MemoryLogOutput extended LogOutput but was never wired as a Logger output (storage happens in the printer); DeletionNotifier/WatchStateNotifier's forServer/forItem filtered streams and WatchStateEvent.mediaType had no production consumers (tests now filter .stream directly); context.hiddenLibraries/profileSettings and toPlexUrl had zero call sites; MonoTokens.splashFactory was never read; OptimizedMediaImage's enableTranscoding/cacheKey chains, FocusableMediaCard.width/height/forceGridMode, TvBrowseRail's constant-zero gap functions, and media_image_helper's scaleFactor were never varied by any caller. The sha1 LRU stays (rebuild-hot artwork URLs); TvRailTrailing.none and the mono-theme copyWith stay live (lerp delegates to copyWith). Also carries the MusicPlayContext.id argument drops in the music screens and remaining sweep test updates.
Collapse duplicated setup across the suite into six shared helpers under
test/test_helpers/ and rewrite the 28 suites that were open-coding it:
http_fixtures.dart jsonResponse() for http.Response JSON stubs
library_tab_scaffold.dart pumps library tabs under their required ancestors
multi_server_fixtures.dart MultiServerProvider wiring for widget tests
playback_report_fakes.dart PlaybackReportCall + fake report sinks
profile_stack.dart production-shaped profile dependency graph
theme.dart testMonoTokens for fast-settling widget tests
Net -1245 lines with no change in coverage or assertions.
edde746