Whole-project `flutter analyze` exited 1 on 17 pre-existing info/warning
lints (no errors) in dev tools and test files. Clean them so analyze is
green:
- editor_repository_test: drop the redundant sqflite_common import; keep
the used utils import with a transitive-dep ignore.
- pen_* widget tests: `(_, __)` wildcard params -> `(_, _)`.
- search_snippet_test / gen_bench_pdf / gen_dense_strokes: drop needless
interpolation braces; remove an unused `Size` show and an unused local;
mark the gen tool as print-allowed.
No runtime behavior changed. flutter analyze: No issues found. Affected
tests: 22/22 pass.
For library-wide full-text search (the user's #1 named differentiator):
snippetFor() finds the first case-insensitive match of a query in a source
string (PDF text page / typed box / OCR'd handwriting) and returns a windowed
excerpt centered on it, preserving the match offset + length and
truncatedStart/End flags so the results list can render "…ctx **match** ctx…"
and jump to the hit. The full match is always included; near-edge matches don't
over-truncate. Returns null for empty/absent query.
The FTS index + ranking live in the DB (search_indexer, later); this is the
pure, storage-free excerpt math, fully unit-tested.
flutter analyze lib/editor clean; 164/164 tests (+8).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
