test: Phase 2 — Presenter tests and test quality improvements

[ksalhab89]

Summary

Phase 2 of the testing infrastructure. Adds presenter-level tests and hardens test suite quality.

Stacked on Phase 1: #3520. The incremental diff for this PR starts at commit 1fe8feef (above feature/testing-infrastructure-phase1). To review only Phase 2 changes: git diff feature/testing-infrastructure-phase1...feature/testing-phase2-presenters

Changes

New Tests

• BookmarksDaoImpl — 16 tests covering all DAO operations with in-memory SQLite
• QuranPagePresenter — 9 tests: page loading, range queries, RxJava async, lifecycle
• AudioPresenter — 8 tests: play/pause, streaming vs local, qari gapless/gapped logic

Test Quality

• Replace Thread.sleep with TestScheduler.advanceTimeBy() in QuranPagePresenterTest
• Add RxSchedulerRule to eliminate test pollution from shared RxJava thread pools
• Update Kover to 0.9.6 (fixes instrumentation issues with newer AGP)

Docs

• TESTING_STRATEGY.md updated with Phase 2 status, patterns, and Phase 3 plan

Phase 2 Commits (above Phase 1)

474226f8 chore: Update Kover from 0.9.1 to 0.9.6
8fabc2d7 fix(tests): Remove Thread.sleep anti-pattern in QuranPagePresenterTest
a4500fed docs(testing): Add Phase 3 Mockito migration analysis
ecb7b54d fix(tests): Use RxSchedulerRule to avoid test pollution
b411e083 docs(testing): Update strategy with Phase 1 & 2 completion status
34ae6002 test(presenter): Add AudioPresenter tests (8 tests)
383bcd21 test(presenter): Add QuranPagePresenter tests (9 tests)
45cc1b8f docs(testing): Add Phase 2 fakes implementation guide
1fe8feef test(bookmark): Add comprehensive BookmarksDaoImpl tests (16 tests)

Test Plan

• ./gradlew :app:testMadaniDebugUnitTest — all tests pass, 0 flaky
• ./gradlew :common:bookmark:test — BookmarksDaoImpl tests pass

[ahmedre]

please rebase when you get a chance in sha' Allah

[github-actions]

OLD: app-madani-debug.apk (signature: V1, V2)
NEW: app-madani-debug.apk (signature: V1, V2)

          │          compressed          │         uncompressed         
          ├───────────┬───────────┬──────┼───────────┬───────────┬──────
 APK      │ old       │ new       │ diff │ old       │ new       │ diff 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
      dex │  20.1 MiB │  20.1 MiB │  0 B │  50.6 MiB │  50.6 MiB │  0 B 
     arsc │   2.1 MiB │   2.1 MiB │  0 B │   2.1 MiB │   2.1 MiB │  0 B 
 manifest │   5.6 KiB │   5.6 KiB │  0 B │  26.2 KiB │  26.2 KiB │  0 B 
      res │   1.8 MiB │   1.8 MiB │  0 B │     2 MiB │     2 MiB │  0 B 
   native │ 111.8 KiB │ 111.8 KiB │  0 B │  36.5 KiB │  36.5 KiB │  0 B 
    asset │   1.6 MiB │   1.6 MiB │  0 B │   3.8 MiB │   3.8 MiB │  0 B 
    other │ 200.1 KiB │ 200.1 KiB │ +3 B │ 501.5 KiB │ 501.5 KiB │  0 B 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
    total │  25.9 MiB │  25.9 MiB │ +3 B │  59.1 MiB │  59.1 MiB │  0 B 

[ksalhab89]

@ahmedre Rebased !