=== H2-picker  attempts=1 quota_waits=0 hard_fails=0 ===
cost=$3.9990499999999995 turns=108 err=?
--- result (tail) ---
 succeeded. New `shelf-picker-grouped-{light,dark}` snapshot shows two bookcases (Living Room with two shelves, one selected/bold/checked; Study empty with "No shelves yet"), plus the "Recent" section and "Not shelved" — verified visually. Existing `scan-searching-sheet` and `scan-lookup-failed-sheet` snapshots regenerated and confirmed correct (no stray "lower the book" line; reason string now visible).
- Grepped all Kotlin compiler warnings from a forced rebuild: zero `always 'false'` hits anywhere, including my files.
- `git status --porcelain`: only my owned files changed by me (`data/prefs/SettingsStore.kt`, `ui/scan/ScanScreen.kt`, `ui/scan/ScanViewModel.kt`, `ui/detail/DetailScreen.kt`, `ui/detail/DetailViewModel.kt`, new `ui/components/ShelfPickerSheet.kt`, and new/edited files under `app/app/src/test/**`). Everything else showing modified/untracked (`AppContainer.kt`, `data/metadata/**`, `ui/locations/**`, `ui/library/**`, `res/drawable/**`, `docs/METADATA-SOURCES.md`, locations snapshots) is the orchestrator's/other worker's concurrent work — untouched by me, left as-is.

**Didn't do / judgment calls worth flagging**
- Nothing skipped from the spec. One design decision: `ShelfPickerSheet` owns its own `ModalBottomSheet`, so tapping "Choose a shelf"/"Change" opens it as a second, stacked sheet over the already-open save/detail sheet — this matches "presented as a Material 3 ModalBottomSheet" literally rather than inlining the list in the existing sheet.
- Added tests beyond the stated minimum: `SettingsStoreTest` (round-trip, overwrite, clear, clearAuth), `ShelfPickerSheetTest` (`resolveRecentShelf` — null/missing-shelf/missing-bookcase/found cases), `ScanViewModelTest` and `DetailViewModelTest` (remember-on-save/move, "Not shelved" doesn't overwrite).