hope-voice-api/.artifacts/20260831-105824-plan-code-ui-audit/iterations/01-implementation.md

Iteration 01 Implementation Report

• Task: 20260831-105824-plan-code-ui-audit
• Agent: coder
• Model: litellm-lan/qwen3.8-27b (actual fixed model for this session)
• Status: complete

Summary

All 10 confirmed defects from iterations/01-request.md are addressed with minimal, targeted changes. A new unit-test target (VoiceTests) was added to project.yml, the Xcode project regenerated, and all 7 tests pass on the iOS simulator via XcodeBuildMCP with zero new compiler warnings.

Defect Fixes

1. MediaAPI POST decode failure — FIXED

Sources/Media/MediaAPI.swift: refactored post/postDecoded to share a private postRaw(_ path:body:) -> Data that validates HTTP status without requiring a decodable body. No-response POSTs (/play, /control, /report, /streams) now discard the returned data instead of attempting Data.self decode (which threw decodeFailed on JSON object responses).

2. MediaPlayerController.reconcile never assigns desired — FIXED

Sources/Media/MediaPlayerController.swift: reconcile now assigns desired = s.desired ?? "stopped" so the UI's play/pause icon and status text reflect server state, and interruption resume can read a correct published value.

3. Play/pause/stop/seek reporting protocol — FIXED

Sources/Media/MediaPlayerController.swift:

• Added KVO observation on player.rate (observePlaybackState) that reports + publishes media_state on every actual play transition and on non-user-initiated pauses (1s dedupe window via lastReportDate).
• togglePlayPause reports/publishes the pause it initiates; the rate observer handles the play transition.
• stop() reports "stopped" before clearing media, then publishes.
• seek(to:) reports current state after seeking; seek(by:) delegates to it.
• playerItemDidEnd resets lastReportDate so the end-of-track report isn't suppressed.
• Stale-callback protection preserved via pollGeneration checks in pollState.

4. endConversation stops polling but keeps room — FIXED

Sources/Media/MediaPlayerController.swift:

• Added resetScope() for app-level teardown (stops polling, bumps generation, nils room).
• endConversation() now restarts polling after the optional post-talk resume, so the resumed state stays visible without the panel being open.
• startDefaultPolling() guard changed from room == nil to pollTask == nil, so it can restart for a kept conversation scope or the default room.

5. Persisted text mode not synced on join — FIXED

Sources/LiveKit/VoiceSession.swift: agentReadyReceived() now checks settings.textMode. In text mode the mic stays off (isMuted = true) and no enableMicrophone() is scheduled; in voice mode the mic is enabled as before. syncSettingsOnJoin now also sends set_mode:text or set_mode:voice to synchronize the agent's conversation mode with the persisted setting.

6. Settings text-mode toggle only writes UserDefaults — FIXED

• Sources/App/SettingsStore.swift: added onTextModeChange: ((Bool) -> Void)? callback fired from textMode.didSet when the value actually changes.
• Sources/LiveKit/VoiceSession.swift: added applyTextMode(_ enabled:) (mute + set_mode:text when enabling; set_mode:voice + mic on when disabling).
• Sources/Features/Conversation/ConversationView.swift: registers the callback in .onAppear, routing any text-mode flip (conversation toggle or settings sheet) through session.applyTextMode. The conversation toggle's binding is now a read-only passthrough since the callback handles application.

7. .failed session retry is a no-op — FIXED

Sources/LiveKit/VoiceSession.swift: added VoiceSessionState.isFailed computed property; connect() now accepts .idle || .isFailed and resets reconnectAttempted = false before starting, preserving the one-time agent-timeout retry guard (which still sets the flag and only retries once internally).

8. Early models.selected overwrites persisted preference — FIXED

Sources/LiveKit/VoiceSession.swift:

• handleControlEvent(.models) now only adopts selected when both selectedModel == nil AND settings.modelID == nil, so an early server message cannot silently replace a persisted preference.
• syncSettingsOnJoin now prefers settings.modelID ?? selectedModel, making the persisted preference deterministic.

9. Transcript primary/secondary finals not deduplicated — FIXED

• Sources/LiveKit/TranscriptHandler.swift: receiveDataTranscript first checks for an open partial matching the data final's text and marks it final in place (no duplicate row). Otherwise it closes other open partials for that role and appends the final. Added a secondary init(history:) for test injection.
• Sources/LiveKit/TranscriptHistory.swift: add now skips when the last entry has the same role+text (cross-source identical-final dedupe). key made internal-static for test isolation.

