scoreText (more normalized occurrences rank higher; earlier first match breaks
ties) and rankHits (score every source, drop non-matches, attach a display
snippet of the original text, sort best-first with an explicit input-order
tiebreak since Dart's sort isn't stable). The search_indexer's pure ranking
core, making search_text + search_snippet load-bearing.
flutter analyze lib/editor clean; 223/223 tests (+9).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
