- Added missing 'from sqlalchemy.ext.asyncio import AsyncSession' import in downloads.py
This fixes the NameError at module load time that was breaking all download tasks
- Replaced regex patterns with plain-string equivalents in NOT_FOUND_PATTERNS:
* 'account.*deleted' → 'account deleted' (. and * are literal in substring search)
* 'profile.*not.*exist' → 'profile does not exist' (same issue)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Extract identical get_async_session() and cleanup_engine() functions
from downloads.py and maintenance.py into a shared db.py module.
This eliminates code duplication and improves maintainability.
db.py imports only from app.config and SQLAlchemy to avoid circular
dependencies with the task modules that import from it.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
bvandeusen
Bryan Van Deusen