# Verify Report: android-auto-local-music-phase2

Date: 2026-07-19
Mode: Strict TDD verify, hybrid artifact store
Verdict: PASS WITH WARNINGS

## Completeness

- Tasks: 37/37 checked in openspec/changes/android-auto-local-music-phase2/tasks.md, 0 remaining.
- Diff size independently confirmed: git diff --stat (tracked) = 6 files, 1809 insertions(+), 82 deletions(-); plus 1 untracked file test/modelos/pista_local_test.dart (88 lines) = 1979 total changed lines, matching apply-progress claimed ~1979 exactly.
- Working tree: nothing committed. git status --short shows only the modified/untracked files listed above; git log HEAD is unrelated to this change (08cae2a chore: bump version...).

## Test Execution (independently re-run, not trusted from apply-progress)

Command: flutter test <target> --concurrency=1 --timeout=60s, run once combined and once per-file for precise counts.

| File | Apply-progress claim | Actual (re-run) | Match |
|---|---|---|---|
| test/servicios/navegacion_auto_test.dart | 114/114 | 114/114 | Yes |
| test/servicios/musica_local_auto_test.dart | 19/19 | 18/18 | No, off by 1 |
| test/modelos/pista_local_test.dart | 5/5 | 5/5 | Yes |
| Total | 138/138 | 137/137 | No, off by 1 |

All 137 actual tests pass, 0 failures. Confirmed by both a combined run and per-file runs, and by a static grep count of test( declarations in musica_local_auto_test.dart, which returns 18.

## Requirement-by-Requirement Findings

1. Load-bearing page-scoping invariant - CONFIRMED. itemsLocales (lib/servicios/navegacion_auto.dart:426-460) sorts, slices via paginaDe FIRST, then computes docIds from ONLY the sliced page non-directory nodes, THEN awaits metadatosDe(docIds). The dedicated spy test (navegacion_auto_test.dart:557-606, "THE load-bearing test") is stronger than a call-count check: it captures and asserts the exact list of docIds received - page 0 of 200 nodes receives exactly doc-0..doc-49, page 3 receives exactly doc-150..doc-199, never the full 200. A 500-track folder browsing page 1 would, by this same code path, only ever resolve metadata for the 50 sliced tracks.

2. Async conversion correctness - CONFIRMED. All 29 itemsLocales/itemsLocalesOrdenCalidad/itemsLocalesBucket call sites in the test file are awaited inside async test bodies. The single production caller (hijosMusicaLocal, navegacion_auto.dart:976) correctly awaits. Grep confirms itemsLocales( appears only twice in lib/ - its own definition and this one call site.

3. Nine-fixture self-reported deviation - LARGELY CONFIRMED, count is off by one. git diff shows 8 (not 9) pre-existing .single assertions converted to .singleWhere((i) => i.id.startsWith(pista prefix)). Read before/after: the fix genuinely narrows the assertion to the track item only (ignoring a newly-prepended "Ordenar por calidad" mode entry that now appears even for a 1-track folder, per the literal 0 < totalPistas <= 150 reading of ADR-3). The narrowed assertions still check title/artUri/id correctness on the correct item; nothing was silently dropped.

4. Quality-sort threshold - CONFIRMED. _maxPistasParaOrdenCalidad = 150 (navegacion_auto.dart:267) is directly boundary-tested at the pure-function level: ofreceOrdenCalidad(149) true, (150) true, (151) false (navegacion_auto_test.dart:1074-1081), plus an integration-level test with a real 151-node list confirming the entry is omitted (navegacion_auto_test.dart:1315-1345).

5. Metadata session cache - CONFIRMED flat (not folder-scoped), 256-entry LRU-by-access. CacheMetadatosSesion (musica_local_auto.dart:113-139) is a single flat LinkedHashMap; obtener removes and reinserts on hit (moves to MRU end), guardar evicts entries.first (LRU end) only when length exceeds 256. Two dedicated tests prove: (a) LRU-by-access - refreshing doc-0 recency before an eviction-triggering insert protects it while doc-1 is evicted instead; (b) LRU-by-insertion baseline without the refresh evicts doc-0. This structurally proves paging into page 2 cannot evict page 1 entries (only actual LRU pressure at 256+ entries evicts anything).

6. Media-id collision safety - CONFIRMED against all 6 pre-existing prefixes (emisora:, grupo:, eq_preset:, carpeta_local:, carpeta_local_pag:, pista:), read directly in dispatch code (navegacion_auto.dart:495-535) and asserted in a dedicated collision test (navegacion_auto_test.dart:1164-1218) that also checks the two new prefixes never both match the same id. DocId-with-colon-or-slash survival confirmed with a realistic SAF shape: ordenLocalDesde parsing "carpeta_local_ord:calidad:2:primary:Music/Local" correctly yields (calidad, primary:Music/Local, 2) at navegacion_auto_test.dart:1230-1235, same for bucketLocalDesde.

