- Debug Server Error: Fix 403 Forbidden on Photos download by adding OAuth headers.
- Resilience: Implement 3-step import (Copy/Download -> Get Folder -> Move) to isolate failures.
- Workaround: Add blob sanitization and Advanced Drive API (v2) fallback for fragile DriveApp.createFile behavior.
- Docs: Update MEMORY.md and ARCHITECTURE.md with media handling quirks.
- Test: Add comprehensive unit tests for mediaHandlers.ts achieving >80% coverage.