fix: deployment — resolve dependency conflicts, add initial migration, CI/CD webhook

- Fix httpx/pydantic/redis version conflicts for litellm/aiogram/celery compatibility
- Add PYTHONPATH=/app to Dockerfile for alembic module resolution
- Skip Telegram webhook setup when URL is not HTTPS
- Fix FileUpload prop type mismatch in RecordingsPage
- Add alembic script.py.mako template and initial migration
- Configure docker-compose: port 8081, built frontend, no exposed internal ports
- Add deploy.sh and webhook-server.js for Gitea CI/CD auto-deploy

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

backend/app/main.py

@@ -30,10 +30,10 @@ async def seed_default_templates():
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     await seed_default_templates()
-    if settings.telegram_bot_token:
+    if settings.telegram_bot_token and settings.telegram_webhook_url.startswith("https"):
         await telegram_service.setup()
     yield
-    if settings.telegram_bot_token:
+    if settings.telegram_bot_token and settings.telegram_webhook_url.startswith("https"):
         await telegram_service.shutdown()