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FreeTLab f9003436ea docs(openspec): archive android-auto-media and auto-media-art-quality 
Promotes the android-auto-media capability spec to openspec/specs/
and moves both completed changes into openspec/changes/archive/.
2026-07-19 13:22:18 +02:00

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Archive Report: auto-media-art-quality

Date: 2026-07-19 Status: Archived Verdict: PASS WITH WARNINGS — All issues reviewed and accepted by user

Executive Summary

Change auto-media-art-quality has been successfully archived. All 22 implementation tasks completed, all 25 Dart tests passing, and all spec requirements merged into the base capability spec. The change was previously BLOCKED on 2026-07-16 due to a missing base spec; that blocker is now resolved following the archival of the parent change android-auto-media on 2026-07-16. A single WARNING about favicon-validity-gate coverage (static-only, not live-404/dead-link detection) has been explicitly reviewed and accepted by the user as a documented limitation. The change is ready for release.

Change Overview

Identity

  • Change name: auto-media-art-quality
  • Parent dependency: android-auto-media (archived 2026-07-16)
  • Domain: Android Auto media browsing experience
  • Scope: 3 feature areas — Case-B favicon fallback, rotating on-brand art replacement, and audio-quality subtitle display

Previously Blocked (Resolved)

  • Previous archive attempt: Observation #2407 recorded BLOCKED status on 2026-07-16 because openspec/specs/android-auto-media/spec.md did not yet exist.
  • Blocker source: Base capability spec was a delta-only (promoted from change artifacts); could not merge until parent was archived.
  • Blocker resolution: Parent change android-auto-media was archived 2026-07-16, promoting its delta spec to the canonical base spec at openspec/specs/android-auto-media/spec.md.
  • Re-archive date: Today, 2026-07-19 — base spec now exists and is canonical; merge can proceed.

Spec Synchronization

Delta Spec Metadata

  • Source: openspec/changes/auto-media-art-quality/specs/android-auto-media/spec.md
  • Target: openspec/specs/android-auto-media/spec.md (now canonical, promoted from parent change)
  • Merge strategy: MODIFIED requirements (no ADDED or REMOVED)

Requirements Merged

Status Requirement Changes
MODIFIED Playable Item Metadata Expanded from null/empty-favicon fallback to 3-scenario coverage: valid reachable (remote logo passthrough), Case A (null/empty, rotate on-brand), Case B (malformed/unreachable, rotate on-brand), parity (same rotation on phone & car), on-brand (not launcher icon). Includes new scenarios: "Station has a valid, reachable remote logo", "Station has no logo (Case A)", "Station's logo URL is present but unreachable (Case B)", "Fallback art matches phone-UI per-station selection", "Fallback art is on-brand, not the launcher icon".
MODIFIED Browsable Media Tree Expanded from folder/playable-items structure to include 2 new scenarios for audio-quality subtitle: "Station has known codec and bitrate" (displaySubtitle with "bitrate kbps · CODEC" format), "Station has unknown codec or bitrate" (omit subtitle gracefully, never render literal "null").

Merge Result

  • Base spec path: C:\Proyectos\pluriwave\openspec\specs\android-auto-media\spec.md
  • Merge status: ✅ COMPLETE — Both MODIFIED requirements replaced in-place; pre-existing requirements (Android Auto Discovery Declaration, Media Item Resolution by ID, Play by Media ID Reuses Existing Playback Path, Playback State Synchronization) unchanged.
  • Lines affected: ~100 net new lines (expanded requirement text + 5 new scenarios)
  • No conflicts: Delta scenarios all novel; no duplicate-naming collisions

Archive Structure

Artifact Inventory

File Type Size Note
proposal.md Design artifact 4.3 KB Original fast-follow proposal, 3-gap closure intent
design.md Architecture artifact 8.9 KB Technical approach, 4 load-bearing design decisions, data flow, testing strategy
tasks.md Implementation plan 16.2 KB 22 tasks (8 phases) — Strict TDD, 2 files changed, 4 native drawables added, 1 deleted
apply-progress.md Execution record 7.8 KB All 22 tasks complete; single batch; ~347 text lines actual; TDD cycle evidence; 1 real bug caught (Uri.hasAuthority quirk)
verify-report.md Validation report 18.6 KB 25/25 tests passing; 0 CRITICAL, 1 WARNING, 1 SUGGESTION; adversarial checks; design coherence confirmed
specs/android-auto-media/spec.md Delta spec 6.1 KB 2 MODIFIED requirements with 5 new scenarios
archive-report.md This file — Archival summary and traceability record

Archive Location

  • Path: C:\Proyectos\pluriwave\openspec\changes\archive\2026-07-19-auto-media-art-quality\
  • Change folder (active): Removed (moved to archive)
  • Format: Openspec hybrid (files + engram entries for cross-session recovery)

Verification Summary

Test Results

  • Test count: 25 tests total (8 pre-existing, 17 new/modified for this change)
  • Pass rate: 25/25 (100%)
  • Test mode: Strict TDD with RED→GREEN→REFACTOR evidence
  • Coverage: Favicon validity gate, rotation parity, subtitle matrix, leaf integration, regression guards, parity drift guards

Verdict

PASS WITH WARNINGS

CRITICAL Issues

None.

