Add complete technical documentation for the material cleaning module's order error collection mechanism, including:
- System architecture and error collection flow diagrams
- Complete checklist of 52 error points across all layers
- Multi-layer error handling (IPC/service/retry layers)
- Frontend error display flow
- Retry mechanism and audit trail
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