7. Art fallback - CONFIRMED. _itemLocal (navegacion_auto.dart:630-655) falls back to artUriLocal(documentId) (Phase 1 placeholder rotation) whenever meta artUri is null/blank. Dedicated fallback-matrix tests cover both cache-miss (artUri: null) and parse-failure (fully-null MetadatosPista) cases, asserting the resolved artUri is never empty and matches the placeholder rotation formula (navegacion_auto_test.dart:1448-1499).

8. Native Kotlin structural review - CONFIRMED sound, static-review-only (no build/DHU available, consistent with established project precedent for listAudioChildren/resolvePlayableUri/pickMusicFolder).
   - MediaMetadataRetriever.setDataSource(this, documentUri) uses the correct (Context, Uri) overload against a DocumentsContract.buildDocumentUriUsingTree(parsedTree, documentId)-built SAF content URI (MainActivity.kt:498-499).
   - retriever.release() runs unconditionally in a finally block, itself wrapped in try/catch so a failing release() cannot mask/replace the real result (MainActivity.kt:547-554). No resource leak.
   - API-31 sample-rate guard is structurally correct: Build.VERSION.SDK_INT >= 31 gates the raw-key-38 (METADATA_KEY_SAMPLERATE) read; every other field is read unconditionally, matching ADR-5 (MainActivity.kt:506-513).
   - FileProvider authority claim independently verified against live manifest/XML, not trusted from design.md: AndroidManifest.xml:97-105 declares android:authorities equal to applicationId.fileprovider with the pluriwave_file_paths xml resource; pluriwave_file_paths.xml:6-8 declares a cache-path entry named cache with path ".", which covers the entire cache dir including the new pluriwave_art/ subdir. Kotlin code uses packageName.fileprovider, which matches. Zero manifest changes were needed, confirming the design/apply-progress claim.

9. l10n discipline - CONFIRMED. git diff --stat and git status --short against lib/l10n/ both empty - zero changes to any of the 13 .arb files. Sort-mode/bucket labels ("Ordenar por calidad", "A-F", "G-M", "N-S", "T-Z") are hardcoded Spanish static const/literal strings in navegacion_auto.dart, with doc comments explicitly noting they never go through AppLocalizations - grep confirms zero AppLocalizations. calls in the file.

10. Hygiene - CONFIRMED clean. No TODO/FIXME/print/debugPrint/AI-attribution strings found in the diff across all 4 changed production files. Literal-encoding scan of the diff (mojibake patterns) returned zero hits; Spanish literals render correctly.

11. Working tree - CONFIRMED nothing committed (see Completeness section).

12-13. Test count and diff size - see tables above; diff size matches exactly, test count is off by one file (18 actual vs 19 claimed for musica_local_auto_test.dart).

## Issues

### CRITICAL
None.

### WARNING
1. Apply-progress test-count self-report inaccurate: claims 138/138 (114+19+5); actual is 137/137 (114+18+5). musica_local_auto_test.dart has 18 tests, not 19 (verified by both test-runner output and a static test( count). All 137 real tests pass - this is a reporting-accuracy issue, not a functional defect, but it is the third apply-progress numeric discrepancy flagged this session per the orchestrator own warning, and should be corrected before archive.
2. Apply-progress "9 fixtures" claim off by one: git diff shows 8 (not 9) pre-existing .single assertions converted to .singleWhere(pista-prefixed), not 9. The mechanism/rationale of the fix is verified genuine and non-weakening (narrows to the track item, does not drop any check), but the count itself is inaccurate.

### SUGGESTION
- Native Kotlin (readAudioMetadataBatch/art cache/LRU trim) remains static-review-only per established project precedent - no build/DHU available in this environment. Design own "Open Questions" already flags the 150-track cap and 256-file/32MB art budget as needing on-device validation before this ships to real hardware; treat that as a pre-merge/pre-release gate, not a blocker for this SDD cycle.
- Minor CRLF line-ending normalization warnings appeared on git diff for 3 files (pista_local.dart, musica_local_auto.dart, test/servicios/musica_local_auto_test.dart) - cosmetic, not a defect.

## Verdict

PASS WITH WARNINGS. All spec requirements (Local Music Browsable Tree metadata/art, Sort Mode Navigation, Alphabetical Name Buckets, Embedded Album Art Display) are genuinely implemented and covered by passing tests that assert real behavioral invariants (exact docId lists, exact boundary values, exact collision non-matches), not just superficial results. The single riskiest element - the sync-to-async itemsLocales conversion - is correct: every call site awaits, the single production caller awaits, and the page-scoping invariant that motivated the whole design holds under direct code and test inspection. The only issues found are two instances of apply-progress under/over-counting its own claimed numbers by one; both are corrected here with independently re-verified figures. Recommend correcting apply-progress claimed counts before archive, but no code changes are required.

## Next Recommended

sdd-archive (after correcting the two count discrepancies in apply-progress, or accepting them as noted deviations).