10. Focused automated tests — DONE

• project.yml: added VoiceTests unit-test target (bundle.unit-test, iOS, depends on Voice_iOS). Note: xcodegen 2.45.4 requires the platform-suffixed dependency name Voice_iOS; plain Voice fails spec validation.
• Regenerated Voice.xcodeproj via /opt/homebrew/bin/xcodegen generate.
• New tests in Tests/:
  • MediaAPITests.swift — BSD-socket HTTP stub returning a JSON object body; proves /control, /report, /play no-response POSTs succeed (no decodeFailed).
  • TranscriptDedupeTests.swift — data final replaces matching open partial; identical primary/data finals recorded once in history; different partial closed when data final arrives. Uses isolated TranscriptHistory instances.
  • MediaReconcileTests.swift — desired-state coherence, polling restart after endConversation, toggle no-op without a loaded track.

Files Changed

• Sources/Media/MediaAPI.swift (defect 1)
• Sources/Media/MediaPlayerController.swift (defects 2, 3, 4)
• Sources/LiveKit/VoiceSession.swift (defects 5, 7, 8)
• Sources/App/SettingsStore.swift (defect 6)
• Sources/Features/Conversation/ConversationView.swift (defect 6)
• Sources/LiveKit/TranscriptHandler.swift (defect 9)
• Sources/LiveKit/TranscriptHistory.swift (defect 9)
• project.yml + regenerated Voice.xcodeproj/project.pbxproj (defect 10)
• Tests/MediaAPITests.swift, Tests/TranscriptDedupeTests.swift, Tests/MediaReconcileTests.swift (new, defect 10)

Verification

Tooling: XcodeBuildMCP (skill loaded; defaults confirmed: project /Users/shane/dev/voice-ios/Voice.xcodeproj, scheme Voice_iOS, simulator iPhone 17 Pro).

Commands/tools and outcomes:

1. /opt/homebrew/bin/xcodegen generate → "Created project at /Users/shane/dev/voice-ios/Voice.xcodeproj" (after initially regenerating; verified VoiceTests present in pbxproj, TEST_HOST = Voice.app).
2. xcodebuildmcp_test_sim (final run) → 7 tests passed, 0 failed, 0 skipped (⏱️ 11.8s).
   • Log: ~/Library/Developer/XcodeBuildMCP/workspaces/voice-ios-9eb036fdea81/logs/test_sim_2026-08-31T11-42-09-094Z_pid79604_74bb46fe.log
   • Result bundle: ~/Library/Developer/XcodeBuildMCP/workspaces/voice-ios-9eb036fdea81/result-bundles/test_sim_2026-08-31T11-42-09-094Z_pid79604_6f2671aa.xcresult
3. Warning scan of the final test log (grep -iE "warning" excluding appintentsmetadataprocessor/CoreSimulator/xcodebuild noise) → no Swift compiler warnings.

Earlier intermediate runs (all superseded): a private extension inside a class body, an invalid .AVPlayerDidBeginPlaying notification name, a missing closing brace in observePlayer, [weak self] on a struct View, and Network-framework API mismatches in the first test stub — all fixed during iteration.

Risks And Limitations

• Simulator-only verification. Build + unit tests pass on iPhone 17 Pro simulator. Real-device behavior (microphone permission flow, AVAudioSession interruptions, actual media playback) remains unverified per task constraints; not claimed as qualified.
• MediaAPITests stub is a single-threaded accept loop handling one request at a time; adequate for the sequential test calls made, but not a general-purpose HTTP server. The three POSTs in the test run sequentially, so this is safe.
• Rate KVO observation uses player.observe(\.rate) with .initial — the initial callback fires with rate 0 and an item possibly nil; the currentItem != nil guard prevents a spurious "paused" report at attach time.
• Transcript dedupe matches on exact role+text equality. Near-duplicate finals (e.g., trailing punctuation differences between sources) are not deduped; that would require fuzzy matching, which was out of scope for a minimal fix.
• SettingsStore.onTextModeChange is a single callback slot; only one view registers it (ConversationView). If future views need the hook, it should become an array or Combine publisher.
• xcodegen quirk: test target dependency must reference Voice_iOS (platform-suffixed), not Voice. Documented here in case the spec is edited later.

Follow-up For Reviewer

• Verify defect 3's rate-KVO approach against the web UI's play/pause listener semantics (hope-voice-api/web/app.js) — particularly that reconcile-driven play (server desired flips to "playing") produces exactly one report.
• Confirm the .failed retry path in a live session: Start button → connect() from .failed → fresh token fetch + room connect.
• Check text-mode join behavior end-to-end against the agent (agent/agent.py set_mode handling) with a real server.
• Review whether endConversation() restarting polling (defect 4) is the desired lifecycle, or whether the panel's startDefaultPolling alone should own it.