undefined,
       link: link.trim() || undefined,
-      userIds: selectedUserIds.length > 0 ? selectedUserIds.concat(currentUser?.id || []) : (currentUser && [currentUser.id])
+      userIds: selectedUserIds.length > 0 ? selectedUserIds.concat(currentUser?.id || []) : (currentUser && [currentUser.id]),
+      drawing: drawing && drawing !== '[]' ? drawing : undefined
     }
 
     if (editingItem) {
@@ -116,7 +124,11 @@ export default function AddEditWishlistItemModal({
   return (
     <>
       <ModalOverlay />
-      <Dialog open={true} onOpenChange={handleClose} modal={false}>
+      <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 ? t('editTitle') : t('addTitle')}</DialogTitle>
@@ -267,6 +279,38 @@ 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">
@@ -306,6 +350,13 @@ export default function AddEditWishlistItemModal({
           </form>
         </DialogContent>
       </Dialog>
+      <DrawingModal
+        isOpen={isDrawingModalOpen}
+        onClose={() => setIsDrawingModalOpen(false)}
+        onSave={(drawingData) => setDrawing(drawingData)}
+        initialDrawing={drawing}
+        title={name}
+      />
     </>
   )
 }

components/CoinsManager.tsx

@@ -3,6 +3,7 @@
 import { FormattedNumber } from '@/components/FormattedNumber'
 import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar'
 import { Button } from '@/components/ui/button'
+
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
 import { Input } from '@/components/ui/input'
 import { useCoins } from '@/hooks/useCoins'

components/DailyOverview.tsx

@@ -14,6 +14,7 @@ import {
 } 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'
@@ -27,7 +28,7 @@ import ConfirmDialog from './ConfirmDialog'
 import { HabitContextMenuItems } from './HabitContextMenuItems'
 import Linkify from './linkify'
 import { Button } from './ui/button'
-import { DESKTOP_DISPLAY_ITEM_COUNT } from '@/lib/constants'
+import DrawingDisplay from './DrawingDisplay'
 
 interface UpcomingItemsProps {
   habits: Habit[]
@@ -246,6 +247,16 @@ const ItemSection = ({
                               {habit.name}
                             </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>
@@ -458,9 +469,19 @@ export default function DailyOverview({
                               )}
                             >
                               <div className="flex items-center justify-between mb-2">
-                                <span className="text-sm">
-                                  <Linkify>{item.name}</Linkify>
-                                </span>
+                                <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",

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/HabitItem.tsx

@@ -1,9 +1,8 @@
-import { Button } from '@/components/ui/button'
 import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from '@/components/ui/card'
 import {
   DropdownMenu,
   DropdownMenuContent,
-  DropdownMenuTrigger
+  DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu'
 import { useHabits } from '@/hooks/useHabits'
 import { currentUserAtom, settingsAtom, usersAtom } from '@/lib/atoms'
@@ -14,8 +13,10 @@ 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
@@ -24,13 +25,13 @@ interface HabitItemProps {
 }
 
 const renderUserAvatars = (habit: Habit, currentUser: User | null, usersData: { users: User[] }) => {
-  if (!habit.userIds || habit.userIds.length <= 1) return null;
+  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 null
+        if (!user) return <></>;
         return (
           <Avatar key={user.id} className="h-6 w-6">
             <AvatarImage src={user?.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}` || ""} />
@@ -81,7 +82,7 @@ export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
       id={`habit-${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">
         <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">
@@ -98,28 +99,44 @@ export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
           </CardTitle>
           {renderUserAvatars(habit, currentUser as User, usersData)}
         </div>
-        {habit.description && (
-          <CardDescription className={`whitespace-pre-line mt-2 ${habit.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>
-            {habit.description}
-          </CardDescription>
+        {(habit.description || habit.drawing) && (
+          <div className={`flex gap-4 mt-2 ${!habit.description ? 'justify-end' : ''}`}>
+            {habit.description && (
+              <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">
-        <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' : ''}`}>{t('coinsPerCompletion', { count: habit.coinReward })}</span>
+      <CardContent className="flex-grow flex flex-col justify-end">
+        <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' : ''}`}>{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
@@ -205,4 +222,3 @@ export default function HabitItem({ habit, onEdit, onDelete }: HabitItemProps) {
     </Card>
   )
 }
-

components/HabitStreak.tsx

@@ -8,6 +8,7 @@ import { useAtom } from 'jotai';
 import { useTranslations } from 'next-intl';
 import { CartesianGrid, Line, LineChart, ResponsiveContainer, Tooltip, XAxis, YAxis } from 'recharts';
 
+
 interface HabitStreakProps {
   habits: Habit[]
 }

components/Layout.tsx

@@ -1,18 +1,21 @@
 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 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">
+      
+        <Header className="sticky top-0 z-50" />
+        <div className="flex flex-1 overflow-hidden">
+          <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>

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/PomodoroTimer.tsx

@@ -177,7 +177,7 @@ export default function PomodoroTimer() {
 
   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">

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/TodayEarnedCoins.tsx

@@ -9,7 +9,7 @@ export default function TodayEarnedCoins({ longFormat }: { longFormat?: boolean
   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">

components/UserSelectModal.tsx

@@ -15,6 +15,8 @@ import UserForm from './UserForm';
 import { Avatar, AvatarFallback, AvatarImage } from './ui/avatar';
 import { Dialog, DialogContent, DialogHeader, DialogTitle } from './ui/dialog';
 
+
+
 function UserCard({
   user,
   onSelect,

components/WishlistItem.tsx

@@ -11,9 +11,10 @@ import { currentUserAtom, usersAtom } from '@/lib/atoms'
 import { User, WishlistItemType } from '@/lib/types'
 import { hasPermission } from '@/lib/utils'
 import { useAtom } from 'jotai'
-import { Archive, ArchiveRestore, Coins, Edit, Gift, MoreVertical, Trash2 } from 'lucide-react'
 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
@@ -29,13 +30,13 @@ interface WishlistItemProps {
 }
 
 const renderUserAvatars = (item: WishlistItemType, currentUser: User | null, usersData: { users: User[] }) => {
-  if (!item.userIds || item.userIds.length <= 1) return null;
+  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 null
+        if (!user) return <></>;
         return (
           <Avatar key={user.id} className="h-6 w-6">
             <AvatarImage src={user?.avatarPath && `/api/avatars/${user.avatarPath.split('/').pop()}` || ""} />
@@ -72,37 +73,51 @@ 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">
-        <div className="flex items-center gap-2">
-          <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">
-              ({item.targetCompletions === 1 ? t('usesLeftSingular') : t('usesLeftPlural', { count: item.targetCompletions })})
-            </span>
-          )}
-        </div>
-        <div className="flex items-center justify-between">
-          <div className="flex-1">
-            {item.description && (
-              <CardDescription className={`whitespace-pre-line ${item.archived ? 'text-gray-400 dark:text-gray-500' : ''}`}>
-                {item.description}
-              </CardDescription>
+      <CardHeader className="flex-shrink-0">
+        <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 flex-shrink-0">
+                ({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 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">
-        <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} {t('coinsSuffix')}
-          </span>
+      <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} {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"}
@@ -179,4 +194,3 @@ export default function WishlistItem({
     </Card>
   )
 }
-

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 (

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

@@ -1,50 +1,23 @@
-import { useAtom } from 'jotai';
-import { useState, useEffect, useMemo } from 'react';
-import { useTranslations } from 'next-intl';
-import { calculateCoinsEarnedToday, calculateCoinsSpentToday, calculateTotalEarned, calculateTotalSpent, calculateTransactionsToday, checkPermission, roundToInteger } from '@/lib/utils'
+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,
-  coinsBalanceAtom,
-  settingsAtom,
   usersAtom,
-  currentUserAtom,
-} from '@/lib/atoms'
-import { addCoins, removeCoins, saveCoinsData } from '@/app/actions/data'
-import { CoinsData, User } from '@/lib/types'
-import { toast } from '@/hooks/use-toast'
-import { MAX_COIN_LIMIT } from '@/lib/constants'
-
-function handlePermissionCheck(
-  user: User | undefined,
-  resource: 'habit' | 'wishlist' | 'coins',
-  action: 'write' | 'interact',
-  tCommon: (key: string, values?: Record<string, any>) => string
-): boolean {
-  if (!user) {
-    toast({
-      title: tCommon("authenticationRequiredTitle"),
-      description: tCommon("authenticationRequiredDescription"),
-      variant: "destructive",
-    })
-    return false
-  }
-
-  if (!user.isAdmin && !checkPermission(user.permissions, resource, action)) {
-    toast({
-      title: tCommon("permissionDeniedTitle"),
-      description: tCommon("permissionDeniedDescription", { action, resource }),
-      variant: "destructive",
-    })
-    return false
-  }
-
-  return true
-}
+} from '@/lib/atoms';
+import { MAX_COIN_LIMIT } from '@/lib/constants';
+import { CoinsData } from '@/lib/types';
+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(options?: { selectedUser?: string }) {
   const t = useTranslations('useCoins');
@@ -117,20 +90,20 @@ export function useCoins(options?: { selectedUser?: string }) {
   ]);
 
   const add = async (amount: number, description: string, note?: string) => {
-    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return null
+    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return <></>;
     if (isNaN(amount) || amount <= 0) {
       toast({
         title: t("invalidAmountTitle"),
         description: t("invalidAmountDescription")
       })
-      return null
+      return <></>;
     }
     if (amount > MAX_COIN_LIMIT) {
       toast({
         title: t("invalidAmountTitle"),
         description: t("maxAmountExceededDescription", { max: MAX_COIN_LIMIT })
       })
-      return null
+      return <></>;
     }
 
     const data = await addCoins({
@@ -146,21 +119,21 @@ export function useCoins(options?: { selectedUser?: string }) {
   }
 
   const remove = async (amount: number, description: string, note?: string) => {
-    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return null
+    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return <></>;
     const numAmount = Math.abs(amount)
     if (isNaN(numAmount) || numAmount <= 0) {
       toast({
         title: t("invalidAmountTitle"),
         description: t("invalidAmountDescription")
       })
-      return null
+      return <></>;
     }
     if (numAmount > MAX_COIN_LIMIT) {
       toast({
         title: t("invalidAmountTitle"),
         description: t("maxAmountExceededDescription", { max: MAX_COIN_LIMIT })
       })
-      return null
+      return <></>;
     }
 
     const data = await removeCoins({
@@ -176,14 +149,14 @@ export function useCoins(options?: { selectedUser?: string }) {
   }
 
   const updateNote = async (transactionId: string, note: string) => {
-    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return null
+    if (!handlePermissionCheck(currentUser, 'coins', 'write', tCommon)) return <></>;
     const transaction = coins.transactions.find(t => t.id === transactionId)
     if (!transaction) {
       toast({
         title: tCommon("errorTitle"),
         description: t("transactionNotFoundDescription")
       })
-      return null
+      return <></>;
     }
 
