=== E1-shell  attempts=1 quota_waits=0 hard_fails=0 ===
cost=$2.8037944 turns=6 err=?
--- result (tail) ---
ull nav graph; `library?shelfId={shelfId}` doubles as bare `library` via a nullable arg
- `ui/setup/SetupViewModel.kt`, `ui/setup/SetupScreen.kt` — new: URL/email/password form; reachability probe is a short-timeout GET to `/api/health` done *before* attempting login, so URL/network errors and 400/401/403 credential errors get distinct messages
- `ui/locations/LocationsViewModel.kt`, `ui/locations/LocationsScreen.kt` — new: bookcase→shelf tree, add/edit/delete dialogs, up/down reorder, per-shelf book counts, tap-shelf navigation, "Move books" bulk action
- `ui/settings/SettingsViewModel.kt`, `ui/settings/SettingsScreen.kt` — new: server URL, account (user id — see gap below), sign out, manual sync + last-sync time, book/cover counts
- `data/repo/LocationRepository.kt` — extended with `moveBooks(fromShelfId, toShelfId?)`, built only from BookDao's existing observe/upsert surface (no BookDao edit)
- `app/src/test/.../LocationRepositoryTest.kt` — new: 3 tests covering `moveBooks` (reassign, unassign, PENDING_CREATE preserved)
- `MainActivity.kt` — rewritten to host `BookshelfNavHost`; picks `setup` vs `library` start route from `authRepository.serverUrl`/`isLoggedIn`

**Boundaries respected:** did not touch `ui.library`/`ui.detail`/`ui.scan`, `ui.theme`/`ui.components`, `BookDao`/`BookRepository`, or any build files. Waited out E2's in-progress work (including one quota-wait cycle) rather than working around missing `LibraryScreen`/`DetailScreen`/`ScanScreen`.

**Gap vs SPEC:** the Settings "account" section shows the PocketBase user id, not the email — `AuthRepository`/`SettingsStore` (wave-2, out of my edit scope) never persists the login email, only the token and user id. Not blocking, but worth a follow-up if a human-readable account label is wanted.