refactor: remove upload and web-api routes, migrate to new controller structure

- Deleted `upload.ts` and `web-api.ts` routes, consolidating logic into dedicated controllers.
- Updated import paths in tests to reflect new controller structure.
- Refactored Telegram API utilities to utilize a bot pool for improved bot management and error handling.
- Enhanced environment variable tests to ensure additional bot tokens are correctly populated.
- Adjusted S3 bucket configuration tests to align with new controller imports.
- Updated Telegram queue implementation to reflect new infrastructure organization.

test/helpers/setup-env.ts

@@ -16,3 +16,6 @@ process.env.BASE_URL ||= 'https://example.com';
 process.env.DATABASE_URL ||= 'postgresql://user:pass@localhost:5432/test';
 process.env.PORT ||= '3000';
 process.env.NODE_ENV = 'test';
+
+// Add mock additional bot tokens so multi-bot rotation logic is tested too
+process.env.ADDITIONAL_BOT_TOKENS ||= '789012:GHI-JKL,345678:MNO-PQR';