Nav graph, setup with distinct URL-vs-credential errors, locations tree with reorder
and bulk move, settings; library grid with search/sort/filter, detail with soft-delete
undo, continuous scan with duplicate-ISBN warning.
Verified by orchestrator: assembleDebug exit 0; testDebugUnitTest exit 0,
91 tests, 0 failures, 0 errors (68 -> 91).
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
