feat: book reviews (Hilt rework) + richer book detail screen

[fabiodalez-dev]

Summary

Reworks the book-reviews feature (stars + text) onto the now-merged main (Hilt DI, offline cache, WorkManager sync) and addresses the review findings, then redesigns the book detail screen for readability. Consumes the server endpoints in the Pinakes API PR (feat(mobile-api): book reviews endpoints).

DI migration (main removed ServiceLocator/LocalServices)

• ReviewsRepository provided from AppModule.
• BookReviewsViewModel / MyReviewsViewModel → @HiltViewModel; the book id now flows through SavedStateHandle (ARG_BOOK_ID), same as BookDetailViewModel. Hand-written ViewModelProvider.Factorys deleted; call sites use hiltViewModel().

Review findings

• Graceful degradation — if the instance's server lacks the reviews endpoint (404/not_found), the whole section collapses instead of showing an error banner on a book the user can't act on.
• Delete confirmation dialog — a destructive, irreversible delete no longer fires on the raw tap.
• My-reviews load-more dedups by id on append (a cursor overlap must not duplicate a LazyColumn key).
• Read-only StarRating exposes a single "N.N out of 5" contentDescription instead of five undescribed star icons.
• i18n — 3 new keys (delete-confirm title/message, rating a11y label) added to all 4 locales (it/en/fr/de); full key parity (342 each).
• _contract/MOBILE_API_SPEC.md — corrected recensioni columns (stelle/descrizione, not voto/testo) + documented the always-on moderation semantics.

Book detail redesign (nicer, more complete, larger/darker text)

• Title → headlineSmall bold; author → titleMedium SemiBold onSurface; subtitle darkened.
• Section headings unified to a SemiBold titleMedium via a shared SectionTitle.
• Description → bodyLarge onSurface, 26sp line height (larger + darker).
• Metadata grouped into one rounded surfaceContainerLow card (a single spec sheet); MetadataRow values → bodyLarge Medium onSurface. Blank guards drop empty labelled rows.

Verification

Validated on an emulator against a live instance: login → catalog → a rich book (Il nome della rosa) shows the full spec card + About + the reviews section with a working "Write a review" affordance for a borrower; the end-to-end reviews flow (eligibility can_review, upsert→pending moderation, mine any-state, delete 200→404) confirmed against the server. 67 unit tests, assembleDebug + assembleRelease (R8) green.

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 92060a69-a63a-4d37-b094-c33c5cac7733

📥 Commits

Reviewing files that changed from the base of the PR and between 754d25e and f755d40.

📒 Files selected for processing (23)

• _contract/MOBILE_API_SPEC.md
• _contract/endpoint-manifest.spec.js
• _contract/openapi.json
• app/src/main/java/com/pinakes/app/data/model/Models.kt
• app/src/main/java/com/pinakes/app/data/network/PinakesApi.kt
• app/src/main/java/com/pinakes/app/data/repository/ReviewsRepository.kt
• app/src/main/java/com/pinakes/app/data/store/FeatureStore.kt
• app/src/main/java/com/pinakes/app/di/AppModule.kt
• app/src/main/java/com/pinakes/app/ui/components/Rating.kt
• app/src/main/java/com/pinakes/app/ui/components/Support.kt
• app/src/main/java/com/pinakes/app/ui/navigation/MainScaffold.kt
• app/src/main/java/com/pinakes/app/ui/navigation/PinakesNavHost.kt
• app/src/main/java/com/pinakes/app/ui/navigation/Routes.kt
• app/src/main/java/com/pinakes/app/ui/screens/detail/BookDetailScreen.kt
• app/src/main/java/com/pinakes/app/ui/screens/detail/BookReviewsSection.kt
• app/src/main/java/com/pinakes/app/ui/screens/detail/BookReviewsViewModel.kt
• app/src/main/java/com/pinakes/app/ui/screens/profile/ProfileScreen.kt
• app/src/main/java/com/pinakes/app/ui/screens/reviews/MyReviewsScreen.kt
• app/src/main/java/com/pinakes/app/ui/screens/reviews/MyReviewsViewModel.kt
• i18n/de.json
• i18n/en.json
• i18n/fr.json
• i18n/it.json

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch rework/book-reviews

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