     const updatedTransaction = {

hooks/useHabits.tsx

@@ -1,54 +1,24 @@
-import { useAtom, atom } from 'jotai'
-import { useTranslations } from 'next-intl'
-import { habitsAtom, coinsAtom, settingsAtom, usersAtom, habitFreqMapAtom, currentUserAtom } from '@/lib/atoms'
 import { addCoins, removeCoins, saveHabitsData } from '@/app/actions/data'
-import { Habit, Permission, SafeUser, User } from '@/lib/types'
+import { ToastAction } from '@/components/ui/toast'
 import { toast } from '@/hooks/use-toast'
-import { DateTime } from 'luxon'
+import { coinsAtom, currentUserAtom, habitFreqMapAtom, habitsAtom, settingsAtom, usersAtom } from '@/lib/atoms'
+import { Habit } from '@/lib/types'
 import {
-  getNowInMilliseconds,
-  getTodayInTimezone,
-  isSameDate,
-  t2d,
+  d2s,
   d2t,
-  getNow,
   getCompletionsForDate,
   getISODate,
-  d2s,
+  getNow,
+  getTodayInTimezone,
+  handlePermissionCheck,
+  isSameDate,
   playSound,
-  checkPermission
+  t2d
 } from '@/lib/utils'
-import { ToastAction } from '@/components/ui/toast'
+import { useAtom } from 'jotai'
 import { Undo2 } from 'lucide-react'
-
-
-function handlePermissionCheck(
-  user: SafeUser | User | undefined,
-  resource: 'habit' | 'wishlist' | 'coins',
-  action: 'write' | 'interact',
-  tCommon: (key: string, values?: Record<string, any>) => string
-): boolean {
-  if (!user) {
-    toast({
-      title: tCommon("authenticationRequiredTitle"),
-      description: tCommon("authenticationRequiredDescription"),
-      variant: "destructive",
-    })
-    return false
-  }
-
-  if (!user.isAdmin && !checkPermission(user.permissions, resource, action)) {
-    toast({
-      title: tCommon("permissionDeniedTitle"),
-      description: tCommon("permissionDeniedDescription", { action, resource }),
-      variant: "destructive",
-    })
-    return false
-  }
-
-  return true
-}
-
+import { DateTime } from 'luxon'
+import { useTranslations } from 'next-intl'
 
 export function useHabits() {
   const t = useTranslations('useHabits');
@@ -106,7 +76,7 @@ export function useHabits() {
         type: habit.isTask ? 'TASK_COMPLETION' : 'HABIT_COMPLETION',
         relatedItemId: habit.id,
       })
-      isTargetReached && playSound()
+      playSound()
       toast({
         title: t("completedTitle"),
         description: t("earnedCoinsDescription", { coinReward: habit.coinReward }),
@@ -207,7 +177,7 @@ export function useHabits() {
     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)

hooks/useWishlist.tsx

@@ -1,40 +1,13 @@
+import { removeCoins, saveWishlistItems } 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 { wishlistAtom, coinsAtom, currentUserAtom } from '@/lib/atoms'
-import { saveWishlistItems, removeCoins } from '@/app/actions/data'
-import { toast } from '@/hooks/use-toast'
-import { WishlistItemType, User, SafeUser } from '@/lib/types'
-import { celebrations } from '@/utils/celebrations'
-import { checkPermission } from '@/lib/utils'
 import { useCoins } from './useCoins'
 
-function handlePermissionCheck(
-  user: User | SafeUser | undefined,
-  resource: 'habit' | 'wishlist' | 'coins',
-  action: 'write' | 'interact',
-  tCommon: (key: string, values?: Record<string, any>) => string
-): boolean {
-  if (!user) {
-    toast({
-      title: tCommon("authenticationRequiredTitle"),
-      description: tCommon("authenticationRequiredDescription"),
-      variant: "destructive",
-    })
-    return false
-  }
-  
-  if (!user.isAdmin && !checkPermission(user.permissions, resource, action)) {
-    toast({
-      title: tCommon("permissionDeniedTitle"),
-      description: tCommon("permissionDeniedDescription", { action, resource }),
-      variant: "destructive",
-    })
-    return false
-  }
-  
-  return true
-}
-
 export function useWishlist() {
   const t = useTranslations('useWishlist');
   const tCommon = useTranslations('Common');

lib/atoms.ts

@@ -4,10 +4,11 @@ import {
   calculateTotalEarned,
   calculateTotalSpent,
   calculateTransactionsToday,
+  generateCryptoHash,
   getCompletionsForToday,
   getHabitFreq,
-  getTodayInTimezone,
   isHabitDue,
+  prepareDataForHashing,
   roundToInteger,
   t2d
 } from "@/lib/utils";
@@ -15,6 +16,7 @@ import { atom } from "jotai";
 import { atomFamily, atomWithStorage } from "jotai/utils";
 import { DateTime } from "luxon";
 import {
+  CoinsData,
   CompletionCache,
   Freq,
   getDefaultCoinsData,
@@ -24,7 +26,12 @@ import {
   getDefaultUsersData,
   getDefaultWishlistData,
   Habit,
-  UserId
+  HabitsData,
+  ServerSettings,
+  Settings,
+  UserData,
+  UserId,
+  WishlistData
 } from "./types";
 
 export interface BrowserSettings {
@@ -39,12 +46,12 @@ export const browserSettingsAtom = atomWithStorage('browserSettings', {
   expandedWishlist: false
 } as BrowserSettings)
 
-export const usersAtom = atom(getDefaultUsersData())
-export const settingsAtom = atom(getDefaultSettings());
-export const habitsAtom = atom(getDefaultHabitsData());
-export const coinsAtom = atom(getDefaultCoinsData());
-export const wishlistAtom = atom(getDefaultWishlistData());
-export const serverSettingsAtom = atom(getDefaultServerSettings());
+export const usersAtom = atom(getDefaultUsersData<UserData>())
+export const settingsAtom = atom(getDefaultSettings<Settings>());
+export const habitsAtom = atom(getDefaultHabitsData<HabitsData>());
+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) => {
@@ -121,8 +128,6 @@ export const pomodoroAtom = atom<PomodoroAtom>({
   minimized: false,
 })
 
-import { generateCryptoHash, prepareDataForHashing } from '@/lib/utils';
-
 export const userSelectAtom = atom<boolean>(false)
 export const aboutOpenAtom = atom<boolean>(false)
 
@@ -229,10 +234,3 @@ export const habitsByDateFamily = atomFamily((dateString: string) =>
     return habits.filter(habit => isHabitDue({ habit, timezone, date }));
   })
 );
-
-// Derived atom for daily habits
-export const dailyHabitsAtom = atom((get) => {
-  const settings = get(settingsAtom);
-  const today = getTodayInTimezone(settings.system.timezone);
-  return get(habitsByDateFamily(today));
-});

lib/client-helpers.ts

@@ -4,7 +4,7 @@
 import { useAtom } from 'jotai'
 import { useSession } from "next-auth/react"
 import { usersAtom } from './atoms'
-import { checkPermission } from './utils'
+import { hasPermission } from './utils'
 
 export function useHelpers() {
   const { data: session, status } = useSession()
@@ -30,8 +30,7 @@ export function useHelpers() {
     currentUser,
     usersData,
     status,
-    hasPermission: (resource: 'habit' | 'wishlist' | 'coins', action: 'write' | 'interact') => currentUser?.isAdmin ||
-      checkPermission(currentUser?.permissions, resource, action),
+    hasPermission,
     isIOS: iOS(),
   }
 }

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

@@ -1,5 +1,4 @@
 import { RRule } from "rrule"
-import { uuid } from "./utils"
 import { DateTime } from "luxon"
 
 export type UserId = string
@@ -47,6 +46,7 @@ export type Habit = {
   archived?: boolean // mark the habit as archived
   pinned?: boolean // mark the habit as pinned
   userIds?: UserId[]
+  drawing?: string // Optional JSON string of drawing data
 }
 
 
@@ -61,6 +61,7 @@ export type WishlistItemType = {
   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';
@@ -97,52 +98,58 @@ export interface WishlistData {
 }
 
 // Default value functions
-export const getDefaultUsersData = (): UserData => ({
-  users: [
-    {
-      id: uuid(),
-      username: 'admin',
-      // password: '', // No default password for admin initially? Or set a secure default?
-      isAdmin: true,
-      lastNotificationReadTimestamp: undefined, // Initialize as undefined
-    }
-  ]
-});
+export function getDefaultUsersData<UserData>(): UserData {
+  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 const getDefaultHabitsData = (): HabitsData => ({
-  habits: []
-});
+export function getDefaultHabitsData<HabitsData>(): HabitsData {
+  return { habits: [] } as HabitsData;
+}
 
+export function getDefaultTasksData<TasksData>(): TasksData {
+  return { tasks: [] } as TasksData;
+};
 
-export const getDefaultCoinsData = (): CoinsData => ({
-  balance: 0,
-  transactions: []
-});
+export function getDefaultCoinsData<CoinsData>(): CoinsData {
+  return { balance: 0, transactions: [] } as CoinsData;
+};
 
-export const getDefaultWishlistData = (): WishlistData => ({
-  items: []
-});
+export function getDefaultWishlistData<WishlistData>(): WishlistData {
+  return { items: [] } as WishlistData;
+}
 
-export const getDefaultSettings = (): Settings => ({
-  ui: {
-    useNumberFormatting: true,
-    useGrouping: true,
-  },
-  system: {
-    timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
-    weekStartDay: 1, // Monday
-    autoBackupEnabled: true, // Add this line (default to true)
-    language: 'en', // Default language
-  },
-  profile: {}
-});
+export function getDefaultSettings<Settings>(): Settings {
+  return {
+    ui: {
+      useNumberFormatting: true,
+      useGrouping: true,
+    },
+    system: {
+      timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
+      weekStartDay: 1, // Monday
+      autoBackupEnabled: true, // Add this line (default to true)
+      language: 'en', // Default language
+    },
+    profile: {}
+  } as Settings;
+};
 
-export const getDefaultServerSettings = (): ServerSettings => ({
-  isDemo: false
-})
+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,

lib/utils.test.ts

@@ -3,12 +3,9 @@ import {
   cn,
   getTodayInTimezone,
   getNow,
-  getNowInMilliseconds,
   t2d,
   d2t,
   d2s,
-  d2sDate,
-  d2n,
   isSameDate,
   calculateCoinsEarnedToday,
   calculateTotalEarned,
@@ -16,16 +13,15 @@ import {
   calculateCoinsSpentToday,
   isHabitDueToday,
   isHabitDue,
-  uuid,
   isTaskOverdue,
   deserializeRRule,
   serializeRRule,
   convertHumanReadableFrequencyToMachineReadable,
   convertMachineReadableFrequencyToHumanReadable,
   prepareDataForHashing,
-  generateCryptoHash,
   getUnsupportedRRuleReason,
-  roundToInteger
+  roundToInteger,
+  generateCryptoHash
 } from './utils'
 import { CoinTransaction, ParsedResultType, Settings, HabitsData, CoinsData, WishlistData, UserData } from './types'
 import { DateTime } from "luxon";
@@ -178,32 +174,6 @@ describe('isTaskOverdue', () => {
   })
 })
 
