fix: migrate atoms to normal functions

lib/atoms.ts

@@ -114,7 +114,7 @@ export const coinsBalanceAtom = atom((get) => {
 });
 
 /* transient atoms */
-interface PomodoroAtom {
+export interface PomodoroAtom {
   show: boolean
   selectedHabitId: string | null
   autoStart: boolean
@@ -191,38 +191,6 @@ export const completedHabitsMapAtom = atom((get) => {
   return map;
 });
 
-// Derived atom for habit frequency map
-export const habitFreqMapAtom = atom((get) => {
-  const habits = get(habitsAtom).habits;
-  const map = new Map<string, Freq>();
-  habits.forEach(habit => {
-    map.set(habit.id, getHabitFreq(habit));
-  });
-  return map;
-});
-
-export const pomodoroTodayCompletionsAtom = atom((get) => {
-  const pomo = get(pomodoroAtom)
-  const habits = get(habitsAtom)
-  const settings = get(settingsAtom)
-
-  if (!pomo.selectedHabitId) return 0
-
-  const selectedHabit = habits.habits.find(h => h.id === pomo.selectedHabitId!)
-  if (!selectedHabit) return 0
-
-  return getCompletionsForToday({
-    habit: selectedHabit,
-    timezone: settings.system.timezone
-  })
-})
-
-// Derived atom to check if any habits are tasks
-export const hasTasksAtom = atom((get) => {
-  const habits = get(habitsAtom)
-  return habits.habits.some(habit => habit.isTask === true)
-})
-
 // Atom family for habits by specific date
 export const habitsByDateFamily = atomFamily((dateString: string) =>
   atom((get) => {

lib/utils.ts

@@ -6,6 +6,7 @@ import { DateTime, DateTimeFormatOptions } from "luxon"
 import { Formats } from "next-intl"
 import { datetime, RRule } from 'rrule'
 import { twMerge } from "tailwind-merge"
+import { PomodoroAtom } from "./atoms"
 import { DUE_MAP, INITIAL_DUE, RECURRENCE_RULE_MAP } from "./constants"
 
 export function cn(...inputs: ClassValue[]) {
@@ -84,6 +85,20 @@ export function getCompletionsForToday({
   return getCompletionsForDate({ habit, date: getTodayInTimezone(timezone), timezone })
 }
 
+export function getTodayCompletions({ selectedHabitId }: PomodoroAtom, { habits }: HabitsData, { system: { timezone } }: Settings): number {
+  if (!selectedHabitId)
+    return 0;
+
+  const selectedHabit = habits.find(h => h.id === selectedHabitId!);
+  if (!selectedHabit)
+    return 0;
+
+  return getCompletionsForToday({
+    habit: selectedHabit,
+    timezone: timezone
+  });
+}
+
 export function getCompletedHabitsForDate({
   habits,
   date,