Benjamin Admin 729ebff63c feat: add border ghost filter + graphic detection tests + structure overlay ...

- Add _filter_border_ghost_words() to remove OCR artefacts from box borders
  (vertical + horizontal edge detection, column cleanup, re-indexing)
- Add 20 tests for border ghost filter (basic filtering + column cleanup)
- Add 24 tests for cv_graphic_detect (color detection, word overlap, boxes)
- Clean up cv_graphic_detect.py logging (per-candidate → DEBUG)
- Add structure overlay layer to StepReconstruction (boxes + graphics toggle)
- Show border_ghosts_removed badge in StepStructureDetection
- Update MkDocs with structure detection documentation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-16 18:28:53 +01:00

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