-describe('uuid', () => {
-  test('should generate valid UUIDs', () => {
-    const id = uuid()
-    // UUID v4 format: 8-4-4-4-12 hex digits
-    expect(id).toMatch(/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/)
-  })
-
-  test('should generate unique UUIDs', () => {
-    const ids = new Set()
-    for (let i = 0; i < 1000; i++) {
-      ids.add(uuid())
-    }
-    // All 1000 UUIDs should be unique
-    expect(ids.size).toBe(1000)
-  })
-
-  test('should generate v4 UUIDs', () => {
-    const id = uuid()
-    // Version 4 UUID has specific bits set:
-    // - 13th character is '4'
-    // - 17th character is '8', '9', 'a', or 'b'
-    expect(id.charAt(14)).toBe('4')
-    expect('89ab').toContain(id.charAt(19))
-  })
-})
-
 describe('datetime utilities', () => {
   let fixedNow: DateTime;
   let currentDateIndex = 0;
@@ -321,13 +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);
@@ -351,16 +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', () => {
@@ -989,11 +942,11 @@ describe('convertMachineReadableFrequencyToHumanReadable', () => {
 })
 
 describe('freshness utilities', () => {
-  const mockSettings: Settings = getDefaultSettings();
-  const mockHabits: HabitsData = getDefaultHabitsData();
-  const mockCoins: CoinsData = getDefaultCoinsData();
-  const mockWishlist: WishlistData = getDefaultWishlistData();
-  const mockUsers: UserData = getDefaultUsersData();
+  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({
@@ -1038,11 +991,11 @@ describe('freshness utilities', () => {
     });
 
     test('should handle empty data consistently', () => {
-      const emptySettings = getDefaultSettings();
-      const emptyHabits = getDefaultHabitsData();
-      const emptyCoins = getDefaultCoinsData();
-      const emptyWishlist = getDefaultWishlistData();
-      const emptyUsers = getDefaultUsersData();
+      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);

lib/utils.ts

@@ -1,13 +1,12 @@
-import { clsx, type ClassValue } from "clsx"
-import { twMerge } from "tailwind-merge"
-import { DateTime, DateTimeFormatOptions } from "luxon"
-import { datetime, RRule } from 'rrule'
-import { Freq, Habit, CoinTransaction, Permission, ParsedFrequencyResult, ParsedResultType, User, Settings, HabitsData, CoinsData, WishlistData, UserData } from '@/lib/types'
-import { DUE_MAP, INITIAL_DUE, RECURRENCE_RULE_MAP } from "./constants"
+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 _ from "lodash"
-import { v4 as uuidv4 } from 'uuid'
-import stableStringify from 'json-stable-stringify';
+import { clsx, type ClassValue } from "clsx"
+import { DateTime, DateTimeFormatOptions } from "luxon"
+import { Formats } from "next-intl"
+import { datetime, RRule } from 'rrule'
+import { twMerge } from "tailwind-merge"
+import { DUE_MAP, INITIAL_DUE, RECURRENCE_RULE_MAP } from "./constants"
 
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs))
@@ -33,12 +32,6 @@ 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);
@@ -61,30 +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,
@@ -438,22 +412,20 @@ export const openWindow = (url: string): boolean => {
   return true
 }
 
-export function deepMerge<T>(a: T, b: T) {
-  return _.merge(a, b, (x: unknown, y: unknown) => {
-    if (_.isArray(a)) {
-      return a.concat(b)
-    }
-  })
-}
-
-export function checkPermission(
-  permissions: Permission[] | undefined,
+export function hasPermission(
+  user: User | undefined,
   resource: 'habit' | 'wishlist' | 'coins',
   action: 'write' | 'interact'
 ): boolean {
-  if (!permissions) return false
-
-  return permissions.some(permission => {
+  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]
@@ -467,27 +439,6 @@ export function checkPermission(
   })
 }
 
-export function uuid() {
-  return uuidv4()
-}
-
-export function hasPermission(
-  currentUser: User | undefined,
-  resource: 'habit' | 'wishlist' | 'coins',
-  action: 'write' | 'interact'
-): boolean {
-  // If no current user, no permissions.
-  if (!currentUser) {
-    return false;
-  }
-  // If user is admin, they have all permissions.
-  if (currentUser.isAdmin) {
-    return true;
-  }
-  // Otherwise, check specific permissions.
-  return checkPermission(currentUser.permissions, resource, action);
-}
-
 /**
  * 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.
@@ -499,22 +450,13 @@ export function prepareDataForHashing(
   wishlist: WishlistData,
   users: UserData
 ): string {
-  // Combine all data into a single object.
-  // The order of keys in this object itself doesn't matter due to stableStringify,
-  // but being explicit helps in understanding what's being hashed.
-  const combinedData = {
+  return JSON.stringify({
     settings,
     habits,
     coins,
     wishlist,
     users,
-  };
-  const stringifiedData = stableStringify(combinedData);
-  // Handle cases where stringify might return undefined.
-  if (stringifiedData === undefined) {
-    throw new Error("Failed to stringify data for hashing. stableStringify returned undefined.");
-  }
-  return stringifiedData;
+  });
 }
 
 /**
@@ -539,3 +481,31 @@ export async function generateCryptoHash(dataString: string): Promise<string | n
     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
+}

