Refactor task management, UI interactions, and theme support

- Added task editing functionality with `EditForm` and integrated it with `TodoItemTouch`.
- Switched `dueDate` fields to `due_date` for consistency with API.
- Updated `useTasks` to handle dynamic task updates, deletions, and periodic refresh.
- Enhanced `useApi` with a dedicated delete method.
- Improved UI responsiveness and styling with multi-theme support in DaisyUI.
- Simplified modal handling for task interactions (`EditForm`, `CreateForm`).
- Improved `useSettings` with a `theme` field to support theme switching.
- Extended task commands for tagging, text, and due date updates.
- Optimized `parser` for extended edit command parsing.
- Updated helpers and actions to use `luxon` for date manipulations.
- Streamlined task and view logic for improved usability and extensibility.

src/utils/helpers.ts

@@ -1,27 +1,29 @@
 import type { Task } from '../types.ts'
+import { DateTime } from 'luxon'
 import Sherlock from 'sherlockjs'
 
-export function parseDueDate(text: string): number | null {
+export function parseDueDate(text: string): Task['due_date'] {
   try {
     const parsed = Sherlock.parse(text)
     if (parsed && parsed.startDate) {
-      return parsed.startDate.getTime()
+      return DateTime.fromMillis(parsed.startDate.getTime()).toUTC().toString()
     }
   }
   catch {}
   const ts = Date.parse(text)
-  return Number.isNaN(ts) ? null : ts
+  const millis = Number.isNaN(ts) ? null : ts
+  return millis ? DateTime.fromMillis(millis).toUTC().toString() : null
 }
 
 export function stopWorkLogging(t: Task) {
   if (t.logs && t.logs.length) {
     const lastLog = t.logs[t.logs.length - 1]
     if (lastLog.start && !lastLog.end) {
-      lastLog.end = Date.now()
+      lastLog.end = DateTime.now().toUTC().toString()
     }
   }
   else {
-    t.logs = []
+    t.logs = null
   }
   return t
 }