feat: Add Time Tracking page with analytics and time distribution charts

- Add TimeTrackingPage with pie/bar charts for time spent per label
- Add task_time_logs schema for tracking time entries
- Add /api/analytics/time-distribution endpoint
- Update sidebar navigation with time tracking link
- Update App routing for new pages
- Fix routine blocker and settings card issues
- Add German translations for analytics

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

server/ai.ts

@@ -70,6 +70,13 @@ You can create, search, update, and delete tasks using the provided tools.
     - *Delete All*: Search all, then delete each.
 - **Labels**: Use 'getLabels' tags.
 
+### 🛡️ SAFETY RULES
+- **DELETION CONFIRMATION**: Before using 'deleteTask', you MUST:
+    1. LIST the tasks you are about to delete (Title + ID).
+    2. ASK the user for explicit confirmation ("Are you sure you want to delete these X tasks?").
+    3. WAIT for the user to say "Yes".
+    - ONLY then proceed to valid 'deleteTask' calls.
+
 **2. 🧠 Smart Planning & Scheduling**
 - **"Break this down"**: Create subtasks with 'parentTaskId'.
 - **"Find time for this"**: Use 'scheduleTask'.