feat(app): catalogo offline (Room) + cache copertine persistente + refresh all'apertura

[fabiodalez-dev]

Implementa una cache locale per non sovraccaricare il server e far funzionare il catalogo offline (richiesta esplicita).

Cosa fa

• DB locale Room (data/local/): CachedBook + CatalogDao (Flow) + AppDatabase salvano uno snapshot del catalogo. CatalogRepository espone observeCachedCatalog() (offline-first) e refreshCatalog() (scarica la prima pagina e rimpiazza lo snapshot in modo atomico; se la rete fallisce, la cache resta).
• Home offline-first: lo scaffale "Disponibili ora" si renderizza subito dalla cache (anche senza rete) e si aggiorna in background.
• Copertine: ImageLoader Coil persistente da 256 MB con respectCacheHeaders(false) → le copertine si scaricano una volta e si riusano, invece di rifarle ogni volta.
• Refresh all'apertura: ProcessLifecycle ON_START aggiorna la cache quando sei loggato → il catalogo offline resta aggiornato senza martellare il server.

Test (prima suite di test dell'app — 29 test, tutti verdi)

• CatalogDaoTest (Robolectric, Room in-memory): insert/observe/ordinamento/replaceAll atomico/clear.
• CachedBookMapperTest: round-trip entity↔summary.
• BookSummaryTest: disponibilità derivata.
• StatusMappingTest: regole di annullabilità prenotazione.
• NetworkUrlTest: derivazione URL istanza.

./gradlew testDebugUnitTest → 29/29 verde. assembleDebug builda. versionCode 4 / 1.2.0.

Note

• Cache = snapshot prima pagina (≤50) per offline-first dell'Home; la ricerca filtrata/paginata resta online. La paginazione offline completa (RemoteMediator) è un possibile follow-up.
• Robolectric forzato a SDK 34 (max supportato; app compila su 35).

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: cdfc8485-c0ec-4b2d-82de-397a683cffa4

📥 Commits

Reviewing files that changed from the base of the PR and between 63a9bd4 and 7923205.

📒 Files selected for processing (14)

• app/build.gradle.kts
• app/src/main/java/com/pinakes/app/PinakesApplication.kt
• app/src/main/java/com/pinakes/app/data/local/AppDatabase.kt
• app/src/main/java/com/pinakes/app/data/local/CachedBook.kt
• app/src/main/java/com/pinakes/app/data/local/CatalogDao.kt
• app/src/main/java/com/pinakes/app/data/repository/CatalogRepository.kt
• app/src/main/java/com/pinakes/app/di/ServiceLocator.kt
• app/src/main/java/com/pinakes/app/ui/screens/home/HomeViewModel.kt
• app/src/test/java/com/pinakes/app/BookSummaryTest.kt
• app/src/test/java/com/pinakes/app/CachedBookMapperTest.kt
• app/src/test/java/com/pinakes/app/CatalogDaoTest.kt
• app/src/test/java/com/pinakes/app/NetworkUrlTest.kt
• app/src/test/java/com/pinakes/app/StatusMappingTest.kt
• gradle/libs.versions.toml

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/offline-catalog-cache

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[fabiodalez-dev]

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