feat: v0.1.1 - poll editing, notifications, fixes

- Poll editing by creator (title, options, deadline)
- Notification panel with app notifications and click-to-navigate
- Poll creation notifies group members
- Invitation rejection notifies inviter
- Fix: notification createRule, timezone, autocancel, nginx, tab timing

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/pb_migrations/1776500005_created_notifications.js

@@ -106,7 +106,7 @@ migrate((db) => {
     "indexes": [],
     "listRule": "user = @request.auth.id",
     "viewRule": "user = @request.auth.id",
-    "createRule": "@request.auth.id != \"\" && user = @request.auth.id",
+    "createRule": "@request.auth.id != \"\"",
     "updateRule": "user = @request.auth.id",
     "deleteRule": "user = @request.auth.id",
     "options": {}