Implement repair_hyphenation() that detects and repairs end-of-line
hyphenation within blocks. Joins hyphenated words across line breaks
when the hyphen is at the column right edge and the continuation
starts with a lowercase letter.
Key features:
- Detects hyphens: -, ‐ (U+2010), ‑ (U+2011), soft hyphen (U+00AD)
- Right-edge detection: span bbox.x1 within 5% of column width
- Lowercase continuation check to avoid joining sentences
- Column-aware: only joins spans in same column
- Cleans up empty spans/lines after repair
Adds HasBBox and HyphenableSpan traits for flexible span types.
Includes 9 comprehensive tests covering all acceptance criteria.
Fixes pre-existing test cases in schema module (missing column field).
Closes: pdftract-5o6hx
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