messages/ca.json

@@ -0,0 +1,447 @@
+{
+  "Dashboard": {
+    "title": "Tauler"
+  },
+  "HabitList": {
+    "myTasks": "Les meves tasques",
+    "myHabits": "Els meus hàbits",
+    "addTaskButton": "Afegeix tasca",
+    "addHabitButton": "Afegeix hàbit",
+    "searchTasksPlaceholder": "Cerca tasques...",
+    "searchHabitsPlaceholder": "Cerca hàbits...",
+    "sortByLabel": "Ordena per:",
+    "sortByName": "Nom",
+    "sortByCoinReward": "Recompensa de monedes",
+    "sortByDueDate": "Data límit",
+    "sortByFrequency": "Freqüència",
+    "toggleSortOrderAriaLabel": "Canvia l'ordre de classificació",
+    "noTasksFoundMessage": "No s'han trobat tasques que coincideixin amb la teva cerca.",
+    "noHabitsFoundMessage": "No s'han trobat hàbits que coincideixin amb la teva cerca.",
+    "emptyStateTasksTitle": "Encara no hi ha tasques",
+    "emptyStateHabitsTitle": "Encara no hi ha hàbits",
+    "emptyStateTasksDescription": "Crea la teva primera tasca per començar a seguir el teu progrés",
+    "emptyStateHabitsDescription": "Crea el teu primer hàbit per començar a seguir el teu progrés",
+    "archivedSectionTitle": "Arxivat",
+    "deleteTaskDialogTitle": "Elimina tasca",
+    "deleteHabitDialogTitle": "Elimina hàbit",
+    "deleteTaskDialogMessage": "Estàs segur que vols eliminar aquesta tasca? Aquesta acció no es pot desfer.",
+    "deleteHabitDialogMessage": "Estàs segur que vols eliminar aquest hàbit? Aquesta acció no es pot desfer.",
+    "deleteButton": "Elimina"
+  },
+  "DailyOverview": {
+    "addTaskButtonLabel": "Afegeix tasca",
+    "addHabitButtonLabel": "Afegeix hàbit",
+    "todaysOverviewTitle": "Resum d'avui",
+    "dailyTasksTitle": "Tasques diàries",
+    "noTasksDueTodayMessage": "No hi ha tasques per avui. Afegeix-ne algunes per començar!",
+    "dailyHabitsTitle": "Hàbits diaris",
+    "noHabitsDueTodayMessage": "No hi ha hàbits per avui. Afegeix-ne alguns per començar!",
+    "wishlistGoalsTitle": "Objectius de la llista de desitjos",
+    "redeemableBadgeLabel": "{count}/{total} bescanviable",
+    "noWishlistItemsMessage": "Encara no hi ha elements a la llista de desitjos. Afegeix algunes metes per treballar-hi!",
+    "readyToRedeemMessage": "Llest per bescanviar!",
+    "coinsToGoMessage": "Falten {amount} monedes",
+    "showLessButton": "Mostra menys",
+    "showAllButton": "Mostra tot",
+    "viewButton": "Visualitza",
+    "deleteTaskDialogTitle": "Elimina tasca",
+    "deleteHabitDialogTitle": "Elimina hàbit",
+    "confirmDeleteDialogMessage": "Estàs segur que vols eliminar \"{name}\"? Aquesta acció no es pot desfer.",
+    "deleteButton": "Elimina",
+    "overdueTooltip": "Vençut"
+  },
+  "HabitContextMenuItems": {
+    "startPomodoro": "Inicia Pomodoro",
+    "moveToToday": "Mou a avui",
+    "moveToTomorrow": "Mou a demà",
+    "unpin": "Desfixa",
+    "pin": "Fixa",
+    "edit": "Edita",
+    "archive": "Arxiva",
+    "unarchive": "Desarxiva",
+    "delete": "Elimina"
+  },
+  "HabitStreak": {
+    "dailyCompletionStreakTitle": "Ratxa de finalització diària",
+    "tooltipHabitsLabel": "hàbits",
+    "tooltipTasksLabel": "tasques",
+    "tooltipCompletedLabel": "Completat"
+  },
+  "CoinBalance": {
+    "coinBalanceTitle": "Saldo de monedes"
+  },
+  "AddEditHabitModal": {
+    "editTaskTitle": "Edita tasca",
+    "editHabitTitle": "Edita hàbit",
+    "addNewTaskTitle": "Afegeix nova tasca",
+    "addNewHabitTitle": "Afegeix nou hàbit",
+    "nameLabel": "Nom *",
+    "descriptionLabel": "Descripció",
+    "whenLabel": "Quan *",
+    "completeLabel": "Completa",
+    "timesSuffix": "vegades",
+    "rewardLabel": "Recompensa",
+    "coinsSuffix": "monedes",
+    "drawingLabel": "Dibuix",
+    "addDrawing": "Afegeix Dibuix",
+    "editDrawing": "Edita Dibuix",
+    "shareLabel": "Comparteix",
+    "saveChangesButton": "Desa els canvis",
+    "addTaskButton": "Afegeix tasca",
+    "addHabitButton": "Afegeix hàbit"
+  },
+  "ConfirmDialog": {
+    "confirmButton": "Confirma",
+    "cancelButton": "Cancel·la"
+  },
+  "AddEditWishlistItemModal": {
+    "editTitle": "Edita recompensa",
+    "addTitle": "Afegeix nova recompensa",
+    "nameLabel": "Nom *",
+    "descriptionLabel": "Descripció",
+    "costLabel": "Cost",
+    "coinsSuffix": "monedes",
+    "redeemableLabel": "Bescanviable",
+    "timesSuffix": "vegades",
+    "errorNameRequired": "El nom és obligatori",
+    "errorCoinCostMin": "El cost en monedes ha de ser com a mínim 1",
+    "errorTargetCompletionsMin": "El nombre de finalitzacions objectiu ha de ser com a mínim 1",
+    "errorInvalidUrl": "Si us plau, introdueix una URL vàlida",
+    "linkLabel": "Enllaç",
+    "drawingLabel": "Dibuix",
+    "addDrawing": "Afegeix Dibuix",
+    "editDrawing": "Edita Dibuix",
+    "shareLabel": "Comparteix",
+    "saveButton": "Desa els canvis",
+    "addButton": "Afegeix recompensa"
+  },
+  "Navigation": {
+    "dashboard": "Tauler",
+    "tasks": "Tasques",
+    "habits": "Hàbits",
+    "calendar": "Calendari",
+    "wishlist": "Llista de desitjos",
+    "coins": "Monedes"
+  },
+  "TodayEarnedCoins": {
+    "todaySuffix": "avui"
+  },
+  "WishlistItem": {
+    "usesLeftSingular": "ús restant",
+    "usesLeftPlural": "usos restants",
+    "coinsSuffix": "monedes",
+    "redeem": "Bescanvia",
+    "redeemedDone": "Fet",
+    "redeemedExclamation": "Bescanviat!",
+    "editButton": "Edita",
+    "archiveButton": "Arxiva",
+    "unarchiveButton": "Desarxiva",
+    "deleteButton": "Elimina"
+  },
+  "WishlistManager": {
+    "title": "La meva llista de desitjos",
+    "addRewardButton": "Afegeix recompensa",
+    "emptyStateTitle": "La teva llista de desitjos està buida",
+    "emptyStateDescription": "Afegeix recompenses que t'agradaria guanyar amb les teves monedes",
+    "archivedSectionTitle": "Arxivat",
+    "popupBlockedTitle": "Finestra emergent bloquejada",
+    "popupBlockedDescription": "Si us plau, permet les finestres emergents per obrir l'enllaç",
+    "deleteDialogTitle": "Elimina recompensa",
+    "deleteDialogMessage": "Estàs segur que vols eliminar aquesta recompensa? Aquesta acció no es pot desfer.",
+    "deleteButton": "Elimina"
+  },
+  "UserSelectModal": {
+    "addUserButton": "Afegeix usuari",
+    "createNewUserTitle": "Crea nou usuari",
+    "selectUserTitle": "Selecciona usuari",
+    "signInSuccessTitle": "Inici de sessió correcte",
+    "signInSuccessDescription": "Benvingut de nou, {username}!",
+    "errorInvalidPassword": "contrasenya no vàlida",
+    "deleteUserConfirmation": "Estàs segur que vols eliminar l'usuari {username}? Aquesta acció no es pot desfer.",
+    "confirmDeleteButtonText": "Elimina",
+    "deletingButtonText": "Eliminant...",
+    "deleteUserSuccessTitle": "Usuari eliminat",
+    "deleteUserSuccessDescription": "L'usuari {username} s'ha eliminat correctament.",
+    "deleteUserErrorTitle": "Error en eliminar",
+    "genericError": "S'ha produït un error inesperat.",
+    "networkError": "S'ha produït un error de xarxa. Si us plau, torna-ho a intentar.",
+    "editUserTooltip": "Edita usuari",
+    "deleteUserTooltip": "Elimina usuari"
+  },
+  "CoinsManager": {
+    "title": "Gestió de monedes",
+    "currentBalanceLabel": "Saldo actual",
+    "coinsSuffix": "monedes",
+    "addCoinsButton": "Afegeix monedes",
+    "removeCoinsButton": "Elimina monedes",
+    "statisticsTitle": "Estadístiques",
+    "totalEarnedLabel": "Total guanyat",
+    "totalSpentLabel": "Total gastat",
+    "totalTransactionsLabel": "Transaccions totals",
+    "todaysEarnedLabel": "Guanyat avui",
+    "todaysSpentLabel": "Gastat avui",
+    "todaysTransactionsLabel": "Transaccions d'avui",
+    "transactionHistoryTitle": "Historial de transaccions",
+    "showLabel": "Mostra:",
+    "entriesSuffix": "entrades",
+    "showingEntries": "Mostrant {from} a {to} de {total} entrades",
+    "noTransactionsTitle": "Encara no hi ha transaccions",
+    "noTransactionsDescription": "El teu historial de transaccions apareixerà aquí un cop comencis a guanyar o gastar monedes",
+    "pageLabel": "Pàgina",
+    "ofLabel": "de",
+    "transactionTypeHabitCompletion": "Finalització d'hàbit",
+    "transactionTypeTaskCompletion": "Finalització de tasca",
+    "transactionTypeHabitUndo": "Desfer hàbit",
+    "transactionTypeTaskUndo": "Desfer tasca",
+    "transactionTypeWishRedemption": "Bescanvi de desig",
+    "transactionTypeManualAdjustment": "Ajust manual",
+    "transactionTypeCoinReset": "Reinici de monedes",
+    "transactionTypeInitialBalance": "Saldo inicial"
+  },
+  "NotificationBell": {
+    "errorUpdateTimestamp": "Error en actualitzar la marca de temps de notificació llegida:"
+  },
+  "PomodoroTimer": {
+    "focusLabel1": "Mantén-te concentrat",
+    "focusLabel2": "Tu pots",
+    "focusLabel3": "Continua endavant",
+    "focusLabel4": "Fes-ho",
+    "focusLabel5": "Fes que passi",
+    "focusLabel6": "Mantén-te fort",
+    "focusLabel7": "Esforça't",
+    "focusLabel8": "Un pas cada vegada",
+    "focusLabel9": "Tu pots fer-ho",
+    "focusLabel10": "Concentra't i conquereix",
+    "breakLabel1": "Fes un descans",
+    "breakLabel2": "Relaxa't i recarrega",
+    "breakLabel3": "Respira profundament",
+    "breakLabel4": "Estira't",
+    "breakLabel5": "Refresca't",
+    "breakLabel6": "T'ho mereixes",
+    "breakLabel7": "Recarrega la teva energia",
+    "breakLabel8": "Allunya't un moment",
+    "breakLabel9": "Neteja la teva ment",
+    "breakLabel10": "Descansa i recupera't",
+    "focusType": "Concentració",
+    "breakType": "Descans",
+    "pauseButton": "Pausa",
+    "startButton": "Inicia",
+    "resetButton": "Reinicia",
+    "skipButton": "Omet",
+    "wakeLockNotSupported": "El navegador no suporta wake lock",
+    "wakeLockInUse": "Wake lock ja està en ús",
+    "wakeLockRequestError": "Error en sol·licitar wake lock:",
+    "wakeLockReleaseError": "Error en alliberar wake lock:"
+  },
+  "HabitCalendar": {
+    "title": "Calendari d'hàbits",
+    "calendarCardTitle": "Calendari",
+    "selectDatePrompt": "Selecciona una data",
+    "tasksSectionTitle": "Tasques",
+    "habitsSectionTitle": "Hàbits",
+    "errorCompletingPastHabit": "Error en completar hàbit passat:"
+  },
+  "NotificationDropdown": {
+    "notLoggedIn": "No has iniciat sessió.",
+    "userCompletedItem": "{username} ha completat {itemName}.",
+    "userRedeemedItem": "{username} ha bescanviat {itemName}.",
+    "activityRelatedToItem": "Activitat relacionada amb {itemName} per {username}.",
+    "defaultUsername": "Algú",
+    "defaultItemName": "un element compartit",
+    "notificationsTitle": "Notificacions",
+    "notificationsTooltip": "Mostra finalitzacions o bescanvis d'altres usuaris per hàbits o llista de desitjos que has compartit amb ells (has de ser administrador)",
+    "noNotificationsYet": "Encara no hi ha notificacions."
+  },
+  "AboutModal": {
+    "dialogArisLabel": "quant a",
+    "changelogButton": "Registre de canvis",
+    "createdByPrefix": "Creat amb ❤️ per",
+    "starOnGitHubButton": "Dona una estrella a GitHub"
+  },
+  "PermissionSelector": {
+    "permissionsTitle": "Permisos",
+    "adminAccessLabel": "Accés d'administrador",
+    "adminAccessDescription": "Els administradors tenen permís complet sobre totes les dades de tots els usuaris",
+    "resourceHabitTask": "Hàbit / Tasca",
+    "resourceWishlist": "Llista de desitjos",
+    "resourceCoins": "Monedes",
+    "permissionWrite": "Escriptura",
+    "permissionInteract": "Interactua"
+  },
+  "UserForm": {
+    "toastUserUpdatedTitle": "Usuari actualitzat",
+    "toastUserUpdatedDescription": "Usuari {username} actualitzat amb èxit",
+    "toastUserCreatedTitle": "Usuari creat",
+    "toastUserCreatedDescription": "Usuari {username} creat amb èxit",
+    "actionUpdate": "actualitzar",
+    "actionCreate": "crear",
+    "errorFailedUserAction": "Error en {action} usuari",
+    "toastDemoDeleteDisabled": "L'eliminació està deshabilitada a la instància de demostració",
+    "toastCannotDeleteSelf": "No pots eliminar el teu propi compte",
+    "confirmDeleteUser": "Estàs segur que vols eliminar l'usuari {username}?",
+    "toastUserDeletedTitle": "Usuari eliminat",
+    "toastUserDeletedDescription": "L'usuari {username} s'ha eliminat correctament",
+    "toastDeleteUserFailed": "Error en eliminar l'usuari: {error}",
+    "errorTitle": "Error",
+    "errorFileSizeLimit": "La mida de l'arxiu ha de ser inferior a 5MB",
+    "toastAvatarUploadedTitle": "Avatar pujat",
+    "toastAvatarUploadedDescription": "Avatar pujat amb èxit",
+    "errorFailedAvatarUpload": "Error en pujar l'avatar",
+    "changeAvatarButton": "Canvia avatar",
+    "uploadAvatarButton": "Puja avatar",
+    "usernameLabel": "Nom d'usuari",
+    "usernamePlaceholder": "Nom d'usuari",
+    "newPasswordLabel": "Nova contrasenya",
+    "passwordLabel": "Contrasenya",
+    "passwordPlaceholderEdit": "Deixa en blanc per mantenir l'actual",
+    "passwordPlaceholderCreate": "Introdueix contrasenya",
+    "demoPasswordDisabledMessage": "La contrasenya està automàticament desactivada a la instància de demostració",
+    "disablePasswordLabel": "Desactiva contrasenya",
+    "cancelButton": "Cancel·la",
+    "saveChangesButton": "Desa els canvis",
+    "createUserButton": "Crea usuari",
+    "deleteAccountButton": "Elimina compte",
+    "deletingButtonText": "Eliminant...",
+    "areYouSure": "Estàs segur?",
+    "deleteUserConfirmation": "Estàs segur que vols eliminar l'usuari {username}?",
+    "cancel": "Cancel·la",
+    "confirmDeleteButtonText": "Elimina"
+  },
+  "ViewToggle": {
+    "habitsLabel": "Hàbits",
+    "tasksLabel": "Tasques"
+  },
+  "HabitItem": {
+    "overdue": "Vençut",
+    "whenLabel": "Quan: {frequency}",
+    "coinsPerCompletion": "{count} monedes per finalització",
+    "completedStatus": "Completat",
+    "completedStatusCount": "Completat ({completed}/{target})",
+    "completedStatusCountMobile": "{completed}/{target}",
+    "completeButton": "Completa",
+    "completeButtonCount": "Completa ({completed}/{target})",
+    "completeButtonCountMobile": "{completed}/{target}",
+    "undoButton": "Desfés",
+    "editButton": "Edita"
+  },
+  "TransactionNoteEditor": {
+    "noteTooLongTitle": "Nota massa llarga",
+    "noteTooLongDescription": "Les notes han de tenir menys de 200 caràcters",
+    "errorSavingNoteTitle": "Error en desar la nota",
+    "errorDeletingNoteTitle": "Error en eliminar la nota",
+    "pleaseTryAgainDescription": "Si us plau, torna-ho a intentar",
+    "addNotePlaceholder": "Afegeix una nota...",
+    "saveNoteTitle": "Desa nota",
+    "cancelButtonTitle": "Cancel·la",
+    "deleteNoteTitle": "Elimina nota",
+    "editNoteAriaLabel": "Edita nota"
+  },
+  "Profile": {
+    "guestUsername": "Convidat",
+    "editProfileButton": "Edita perfil",
+    "signOutSuccessTitle": "Tancament de sessió correcte",
+    "signOutSuccessDescription": "Has tancat sessió del teu compte",
+    "signOutErrorTitle": "Error en tancar sessió",
+    "signOutErrorDescription": "Error en tancar sessió",
+    "switchUserButton": "Canvia usuari",
+    "settingsLink": "Configuració",
+    "aboutButton": "Quant a",
+    "themeLabel": "Tema",
+    "editProfileModalTitle": "Edita perfil"
+  },
+  "PasswordEntryForm": {
+    "notYouButton": "No ets tu?",
+    "passwordLabel": "Contrasenya",
+    "passwordPlaceholder": "Introdueix contrasenya",
+    "loginErrorToastTitle": "Error",
+    "loginFailedErrorToastDescription": "Error en iniciar sessió",
+    "cancelButton": "Cancel·la",
+    "loginButton": "Inicia sessió"
+  },
+  "CompletionCountBadge": {
+    "countCompleted": "{completedCount}/{totalCount} completat"
+  },
+  "SettingsPage": {
+    "title": "Configuració",
+    "uiSettingsTitle": "Configuració d'interfície",
+    "numberFormattingLabel": "Format numèric",
+    "numberFormattingDescription": "Formateja nombres grans (ex: 1K, 1M, 1B)",
+    "numberGroupingLabel": "Agrupació numèrica",
+    "numberGroupingDescription": "Usa separadors de milers (ex: 1.000 vs 1000)",
+    "systemSettingsTitle": "Configuració del sistema",
+    "timezoneLabel": "Zona horària",
+    "timezoneDescription": "Selecciona la teva zona horària per a un seguiment precís de dates",
+    "weekStartDayLabel": "Dia d'inici de setmana",
+    "weekStartDayDescription": "Selecciona el teu dia preferit per iniciar la setmana",
+    "weekdays": {
+      "sunday": "Diumenge",
+      "monday": "Dilluns",
+      "tuesday": "Dimarts",
+      "wednesday": "Dimecres",
+      "thursday": "Dijous",
+      "friday": "Divendres",
+      "saturday": "Dissabte"
+    },
+    "autoBackupLabel": "Còpia de seguretat automàtica",
+    "autoBackupTooltip": "Quan està habilitat, les dades de l'aplicació (hàbits, monedes, configuracions, etc.) es copien automàticament cada dia al voltant de les 2 AM hora del servidor. Les còpies de seguretat s'emmagatzemen com a fitxers ZIP al directori `backups/` a l'arrel del projecte. Només es conserven les últimes 7 còpies de seguretat; les més antigues s'eliminen automàticament.",
+    "autoBackupDescription": "Realitza còpia de seguretat automàtica diària",
+    "languageLabel": "Idioma",
+    "languageDescription": "Tria el teu idioma preferit per mostrar a l'aplicació.",
+    "languageChangedTitle": "Idioma canviat",
+    "languageChangedDescription": "Si us plau, actualitza la pàgina per veure els canvis",
+    "languageDisabledInDemoTooltip": "Canviar l'idioma està deshabilitat a la versió de demostració."
+  },
+  "Common": {
+    "authenticationRequiredTitle": "Autenticació requerida",
+    "authenticationRequiredDescription": "Si us plau, inicia sessió per continuar.",
+    "permissionDeniedTitle": "Permís denegat",
+    "permissionDeniedDescription": "No tens permís de {action} per a {resource}.",
+    "undoButton": "Desfés",
+    "redoButton": "Refés",
+    "errorTitle": "Error"
+  },
+  "useHabits": {
+    "alreadyCompletedTitle": "Ja completat",
+    "alreadyCompletedDescription": "Ja has completat aquest hàbit avui.",
+    "completedTitle": "Completat!",
+    "earnedCoinsDescription": "Has guanyat {coinReward} monedes.",
+    "progressTitle": "Progrés!",
+    "progressDescription": "Has completat {count}/{target} vegades avui.",
+    "completionUndoneTitle": "Finalització desfeta",
+    "completionUndoneDescription": "Tens {count}/{target} finalitzacions avui.",
+    "noCompletionsToUndoTitle": "No hi ha finalitzacions per desfer",
+    "noCompletionsToUndoDescription": "Aquest hàbit no s'ha completat avui.",
+    "alreadyCompletedPastDateTitle": "Ja completat",
+    "alreadyCompletedPastDateDescription": "Aquest hàbit ja va ser completat el {dateKey}.",
+    "earnedCoinsPastDateDescription": "Vas guanyar {coinReward} monedes per {dateKey}.",
+    "progressPastDateDescription": "Has completat {count}/{target} vegades el {dateKey}."
+  },
+  "useWishlist": {
+    "redemptionLimitReachedTitle": "Límit de bescanvis assolit",
+    "redemptionLimitReachedDescription": "Has assolit el màxim de bescanvis per \"{itemName}\".",
+    "rewardRedeemedTitle": "🎉 Recompensa bescanviada!",
+    "rewardRedeemedDescription": "Has bescanviat \"{itemName}\" per {itemCoinCost} monedes.",
+    "notEnoughCoinsTitle": "No hi ha prou monedes",
+    "notEnoughCoinsDescription": "Necessites {coinsNeeded} monedes més per bescanviar aquesta recompensa."
+  },
+  "Warning": {
+    "areYouSure": "Estàs segur?",
+    "cancel": "Cancel·la"
+  },
+  "useCoins": {
+    "addedCoinsDescription": "S'han afegit {amount} monedes",
+    "invalidAmountTitle": "Quantitat no vàlida",
+    "invalidAmountDescription": "Si us plau, introdueix un nombre positiu vàlid",
+    "successTitle": "Èxit",
+    "transactionNotFoundDescription": "Transacció no trobada",
+    "maxAmountExceededDescription": "La quantitat no pot excedir {max}."
+  },
+  "DrawingModal": {
+    "colorLabel": "Color:",
+    "thicknessLabel": "Gruix:",
+    "undoButton": "Desfés",
+    "clearButton": "Neteja",
+    "saveDrawingButton": "Desa el dibuix",
+    "cancelButton": "Cancel·la"
+  }
+}

