* fix(subtitles): widen halfwidth katakana where subtitle text enters the app
Broadcast-derived Japanese subs write katakana halfwidth (ｱﾝﾀ, ﾀﾞｷﾆ), so
overlay lines mixed squashed and normal-width text. Normalize live mpv
sub-text and parsed cue text to fullwidth so display, lookups, mining,
and stats all see one form. The tokenizer reuses the shared helper.
* fix(subtitles): fold stray voiced marks and widen before cue dedup
- A lone halfwidth ﾞ after fullwidth kana (カﾞ) now composes to ガ
instead of leaving a combining mark that broke name matching.
- Parsed cue text is widened before duplicate merging so ｶﾞｸ and ガク
on the same span collapse into one sidebar row.
- The YouTube track-load refresh widens the sub-text it reads directly.
* fix(stats): widen halfwidth katakana in stored lines and mined cards (#296)
Lines recorded before ingest widening still hold halfwidth katakana.
Occurrence and sentence-search queries widen line text on read, and the
mine-card route widens the sentence and word it receives, so the
dashboard and cards mined from history match newer rows. Word identity
columns are left as stored since the dashboard queries by them.
* fix(stats): match katakana in either width in sentence search
- Add narrowFullwidthKana, derived from widenHalfwidthKana so the two stay in sync
- Match subtitle text against the original, widened, and narrowed forms of each term so a search finds older lines stored as halfwidth
