- Auto-save photo_path to matched assets when photo uploaded via /api/ocr
- Auto-extract and save serial_number from OCR text to blank-serial matched assets
- Add _extract_serial_from_text helper for serial number pattern matching
- Create scripts/backfill_vision_photos.py for batch-processing unlinked photos
- Add docs/OCR_PIPELINE.md documenting the full OCR/vision pipeline
- Fix test DB schema: add connect_id, equipment_id, barcode, customer_name
- Fix OCR test assertions to match actual endpoint behavior