messages/de.json

@@ -82,6 +82,9 @@
     "timesSuffix": "mal",
     "rewardLabel": "Belohnung",
     "coinsSuffix": "Münzen",
+    "drawingLabel": "Zeichnung",
+    "addDrawing": "Zeichnung hinzufügen",
+    "editDrawing": "Zeichnung bearbeiten",
     "shareLabel": "Teilen",
     "saveChangesButton": "Änderungen speichern",
     "addTaskButton": "Aufgabe hinzufügen",
@@ -105,6 +108,9 @@
     "errorTargetCompletionsMin": "Zielabschlüsse müssen mindestens 1 sein",
     "errorInvalidUrl": "Bitte geben Sie eine gültige URL ein",
     "linkLabel": "Link",
+    "drawingLabel": "Zeichnung",
+    "addDrawing": "Zeichnung hinzufügen",
+    "editDrawing": "Zeichnung bearbeiten",
     "shareLabel": "Teilen",
     "saveButton": "Änderungen speichern",
     "addButton": "Belohnung hinzufügen"
@@ -431,5 +437,13 @@
     "maxAmountExceededDescription": "Der Betrag darf {max} nicht überschreiten.",
     "transactionNotFoundDescription": "Transaktion nicht gefunden",
     "maxAmountExceededDescription": "Der Betrag darf {max} nicht überschreiten."
+  },
+  "DrawingModal": {
+    "colorLabel": "Farbe:",
+    "thicknessLabel": "Dicke:",
+    "undoButton": "Rückgängig",
+    "clearButton": "Löschen",
+    "saveDrawingButton": "Zeichnung speichern",
+    "cancelButton": "Abbrechen"
   }
 }

messages/en.json

@@ -82,6 +82,9 @@
     "timesSuffix": "times",
     "rewardLabel": "Reward",
     "coinsSuffix": "coins",
+    "drawingLabel": "Drawing",
+    "addDrawing": "Add Drawing",
+    "editDrawing": "Edit Drawing",
     "shareLabel": "Share",
     "saveChangesButton": "Save Changes",
     "addTaskButton": "Add Task",
@@ -105,6 +108,9 @@
     "errorTargetCompletionsMin": "Target completions must be at least 1",
     "errorInvalidUrl": "Please enter a valid URL",
     "linkLabel": "Link",
+    "drawingLabel": "Drawing",
+    "addDrawing": "Add Drawing",
+    "editDrawing": "Edit Drawing",
     "shareLabel": "Share",
     "saveButton": "Save Changes",
     "addButton": "Add Reward"
@@ -288,7 +294,18 @@
     "cancelButton": "Cancel",
     "saveChangesButton": "Save Changes",
     "createUserButton": "Create User",
-    "deleteAccountButton": "Delete Account"
+    "deleteAccountButton": "Delete Account",
+    "toastDemoDeleteDisabled": "Deletion is disabled in demo instance",
+    "toastCannotDeleteSelf": "You cannot delete your own account",
+    "confirmDeleteUser": "Are you sure you want to delete user {username}?",
+    "toastUserDeletedTitle": "User deleted",
+    "toastUserDeletedDescription": "User {username} has been deleted successfully",
+    "toastDeleteUserFailed": "Failed to delete user: {error}",
+    "deletingButtonText": "Deleting...",
+    "areYouSure": "Are you sure?",
+    "deleteUserConfirmation": "Are you sure you want to delete user {username}?",
+    "cancel": "Cancel",
+    "confirmDeleteButtonText": "Delete"
   },
   "ViewToggle": {
     "habitsLabel": "Habits",
@@ -413,12 +430,18 @@
     "invalidAmountDescription": "Please enter a valid positive number",
     "successTitle": "Success",
     "transactionNotFoundDescription": "Transaction not found",
-    "maxAmountExceededDescription": "The amount cannot exceed {max}.",
-    "transactionNotFoundDescription": "Transaction not found",
     "maxAmountExceededDescription": "The amount cannot exceed {max}."
   },
   "Warning": {
     "areYouSure": "Are you sure?",
     "cancel": "Cancel"
+  },
+  "DrawingModal": {
+    "saveDrawingButton": "Save",
+    "cancelButton": "Cancel",
+    "clearButton": "Clear",
+    "undoButton": "Undo",
+    "colorLabel": "Color",
+    "thicknessLabel": "Thickness"
   }
 }