WARNING-1 (User Accepted)

Case B coverage narrower than spec's literal text — documented limitation

  • Spec requirement: "Station's logo URL is present but unreachable (Case B)" — triggers include dead link, unreachable host, non-image response.
  • Shipped implementation: Static URL-shape validator only (static favicon-validity gate, no network I/O).
  • Gap: Syntactically-valid https://cdn.example.com/dead-link.png (404) or non-image responses still pass the gate; OS art loader may render broken/blank tile.
  • Root cause: Design.md Decision 1 explicitly rejected live-reachability checking (HTTP HEAD + cache) due to TOCTOU risk and untested-handler-path constraint (WARNING #1 from parent change).
  • User acceptance: Proposal's "Split Judgment" and design.md's explicit tradeoff analysis permit narrowing to malformed/non-http(s) subset only. User has reviewed verify-report and accepted this as an intended design tradeoff, documented for future teams.
  • Residual scope: Malformed URLs (bare hosts, wrong scheme, http:// no authority, whitespace, unparseable), non-http(s) schemes — these ARE covered deterministically by faviconUsable at zero network cost and are unit-tested fully.
  • Real-world impact: Low-severity known limitation, same gap every mainstream Android Auto music app has. Residual live-404 case remains a documented known limitation this iteration.

SUGGESTION-1

Guarded assertion in artUriPara "uuids distintos" test — low priority; same guarantee fully covered by unconditional parity test.

Design Decisions Verified

  1. ✅ Static favicon validity gate (no network) — matched exactly
  2. ✅ Port _fallbackArtFor verbatim — formula & order confirmed identical
  3. ✅ Retire default_station_art.png — deletion confirmed, zero dangling refs
  4. ✅ displaySubtitle format & fallback matrix — matches design table exactly
  5. ✅ _nombresArte private; order verified behaviorally — reasonable deviation

Implementation Summary

Files Changed (Live Codebase)

  • lib/servicios/navegacion_auto.dart — +~100 lines (4 new functions, 1 integration point; -6 lines retired const)
  • test/servicios/navegacion_auto_test.dart — +~130 lines (6 new test groups, 1 test replacement)
  • android/app/src/main/res/drawable/station_art_*.png — +4 binary (byte-for-byte copies from assets)
  • android/app/src/main/res/drawable/default_station_art.png — -1 binary (deleted)
  • Total: ~347 text lines changed, 4 binary adds, 1 binary deletion; comfortably under 400-line review budget

TDD Cycle

  • Mode: Strict TDD, no environment hangs (flutter build/run/analyze not executed per constraint)
  • Phases: 8 (6 behavioral, 2 coverage-only, 1 regression sweep)
  • Evidence: RED→GREEN→REFACTOR cycles documented per phase; 1 real bug caught (Uri.hasAuthority quirk)
  • Safety net: Full test file re-run on modified file; no regression

Code Quality

  • AI attribution: Zero matches for "Anthropic", "Claude", "Co-Authored", "Generated by"
  • Debug prints: Zero matches for print(), debugPrint(), console.log
  • Dead code: Grep-confirmed zero references to retired identifiers (_defaultArtUri, _artUriPara) in live code
  • Comment quality: Design-contract doc comments added; cross-links to phone UI source; gotcha documented inline

Rollback & Risk

Rollback Plan

Additive & reversible (as designed). Revert: restore default_station_art.png, _defaultArtUri const, old _artUriPara, remove 4 native drawables, drop displaySubtitle wiring and new tests. Phone UI and audio pipeline untouched — zero residual state.

Residual Risks

  1. Native drawable resolution (Phase 7) — static-review-only (no Android build env). Real DHU/device session still recommended to confirm android.resource:// URIs resolve correctly.
  2. Live-404 favicon detection (WARNING-1) — documented gap; accepted as known limitation.
  3. Order-drift (art names) — mitigated by code comment + parity guard test, no structural enforcement.

Closure Sign-Off

Blockers Resolved

  • ✅ Base capability spec now exists (parent archived)
  • ✅ All spec scenarios mapped to tests and passing
  • ✅ Design decisions verified in code
  • ✅ All 22 tasks completed, no stale tasks
  • ✅ Zero CRITICAL issues; WARNING-1 explicitly accepted by user

Ready for Release

This change is ready for:

  1. Git integration: Commit / PR / merge to main (working tree staged; no commit made by apply agent)
  2. CI/CD: All guardrails passed; real Android build/DHU pass recommended before shipping (Phase 7/8 note)
  3. Release notes: Mention the favicon-validity-gate design tradeoff (known limitation for live-404/dead-link cases)

SDD Cycle Status

  • ✅ Proposed & Explored
  • ✅ Specified & Designed
  • ✅ Tasked & Applied (Strict TDD)
  • ✅ Verified (PASS WITH WARNINGS)
  • ✅ Archived (Today, 2026-07-19)

This change is closed. No further SDD phases are needed. Ready for next change.

Archival Metadata

  • Archive path: openspec/changes/archive/2026-07-19-auto-media-art-quality/
  • Archive timestamp: 2026-07-19 (ISO date)
  • Artifact store: Hybrid (files + engram for recovery)
  • Spec base path: openspec/specs/android-auto-media/spec.md (canonical, promoted from parent)
  • Observation tracking: All phase artifacts logged to engram with topic keys sdd/auto-media-art-quality/{proposal|spec|design|tasks|apply-progress|verify-report|archive-report} for cross-session traceability

Archive Status: COMPLETE User Acceptance: Explicit (WARNING-1 reviewed and accepted) Next Action: Git commit & PR; recommend DHU verification before release

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