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.
Pumps PenCanvas with a plain Container as the page widget (no pdfrx/pdfium) and
simulates gestures to verify the INTEGRATED live path end-to-end: a stylus drag
commits a multi-point stroke; a single finger is rejected when finger-drawing is
off but draws when on; a 2nd pointer cancels an in-progress stylus stroke
(pinch/palm); committed strokes render through the revision-gated render cache
(eca5141) with no exception. Real behavioral evidence for the arbiter + render
swap beyond static analysis — without a device.
flutter analyze lib/editor clean; 233/233 tests (+5 widget).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