messages/es.json

@@ -82,6 +82,9 @@
     "timesSuffix": "veces",
     "rewardLabel": "Recompensa",
     "coinsSuffix": "monedas",
+    "drawingLabel": "Dibujo",
+    "addDrawing": "Añadir Dibujo",
+    "editDrawing": "Editar Dibujo",
     "shareLabel": "Compartir",
     "saveChangesButton": "Guardar cambios",
     "addTaskButton": "Añadir tarea",
@@ -105,6 +108,9 @@
     "errorTargetCompletionsMin": "El número de finalizaciones objetivo debe ser al menos 1",
     "errorInvalidUrl": "Por favor ingresa una URL válida",
     "linkLabel": "Enlace",
+    "drawingLabel": "Dibujo",
+    "addDrawing": "Añadir Dibujo",
+    "editDrawing": "Editar Dibujo",
     "shareLabel": "Compartir",
     "saveButton": "Guardar cambios",
     "addButton": "Añadir recompensa"
@@ -385,6 +391,14 @@
     "languageChangedDescription": "Por favor actualiza la página para ver los cambios",
     "languageDisabledInDemoTooltip": "Cambiar el idioma está deshabilitado en la versión de demostración."
   },
+  "DrawingModal": {
+    "colorLabel": "Color:",
+    "thicknessLabel": "Grosor:",
+    "undoButton": "Deshacer",
+    "clearButton": "Limpiar",
+    "saveDrawingButton": "Guardar Dibujo",
+    "cancelButton": "Cancelar"
+  },
   "Common": {
     "authenticationRequiredTitle": "Autenticación requerida",
     "authenticationRequiredDescription": "Por favor inicia sesión para continuar.",

messages/fr.json

@@ -82,6 +82,9 @@
     "timesSuffix": "fois",
     "rewardLabel": "Récompense",
     "coinsSuffix": "pièces",
+    "drawingLabel": "Dessin",
+    "addDrawing": "Ajouter un Dessin",
+    "editDrawing": "Modifier le Dessin",
     "shareLabel": "Partager",
     "saveChangesButton": "Sauvegarder les modifications",
     "addTaskButton": "Ajouter une tâche",
@@ -105,6 +108,9 @@
     "errorTargetCompletionsMin": "Les complétions cibles doivent être d'au moins 1",
     "errorInvalidUrl": "Veuillez entrer une URL valide",
     "linkLabel": "Lien",
+    "drawingLabel": "Dessin",
+    "addDrawing": "Ajouter un Dessin",
+    "editDrawing": "Modifier le Dessin",
     "shareLabel": "Partager",
     "saveButton": "Sauvegarder les modifications",
     "addButton": "Ajouter une récompense"
@@ -431,5 +437,13 @@
     "maxAmountExceededDescription": "Le montant ne peut pas dépasser {max}.",
     "transactionNotFoundDescription": "Transaction non trouvée",
     "maxAmountExceededDescription": "Le montant ne peut pas dépasser {max}."
+  },
+  "DrawingModal": {
+    "colorLabel": "Couleur :",
+    "thicknessLabel": "Épaisseur :",
+    "undoButton": "Annuler",
+    "clearButton": "Effacer",
+    "saveDrawingButton": "Enregistrer le dessin",
+    "cancelButton": "Annuler"
   }
 }

messages/ja.json

@@ -82,6 +82,9 @@
     "timesSuffix": "回",
     "rewardLabel": "報酬",
     "coinsSuffix": "コイン",
+    "drawingLabel": "描画",
+    "addDrawing": "描画を追加",
+    "editDrawing": "描画を編集",
     "shareLabel": "共有",
     "saveChangesButton": "変更を保存",
     "addTaskButton": "タスクを追加",
@@ -105,6 +108,9 @@
     "errorTargetCompletionsMin": "目標達成回数は1以上である必要があります",
     "errorInvalidUrl": "有効なURLを入力してください",
     "linkLabel": "リンク",
+    "drawingLabel": "描画",
+    "addDrawing": "描画を追加",
+    "editDrawing": "描画を編集",
     "shareLabel": "共有",
     "saveButton": "変更を保存",
     "addButton": "報酬を追加"
@@ -431,5 +437,13 @@
     "maxAmountExceededDescription": "金額は{max}を超えることはできません。",
     "transactionNotFoundDescription": "取引が見つかりません",
     "maxAmountExceededDescription": "金額は{max}を超えることはできません。"
+  },
+  "DrawingModal": {
+    "colorLabel": "色：",
+    "thicknessLabel": "太さ：",
+    "undoButton": "元に戻す",
+    "clearButton": "クリア",
+    "saveDrawingButton": "描画を保存",
+    "cancelButton": "キャンセル"
   }
 }

