feat: telegram commands, app settings, bot polling, webhook handling, UI improvements

Adds telegram bot command system with 13 commands (search, latest, random, etc.),
webhook/polling handlers, rate limiting, app settings page, and various UI/UX
improvements across all entity pages.

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

packages/server/src/notify_bridge_server/services/scheduler.py

@@ -26,6 +26,10 @@ async def start_scheduler() -> None:
 
     await _load_tracker_jobs()
 
+    # Start Telegram bot polling for bots in polling mode
+    from .telegram_poller import start_bot_polling
+    await start_bot_polling()
+
 
 async def _load_tracker_jobs() -> None:
     """Load enabled trackers and schedule polling jobs."""