Release v0.2.0: Task comments, recurring calendar, system tray, app branding

New features:
- Task comments with date-stamped entries and last-comment summary
- Recurring tasks expanded on calendar (daily/weekly/monthly/yearly)
- System tray mode replacing CMD window (Windows/macOS/Linux)
- Ironpad logo as exe icon, tray icon, favicon, and header logo

Technical changes:
- Backend restructured for dual-mode: dev (API-only) / prod (tray + server)
- tray-item crate for cross-platform tray, winresource for icon embedding
- Calendar view refactored with CalendarEntry interface for recurring merging
- Added CHANGELOG.md, build-local.ps1, version bumped to 0.2.0

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/stores/tasks.ts

@@ -181,6 +181,42 @@ export const useTasksStore = defineStore('tasks', () => {
     }
   }
 
+  async function addComment(projectId: string, taskId: string, text: string) {
+    try {
+      error.value = null
+      const task = await tasksApi.addComment(projectId, taskId, text)
+      selectedTask.value = task
+
+      // Refresh task list so last_comment updates
+      if (currentProjectId.value === projectId) {
+        await loadProjectTasks(projectId)
+      }
+
+      return task
+    } catch (err) {
+      error.value = `Failed to add comment: ${err}`
+      throw err
+    }
+  }
+
+  async function deleteComment(projectId: string, taskId: string, commentIndex: number) {
+    try {
+      error.value = null
+      const task = await tasksApi.deleteComment(projectId, taskId, commentIndex)
+      selectedTask.value = task
+
+      // Refresh task list so last_comment updates
+      if (currentProjectId.value === projectId) {
+        await loadProjectTasks(projectId)
+      }
+
+      return task
+    } catch (err) {
+      error.value = `Failed to delete comment: ${err}`
+      throw err
+    }
+  }
+
   function selectTask(task: Task | null) {
     if (task && currentProjectId.value) {
       loadTask(currentProjectId.value, task.id)
@@ -227,6 +263,8 @@ export const useTasksStore = defineStore('tasks', () => {
     toggleTask,
     updateTaskMeta,
     deleteTask,
+    addComment,
+    deleteComment,
     selectTask,
     clearSelectedTask,
     clearProjectTasks,