fix(notifications): Fix timezone and async bugs for reminders

1. Frontend: Convert datetime-local to UTC before sending to API
   - datetime-local returns local time without timezone
   - Now converts to ISO string with UTC timezone

2. Notification service: Add session.refresh() after commit
   - Fixes SQLAlchemy greenlet error when accessing notification.id
   - Error was: 'greenlet_spawn has not been called'

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: mjunaidca

apps/notification-service/src/notification_service/routers/dapr.py

@@ -71,6 +71,7 @@ async def handle_task_events(
         if notification:
             session.add(notification)
             await session.commit()
+            await session.refresh(notification)  # Refresh to get ID without lazy load
             logger.info("[DAPR] Created notification %d for %s", notification.id, notification.user_id)
 
         return {"status": "SUCCESS"}

apps/web/src/app/projects/[id]/tasks/new/page.tsx

@@ -101,12 +101,20 @@ export default function NewTaskPage() {
 
     try {
       setSubmitting(true)
+      // Convert local datetime to UTC ISO string for the API
+      // datetime-local gives us "2025-12-15T23:13" in local time
+      // We need to send it as UTC: "2025-12-15T18:13:00Z" (for UTC+5)
+      let dueDateUTC: string | undefined = undefined
+      if (dueDate) {
+        const localDate = new Date(dueDate)
+        dueDateUTC = localDate.toISOString()
+      }
       const task = await api.createTask(selectedProjectId, {
         title: title.trim(),
         description: description.trim() || undefined,
         priority,
         assignee_id: assigneeId && assigneeId !== "unassigned" ? Number(assigneeId) : undefined,
-        due_date: dueDate || undefined,
+        due_date: dueDateUTC,
         // Recurring fields
         is_recurring: isRecurring,
         recurrence_pattern: isRecurring && recurrencePattern ? recurrencePattern : undefined,