Split the monolithic 3011-line patch into logical pieces:
0001: All new accessibility code (infrastructure, no existing code modified)
0002: EmacsView integration + cursor tracking (wiring only)
0003: Documentation (expanded with known limitations)
Improvements:
- Comprehensive commit messages with testing methodology
- Known limitations documented (text cap, bidi, mode-line icons)
- Documentation expanded with Known Limitations section
- Each patch is self-contained and reviewable
