structlog fails with BrokenPipeError when stdout is redirected (e.g., background
processes, Docker logs). Replace all structlog.get_logger() calls with
logging.getLogger() and convert keyword-style log calls to %-format strings.
Also removes stale Docs/tasks.md (2028 lines) and updates Robot Framework
tests to match current API behavior.
Add 300ms minimum interval between progress broadcasts to reduce
WebSocket message volume. Broadcasts are sent immediately for
significant changes (>=1% or forced), otherwise throttled.
- Add MIN_BROADCAST_INTERVAL class constant (0.3s)
- Track last broadcast time per progress_id using time.monotonic()
- Clean up broadcast timestamps when progress completes/fails/cancels
- Fixed room name mismatch: ProgressService was broadcasting to
'download_progress' but JS clients join 'downloads' room
- Added _get_room_for_progress_type() mapping function
- Updated all progress methods to use correct room names
- Added 13 new tests for room name mapping and broadcast verification
- Updated existing tests to expect correct room names
- Fixed JS clients to join valid rooms (downloads, queue, scan)
- Added optional 'key' and 'folder' fields to ProgressUpdate dataclass
- key: Primary series identifier (provider key, e.g., 'attack-on-titan')
- folder: Optional series folder name for display (e.g., 'Attack on Titan (2013)')
- Updated start_progress() and update_progress() methods to accept key/folder parameters
- Enhanced to_dict() serialization to include key/folder when present
- Updated all docstrings to clarify identifier usage
- Added 5 new comprehensive unit tests for key/folder functionality
- All 25 ProgressService tests passing
- Updated infrastructure.md with series identifier documentation
- Maintains backward compatibility - fields are optional
- Completed Phase 3, Task 3.3 of identifier standardization initiative
