docs(ocr): update master handoff after hOCR bbox fix
Summary
Updates and renames the OCR engine handoff document to reflect the current protected master baseline.
The document now includes:
- the integrated Paddle hOCR bounding-box integrity fix;
- automated and runtime validation evidence;
- the definitive CPU and GPU deployment references;
- the protected-master workflow for future evolutions;
- repository cleanup and archive-tag recovery guidance.
Validation
- Documentation-only change.
- No application code, dependencies, Dockerfiles, or runtime configuration changed.
- Markdown diff check completed successfully.
- No Docker image rebuild is required.