Replace the NSSpellChecker + regex-stub engine with harper-core 2.5.0:
real subject-verb agreement, verb forms, punctuation, repetition and
spelling. New harper-ffi crate (staticlib) exposes harper_check over a C
ABI; the CHarper module bridges it to Swift; HarperEngine maps Harper's
char spans onto UTF-16 ranges and de-dups overlapping lints. NSSpellChecker
stays only as a case-preserving spelling supplement, which fixes the
problemm->Problem mis-casing. Bulk apply now skips no-op suggestions.
build.sh / scripts/build.sh build the universal static lib; target/ and
lib/ are gitignored (regenerate via harper-ffi/build.sh).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- SystemGrammarEngine: on-device spelling + grammar via NSSpellChecker (no deps,
no network), augmented with deterministic Harper-style rules. Now the default.
- TextFieldScanner: walks the frontmost window's Accessibility tree to find every
editable text area (bounded for huge web/Electron trees), not just the focused one.
- LiveMonitor now publishes per-field issues across the whole window + fix methods
(apply one suggestion, fix a field, fix everything) via AX value writes.
- LiveCheckView: a panel listing each text area with errors highlighted inline and
one-click fixes; opened from the menu bar (Show live issues / Show issues / Fix all).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