messages/ko.json

@@ -0,0 +1,449 @@
+{
+  "Dashboard": {
+    "title": "대시보드"
+  },
+  "HabitList": {
+    "myTasks": "내 할 일",
+    "myHabits": "내 습관",
+    "addTaskButton": "할 일 추가",
+    "addHabitButton": "습관 추가",
+    "searchTasksPlaceholder": "할 일 검색...",
+    "searchHabitsPlaceholder": "습관 검색...",
+    "sortByLabel": "정렬 기준:",
+    "sortByName": "이름",
+    "sortByCoinReward": "코인 보상",
+    "sortByDueDate": "마감일",
+    "sortByFrequency": "빈도",
+    "toggleSortOrderAriaLabel": "정렬 순서 토글",
+    "noTasksFoundMessage": "검색과 일치하는 할 일이 없습니다.",
+    "noHabitsFoundMessage": "검색과 일치하는 습관이 없습니다.",
+    "emptyStateTasksTitle": "아직 할 일이 없습니다",
+    "emptyStateHabitsTitle": "아직 습관이 없습니다",
+    "emptyStateTasksDescription": "첫 할 일을 만들어 진행 상황을 추적해보세요",
+    "emptyStateHabitsDescription": "첫 습관을 만들어 진행 상황을 추적해보세요",
+    "archivedSectionTitle": "보관함",
+    "deleteTaskDialogTitle": "할 일 삭제",
+    "deleteHabitDialogTitle": "습관 삭제",
+    "deleteTaskDialogMessage": "이 할 일을 정말로 삭제하시겠습니까? 이 작업은 되돌릴 수 없습니다.",
+    "deleteHabitDialogMessage": "이 습관을 정말로 삭제하시겠습니까? 이 작업은 되돌릴 수 없습니다.",
+    "deleteButton": "삭제"
+  },
+  "DailyOverview": {
+    "addTaskButtonLabel": "할 일 추가",
+    "addHabitButtonLabel": "습관 추가",
+    "todaysOverviewTitle": "오늘의 개요",
+    "dailyTasksTitle": "오늘의 할 일",
+    "noTasksDueTodayMessage": "오늘 할 일이 없습니다. 할 일을 추가해서 시작하세요!",
+    "dailyHabitsTitle": "오늘의 습관",
+    "noHabitsDueTodayMessage": "오늘 습관이 없습니다. 습관을 추가해서 시작하세요!",
+    "wishlistGoalsTitle": "위시리스트 목표",
+    "redeemableBadgeLabel": "{count}/{total} 교환 가능",
+    "noWishlistItemsMessage": "아직 위시리스트 항목이 없습니다. 목표를 추가해서 노력해보세요!",
+    "readyToRedeemMessage": "교환할 준비 완료!",
+    "coinsToGoMessage": "{amount} 코인 남음",
+    "showLessButton": "적게 보기",
+    "showAllButton": "모두 보기",
+    "viewButton": "보기",
+    "deleteTaskDialogTitle": "할 일 삭제",
+    "deleteHabitDialogTitle": "습관 삭제",
+    "confirmDeleteDialogMessage": "정말로 \"{name}\"을(를) 삭제하시겠습니까? 이 작업은 되돌릴 수 없습니다.",
+    "deleteButton": "삭제",
+    "overdueTooltip": "기한이 지남"
+  },
+  "HabitContextMenuItems": {
+    "startPomodoro": "뽀모도로 시작",
+    "moveToToday": "오늘로 이동",
+    "moveToTomorrow": "내일로 이동",
+    "unpin": "고정 해제",
+    "pin": "고정",
+    "edit": "수정",
+    "archive": "보관",
+    "unarchive": "보관 해제",
+    "delete": "삭제"
+  },
+  "HabitStreak": {
+    "dailyCompletionStreakTitle": "일일 달성 연속 기록",
+    "tooltipHabitsLabel": "습관",
+    "tooltipTasksLabel": "할 일",
+    "tooltipCompletedLabel": "완료됨"
+  },
+  "CoinBalance": {
+    "coinBalanceTitle": "코인 잔액"
+  },
+  "AddEditHabitModal": {
+    "editTaskTitle": "할 일 수정",
+    "editHabitTitle": "습관 수정",
+    "addNewTaskTitle": "새 할 일 추가",
+    "addNewHabitTitle": "새 습관 추가",
+    "nameLabel": "이름 *",
+    "descriptionLabel": "설명",
+    "whenLabel": "시기 *",
+    "completeLabel": "완료",
+    "timesSuffix": "회",
+    "rewardLabel": "보상",
+    "coinsSuffix": "코인",
+    "drawingLabel": "그림",
+    "addDrawing": "그림 추가",
+    "editDrawing": "그림 편집",
+    "shareLabel": "공유",
+    "saveChangesButton": "변경 사항 저장",
+    "addTaskButton": "할 일 추가",
+    "addHabitButton": "습관 추가"
+  },
+  "ConfirmDialog": {
+    "confirmButton": "확인",
+    "cancelButton": "취소"
+  },
+  "AddEditWishlistItemModal": {
+    "editTitle": "보상 수정",
+    "addTitle": "새 보상 추가",
+    "nameLabel": "이름 *",
+    "descriptionLabel": "설명",
+    "costLabel": "비용",
+    "coinsSuffix": "코인",
+    "redeemableLabel": "교환 가능",
+    "timesSuffix": "회",
+    "errorNameRequired": "이름은 필수입니다",
+    "errorCoinCostMin": "코인 비용은 최소 1이어야 합니다",
+    "errorTargetCompletionsMin": "목표 완료 횟수는 최소 1이어야 합니다",
+    "errorInvalidUrl": "유효한 URL을 입력하세요",
+    "linkLabel": "링크",
+    "drawingLabel": "그림",
+    "addDrawing": "그림 추가",
+    "editDrawing": "그림 편집",
+    "shareLabel": "공유",
+    "saveButton": "변경 사항 저장",
+    "addButton": "보상 추가"
+  },
+  "Navigation": {
+    "dashboard": "대시보드",
+    "tasks": "할 일",
+    "habits": "습관",
+    "calendar": "캘린더",
+    "wishlist": "위시리스트",
+    "coins": "코인"
+  },
+  "TodayEarnedCoins": {
+    "todaySuffix": "오늘"
+  },
+  "WishlistItem": {
+    "usesLeftSingular": "사용 횟수 남음",
+    "usesLeftPlural": "사용 횟수 남음",
+    "coinsSuffix": "코인",
+    "redeem": "교환",
+    "redeemedDone": "완료",
+    "redeemedExclamation": "교환 완료!",
+    "editButton": "수정",
+    "archiveButton": "보관",
+    "unarchiveButton": "보관 해제",
+    "deleteButton": "삭제"
+  },
+  "WishlistManager": {
+    "title": "내 위시리스트",
+    "addRewardButton": "보상 추가",
+    "emptyStateTitle": "위시리스트가 비어 있습니다",
+    "emptyStateDescription": "코인으로 얻고 싶은 보상을 추가하세요",
+    "archivedSectionTitle": "보관함",
+    "popupBlockedTitle": "팝업 차단됨",
+    "popupBlockedDescription": "링크를 열려면 팝업을 허용해주세요",
+    "deleteDialogTitle": "보상 삭제",
+    "deleteDialogMessage": "이 보상을 정말로 삭제하시겠습니까? 이 작업은 되돌릴 수 없습니다.",
+    "deleteButton": "삭제"
+  },
+  "UserSelectModal": {
+    "addUserButton": "사용자 추가",
+    "createNewUserTitle": "새 사용자 생성",
+    "selectUserTitle": "사용자 선택",
+    "signInSuccessTitle": "로그인 성공",
+    "signInSuccessDescription": "환영합니다, {username}님!",
+    "errorInvalidPassword": "잘못된 비밀번호",
+    "deleteUserConfirmation": "사용자 {username}을(를) 정말로 삭제하시겠습니까? 이 작업은 되돌릴 수 없습니다.",
+    "confirmDeleteButtonText": "삭제",
+    "deletingButtonText": "삭제 중...",
+    "deleteUserSuccessTitle": "사용자 삭제됨",
+    "deleteUserSuccessDescription": "사용자 {username}이(가) 성공적으로 삭제되었습니다.",
+    "deleteUserErrorTitle": "삭제 실패",
+    "genericError": "예기치 않은 오류가 발생했습니다.",
+    "networkError": "네트워크 오류가 발생했습니다. 다시 시도해주세요.",
+    "deleteUserTooltip": "사용자 삭제",
+    "editUserTooltip": "사용자 수정"
+  },
+  "CoinsManager": {
+    "title": "코인 관리",
+    "currentBalanceLabel": "현재 잔액",
+    "coinsSuffix": "코인",
+    "addCoinsButton": "코인 추가",
+    "removeCoinsButton": "코인 제거",
+    "statisticsTitle": "통계",
+    "totalEarnedLabel": "총 획득 코인",
+    "totalSpentLabel": "총 사용 코인",
+    "totalTransactionsLabel": "총 거래 횟수",
+    "todaysEarnedLabel": "오늘 획득 코인",
+    "todaysSpentLabel": "오늘 사용 코인",
+    "todaysTransactionsLabel": "오늘 거래 횟수",
+    "transactionHistoryTitle": "거래 내역",
+    "showLabel": "표시:",
+    "entriesSuffix": "개",
+    "showingEntries": "{from}개부터 {to}개까지 총 {total}개 항목 표시",
+    "noTransactionsTitle": "아직 거래 내역이 없습니다",
+    "noTransactionsDescription": "코인을 획득하거나 사용하기 시작하면 거래 내역이 여기에 나타납니다",
+    "pageLabel": "페이지",
+    "ofLabel": "중",
+    "transactionTypeHabitCompletion": "습관 완료",
+    "transactionTypeTaskCompletion": "할 일 완료",
+    "transactionTypeHabitUndo": "습관 되돌리기",
+    "transactionTypeTaskUndo": "할 일 되돌리기",
+    "transactionTypeWishRedemption": "위시리스트 교환",
+    "transactionTypeManualAdjustment": "수동 조정",
+    "transactionTypeCoinReset": "코인 초기화",
+    "transactionTypeInitialBalance": "초기 잔액"
+  },
+  "NotificationBell": {
+    "errorUpdateTimestamp": "알림 읽은 시각을 업데이트하지 못했습니다:"
+  },
+  "PomodoroTimer": {
+    "focusLabel1": "집중하세요",
+    "focusLabel2": "할 수 있어요",
+    "focusLabel3": "계속하세요",
+    "focusLabel4": "해내세요",
+    "focusLabel5": "실행하세요",
+    "focusLabel6": "강하게 유지하세요",
+    "focusLabel7": "밀어붙이세요",
+    "focusLabel8": "한 번에 한 걸음씩",
+    "focusLabel9": "당신은 해낼 수 있어요",
+    "focusLabel10": "집중하고 정복하세요",
+    "breakLabel1": "휴식을 취하세요",
+    "breakLabel2": "편안하게 재충전하세요",
+    "breakLabel3": "깊게 숨쉬세요",
+    "breakLabel4": "몸을 쭉 펴세요",
+    "breakLabel5": "기분 전환하세요",
+    "breakLabel6": "당신은 그럴 자격이 있어요",
+    "breakLabel7": "에너지를 재충전하세요",
+    "breakLabel8": "잠시 벗어나세요",
+    "breakLabel9": "마음을 비우세요",
+    "breakLabel10": "휴식하고 활력을 되찾으세요",
+    "focusType": "집중",
+    "breakType": "휴식",
+    "pauseButton": "일시 정지",
+    "startButton": "시작",
+    "resetButton": "초기화",
+    "skipButton": "건너뛰기",
+    "wakeLockNotSupported": "브라우저가 wakelock을 지원하지 않습니다",
+    "wakeLockInUse": "Wake lock이 이미 사용 중입니다",
+    "wakeLockRequestError": "wake lock 요청 오류:",
+    "wakeLockReleaseError": "wake lock 해제 오류:"
+  },
+  "HabitCalendar": {
+    "title": "습관 캘린더",
+    "calendarCardTitle": "캘린더",
+    "selectDatePrompt": "날짜 선택",
+    "tasksSectionTitle": "할 일",
+    "habitsSectionTitle": "습관",
+    "errorCompletingPastHabit": "과거 습관 완료 오류:"
+  },
+  "NotificationDropdown": {
+    "notLoggedIn": "로그인되지 않았습니다.",
+    "userCompletedItem": "{username}님이 {itemName}을(를) 완료했습니다.",
+    "userRedeemedItem": "{username}님이 {itemName}을(를) 교환했습니다.",
+    "activityRelatedToItem": "{username}님의 {itemName} 관련 활동.",
+    "defaultUsername": "어떤 사용자",
+    "defaultItemName": "공유된 항목",
+    "notificationsTitle": "알림",
+    "notificationsTooltip": "공유한 습관이나 위시리스트에 대해 다른 사용자의 완료 또는 교환 내역을 보여줍니다 (관리자여야 합니다)",
+    "noNotificationsYet": "아직 알림이 없습니다."
+  },
+  "AboutModal": {
+    "dialogArisLabel": "정보",
+    "changelogButton": "변경 로그",
+    "createdByPrefix": "❤️로 제작: ",
+    "starOnGitHubButton": "GitHub에서 별 누르기"
+  },
+  "PermissionSelector": {
+    "permissionsTitle": "권한",
+    "adminAccessLabel": "관리자 접근",
+    "adminAccessDescription": "관리자는 모든 사용자의 모든 데이터에 대한 전체 권한을 가집니다",
+    "resourceHabitTask": "습관 / 할 일",
+    "resourceWishlist": "위시리스트",
+    "resourceCoins": "코인",
+    "permissionWrite": "쓰기",
+    "permissionInteract": "상호 작용"
+  },
+  "UserForm": {
+    "toastUserUpdatedTitle": "사용자 업데이트됨",
+    "toastUserUpdatedDescription": "사용자 {username}이(가) 성공적으로 업데이트되었습니다",
+    "toastUserCreatedTitle": "사용자 생성됨",
+    "toastUserCreatedDescription": "사용자 {username}이(가) 성공적으로 생성되었습니다",
+    "actionUpdate": "업데이트",
+    "actionCreate": "생성",
+    "errorFailedUserAction": "사용자 {action} 실패",
+    "errorTitle": "오류",
+    "errorFileSizeLimit": "파일 크기는 5MB 미만이어야 합니다",
+    "toastAvatarUploadedTitle": "아바타 업로드됨",
+    "toastAvatarUploadedDescription": "아바타가 성공적으로 업로드되었습니다",
+    "errorFailedAvatarUpload": "아바타 업로드 실패",
+    "changeAvatarButton": "아바타 변경",
+    "uploadAvatarButton": "아바타 업로드",
+    "usernameLabel": "사용자 이름",
+    "usernamePlaceholder": "사용자 이름",
+    "newPasswordLabel": "새 비밀번호",
+    "passwordLabel": "비밀번호",
+    "passwordPlaceholderEdit": "현재 비밀번호를 유지하려면 비워두세요",
+    "passwordPlaceholderCreate": "비밀번호를 입력하세요",
+    "demoPasswordDisabledMessage": "데모 인스턴스에서는 비밀번호가 자동으로 비활성화됩니다",
+    "disablePasswordLabel": "비밀번호 비활성화",
+    "cancelButton": "취소",
+    "saveChangesButton": "변경 사항 저장",
+    "createUserButton": "사용자 생성",
+    "deleteAccountButton": "계정 삭제",
+    "toastDemoDeleteDisabled": "데모 인스턴스에서는 삭제가 비활성화되어 있습니다",
+    "toastCannotDeleteSelf": "본인의 계정을 삭제할 수 없습니다",
+    "confirmDeleteUser": "사용자 {username}을(를) 삭제하시겠습니까?",
+    "toastUserDeletedTitle": "사용자 삭제됨",
+    "toastUserDeletedDescription": "사용자 {username}이(가) 성공적으로 삭제되었습니다",
+    "toastDeleteUserFailed": "사용자 삭제 실패: {error}",
+    "deletingButtonText": "삭제 중...",
+    "areYouSure": "정말로 삭제하시겠습니까?",
+    "deleteUserConfirmation": "사용자 {username}을(를) 삭제하시겠습니까?",
+    "cancel": "취소",
+    "confirmDeleteButtonText": "삭제"
+  },
+  "ViewToggle": {
+    "habitsLabel": "습관",
+    "tasksLabel": "할 일"
+  },
+  "HabitItem": {
+    "overdue": "기한이 지남",
+    "whenLabel": "시기: {frequency}",
+    "coinsPerCompletion": "완료당 {count} 코인",
+    "completedStatus": "완료됨",
+    "completedStatusCount": "완료됨 ({completed}/{target})",
+    "completedStatusCountMobile": "{completed}/{target}",
+    "completeButton": "완료",
+    "completeButtonCount": "완료 ({completed}/{target})",
+    "completeButtonCountMobile": "{completed}/{target}",
+    "undoButton": "실행 취소",
+    "editButton": "수정"
+  },
+  "TransactionNoteEditor": {
+    "noteTooLongTitle": "메모가 너무 깁니다",
+    "noteTooLongDescription": "메모는 200자 미만이어야 합니다",
+    "errorSavingNoteTitle": "메모 저장 오류",
+    "errorDeletingNoteTitle": "메모 삭제 오류",
+    "pleaseTryAgainDescription": "다시 시도해주세요",
+    "addNotePlaceholder": "메모 추가...",
+    "saveNoteTitle": "메모 저장",
+    "cancelButtonTitle": "취소",
+    "deleteNoteTitle": "메모 삭제",
+    "editNoteAriaLabel": "메모 수정"
+  },
+  "Profile": {
+    "guestUsername": "게스트",
+    "editProfileButton": "프로필 수정",
+    "signOutSuccessTitle": "로그아웃 성공",
+    "signOutSuccessDescription": "계정에서 로그아웃되었습니다",
+    "signOutErrorTitle": "로그아웃 오류",
+    "signOutErrorDescription": "로그아웃 실패",
+    "switchUserButton": "사용자 전환",
+    "settingsLink": "설정",
+    "aboutButton": "정보",
+    "themeLabel": "테마",
+    "editProfileModalTitle": "프로필 수정"
+  },
+  "PasswordEntryForm": {
+    "notYouButton": "당신이 아닙니까?",
+    "passwordLabel": "비밀번호",
+    "passwordPlaceholder": "비밀번호를 입력하세요",
+    "loginErrorToastTitle": "오류",
+    "loginFailedErrorToastDescription": "로그인 실패",
+    "cancelButton": "취소",
+    "loginButton": "로그인"
+  },
+  "CompletionCountBadge": {
+    "countCompleted": "{completedCount}/{totalCount} 완료됨"
+  },
+  "SettingsPage": {
+    "title": "설정",
+    "uiSettingsTitle": "UI 설정",
+    "numberFormattingLabel": "숫자 형식 지정",
+    "numberFormattingDescription": "큰 숫자 형식 지정 (예: 1K, 1M, 1B)",
+    "numberGroupingLabel": "숫자 그룹화",
+    "numberGroupingDescription": "천 단위 구분 기호 사용 (예: 1,000 vs 1000)",
+    "systemSettingsTitle": "시스템 설정",
+    "timezoneLabel": "시간대",
+    "timezoneDescription": "정확한 날짜 추적을 위해 시간대를 선택하세요",
+    "weekStartDayLabel": "주 시작 요일",
+    "weekStartDayDescription": "선호하는 주의 첫째 날을 선택하세요",
+    "weekdays": {
+      "sunday": "일요일",
+      "monday": "월요일",
+      "tuesday": "화요일",
+      "wednesday": "수요일",
+      "thursday": "목요일",
+      "friday": "금요일",
+      "saturday": "토요일"
+    },
+    "autoBackupLabel": "자동 백업",
+    "autoBackupTooltip": "활성화하면 애플리케이션 데이터(습관, 코인, 설정 등)가 서버 시간으로 매일 새벽 2시경에 자동으로 백업됩니다. 백업은 프로젝트 루트의 `backups/` 디렉터리에 ZIP 파일로 저장됩니다. 최근 7개의 백업만 보관되며, 오래된 백업은 자동으로 삭제됩니다.",
+    "autoBackupDescription": "매일 데이터 자동 백업",
+    "languageLabel": "언어",
+    "languageDescription": "애플리케이션의 표시 언어를 선택하세요.",
+    "languageChangedTitle": "언어 변경됨",
+    "languageChangedDescription": "변경 사항을 보려면 페이지를 새로고침하세요",
+    "languageDisabledInDemoTooltip": "데모 버전에서는 언어 변경이 비활성화됩니다."
+  },
+  "Common": {
+    "authenticationRequiredTitle": "인증 필요",
+    "authenticationRequiredDescription": "계속하려면 로그인하세요.",
+    "permissionDeniedTitle": "권한 거부됨",
+    "permissionDeniedDescription": "{resource}에 대한 {action} 권한이 없습니다.",
+    "undoButton": "실행 취소",
+    "redoButton": "다시 실행",
+    "errorTitle": "오류"
+  },
+  "useHabits": {
+    "alreadyCompletedTitle": "이미 완료됨",
+    "alreadyCompletedDescription": "오늘 이미 이 습관을 완료했습니다.",
+    "completedTitle": "완료!",
+    "earnedCoinsDescription": "{coinReward} 코인을 획득했습니다.",
+    "progressTitle": "진행 중!",
+    "progressDescription": "오늘 {count}/{target}회 완료했습니다.",
+    "completionUndoneTitle": "완료 취소됨",
+    "completionUndoneDescription": "오늘 {count}/{target}회 완료했습니다.",
+    "noCompletionsToUndoTitle": "실행 취소할 완료 내역 없음",
+    "noCompletionsToUndoDescription": "이 습관은 오늘 완료되지 않았습니다.",
+    "alreadyCompletedPastDateTitle": "이미 완료됨",
+    "alreadyCompletedPastDateDescription": "이 습관은 {dateKey}에 이미 완료되었습니다.",
+    "earnedCoinsPastDateDescription": "{dateKey}에 {coinReward} 코인을 획득했습니다.",
+    "progressPastDateDescription": "{dateKey}에 {count}/{target}회 완료했습니다."
+  },
+  "useWishlist": {
+    "redemptionLimitReachedTitle": "교환 한도 도달",
+    "redemptionLimitReachedDescription": "\"{itemName}\"에 대한 최대 교환 횟수에 도달했습니다.",
+    "rewardRedeemedTitle": "🎉 보상 교환됨!",
+    "rewardRedeemedDescription": "보상 \"{itemName}\"을(를) {itemCoinCost} 코인으로 교환했습니다.",
+    "notEnoughCoinsTitle": "코인 부족",
+    "notEnoughCoinsDescription": "이 보상을 교환하려면 {coinsNeeded} 코인이 더 필요합니다."
+  },
+  "useCoins": {
+    "addedCoinsDescription": "{amount} 코인 추가됨",
+    "invalidAmountTitle": "유효하지 않은 금액",
+    "invalidAmountDescription": "유효한 양의 숫자를 입력하세요",
+    "successTitle": "성공",
+    "transactionNotFoundDescription": "거래를 찾을 수 없습니다",
+    "maxAmountExceededDescription": "금액은 {max}을(를) 초과할 수 없습니다.",
+    "transactionNotFoundDescription": "거래를 찾을 수 없습니다",
+    "maxAmountExceededDescription": "금액은 {max}을(를) 초과할 수 없습니다."
+  },
+  "Warning": {
+    "areYouSure": "확실합니까?",
+    "cancel": "취소"
+  },
+  "DrawingModal": {
+    "colorLabel": "색상:",
+    "thicknessLabel": "두께:",
+    "undoButton": "실행 취소",
+    "clearButton": "지우기",
+    "saveDrawingButton": "그림 저장",
+    "cancelButton": "취소"
+  }
+}

