PWA widgets dashboard, lock screen, screensaver with active category

- Dashboard (/dashboard): configurable widget system with 6 widget types
  (current_tasks, category_time, today_progress, next_task, motivace, calendar_mini)
  stored in localStorage widget_config
- Lock screen (/lockscreen): fullscreen with clock, active group badge,
  up to 4 current tasks, gradient from group color, swipe/tap to unlock
- InactivityMonitor: auto-redirect to lockscreen after configurable timeout
  (only in PWA standalone/fullscreen mode)
- Settings: widget toggle switches, inactivity timeout slider, lockscreen preview
- manifest.json: added display_override ["fullscreen","standalone"] + orientation portrait

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/tasks/app/page.tsx

@@ -10,7 +10,7 @@ export default function Home() {
 
   useEffect(() => {
     if (token) {
-      router.replace("/tasks");
+      router.replace("/dashboard");
     } else {
       router.replace("/login");
     }