messages/ru.json

@@ -82,6 +82,9 @@
     "timesSuffix": "раз",
     "rewardLabel": "Награда",
     "coinsSuffix": "монет",
+    "drawingLabel": "Рисунок",
+    "addDrawing": "Добавить Рисунок",
+    "editDrawing": "Редактировать Рисунок",
     "shareLabel": "Поделиться",
     "saveChangesButton": "Сохранить",
     "addTaskButton": "Добавить задачу",
@@ -105,6 +108,9 @@
     "errorTargetCompletionsMin": "Минимум 1 выполнение",
     "errorInvalidUrl": "Некорректная ссылка",
     "linkLabel": "Ссылка",
+    "drawingLabel": "Рисунок",
+    "addDrawing": "Добавить Рисунок",
+    "editDrawing": "Редактировать Рисунок",
     "shareLabel": "Поделиться",
     "saveButton": "Сохранить",
     "addButton": "Добавить цель"
@@ -431,5 +437,13 @@
     "maxAmountExceededDescription": "Сумма не может превышать {max}.",
     "transactionNotFoundDescription": "Транзакция не найдена",
     "maxAmountExceededDescription": "Сумма не может превышать {max}."
+  },
+  "DrawingModal": {
+    "colorLabel": "Цвет:",
+    "thicknessLabel": "Толщина:",
+    "undoButton": "Отменить",
+    "clearButton": "Очистить",
+    "saveDrawingButton": "Сохранить рисунок",
+    "cancelButton": "Отмена"
   }
 }

messages/zh.json

@@ -82,6 +82,9 @@
     "timesSuffix": "次",
     "rewardLabel": "奖励",
     "coinsSuffix": "金币",
+    "drawingLabel": "绘图",
+    "addDrawing": "添加绘图",
+    "editDrawing": "编辑绘图",
     "shareLabel": "分享",
     "saveChangesButton": "保存更改",
     "addTaskButton": "添加任务",
@@ -105,6 +108,9 @@
     "errorTargetCompletionsMin": "目标完成次数至少为 1",
     "errorInvalidUrl": "请输入有效的 URL",
     "linkLabel": "链接",
+    "drawingLabel": "绘图",
+    "addDrawing": "添加绘图",
+    "editDrawing": "编辑绘图",
     "shareLabel": "分享",
     "saveButton": "保存更改",
     "addButton": "添加奖励"
@@ -431,5 +437,13 @@
     "maxAmountExceededDescription": "金额不能超过 {max}。",
     "transactionNotFoundDescription": "未找到交易记录",
     "maxAmountExceededDescription": "金额不能超过 {max}。"
+  },
+  "DrawingModal": {
+    "colorLabel": "颜色：",
+    "thicknessLabel": "粗细：",
+    "undoButton": "撤销",
+    "clearButton": "清除",
+    "saveDrawingButton": "保存绘图",
+    "cancelButton": "取消"
   }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "habittrove",
-  "version": "0.2.23",
+  "version": "0.2.30",
   "private": true,
   "scripts": {
     "dev": "next dev --turbopack",
@@ -43,13 +43,12 @@
     "date-fns": "^3.6.0",
     "jotai": "^2.8.0",
     "js-confetti": "^0.12.0",
-    "json-stable-stringify": "^1.3.0",
     "linkify": "^0.2.1",
     "linkify-react": "^4.2.0",
     "lodash": "^4.17.21",
     "lucide-react": "^0.469.0",
     "luxon": "^3.5.0",
-    "next": "15.2.3",
+    "next": "^v15.5.7",
     "next-auth": "^5.0.0-beta.25",
     "next-intl": "^4.1.0",
     "next-themes": "^0.4.4",
@@ -63,7 +62,6 @@
     "rrule": "^2.8.1",
     "tailwind-merge": "^2.6.0",
     "tailwindcss-animate": "^1.0.7",
-    "uuid": "^11.0.5",
     "web-push": "^3.6.7",
     "zod": "^3.24.1"
   },
@@ -72,7 +70,6 @@
     "@tailwindcss/typography": "^0.5.15",
     "@types/archiver": "^6.0.3",
     "@types/bun": "^1.1.14",
-    "@types/json-stable-stringify": "^1.1.0",
     "@types/lodash": "^4.17.15",
     "@types/luxon": "^3.4.2",
     "@types/node": "^20.17.10",