> For the complete documentation index, see [llms.txt](https://faction-os.gitbook.io/faction-os-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faction-os.gitbook.io/faction-os-docs/.spec_system/archive/sessions/phase04-session05-browser-audio-runtime-and-controls/implementation_summary.md). # Implementation Summary **Session ID**: `phase04-session05-browser-audio-runtime-and-controls` **Package**: `apps/web` **Completed**: 2026-05-29 **Duration**: 1.4 hours *** ## Overview Implemented the browser audio runtime and controls for the web cockpit. Audio is now opt-in by default, runtime status is tracked separately from persisted settings, synthetic Web Audio cues return structured outcomes, and visible equivalents cover muted, blocked, failed, unsupported, and unavailable states. The session stayed within `apps/web` and preserved the Phase 04 policy that file-backed voice, SFX, alert, celebration, and music assets remain blocked until later promotion gates approve them. *** ## Deliverables ### Files Created | File | Purpose | Lines | | --------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- | ----- | | `apps/web/src/lib/audioRuntime.ts` | Runtime result types, bounded volume helpers, duplicate cue guards, and visible-equivalent copy | \~220 | | `apps/web/src/store/useAudioRuntimeStore.ts` | Transient audio status, last cue, in-flight cue tracking, and cleanup helpers | \~140 | | `apps/web/tests/audioRuntime.test.ts` | Runtime and duplicate-guard coverage | \~170 | | `apps/web/tests/SettingsAudio.test.tsx` | Settings audio controls coverage | \~180 | | `.spec_system/specs/phase04-session05-browser-audio-runtime-and-controls/validation.md` | Session validation report | \~120 | | `.spec_system/specs/phase04-session05-browser-audio-runtime-and-controls/IMPLEMENTATION_SUMMARY.md` | Session summary | \~90 | ### Files Modified | File | Changes | | --------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------ | | `apps/web/src/lib/voiceSynth.ts` | Returned structured playback and unlock results, added cleanup-safe Web Audio node handling | | `apps/web/src/store/useSettingsStore.ts` | Defaulted audio to off, added bounded volume, and normalized stale snapshots | | `apps/web/src/store/useVoiceBarks.ts` | Routed hero barks through the runtime store with duplicate prevention and cleanup | | `apps/web/src/components/SettingsDrawer.tsx` | Added opt-in audio controls, runtime status, test cue, reset behavior, and visible fallback copy | | `apps/web/src/components/HeroDetailDrawer.tsx` | Routed Speak through runtime results and surfaced disabled and last-cue copy | | `apps/web/src/components/CommandPalette.tsx` | Preserved audio toggle behavior with refreshed runtime status and toast feedback | | `apps/web/src/lib/commandPalette.ts` | Renamed audio command labels and details for explicit synthetic audio cues | | `apps/web/src/data/mediaCatalog.ts` | Kept file-backed audio catalog records blocked | | `apps/web/tests/useSettingsStore.test.ts` | Updated persistence, reset, and malformed snapshot coverage | | `apps/web/tests/HeroDetailDrawer.test.tsx` | Updated Speak behavior coverage for runtime results and duplicate clicks | | `apps/web/tests/CommandPalette.test.tsx` | Updated audio command label and toggle expectations | | `apps/web/README_web.md` | Documented opt-in audio behavior and file-backed media deferral | | `docs/media-assets.md` | Added Session 05 browser audio runtime notes | | `.spec_system/specs/phase04-session05-browser-audio-runtime-and-controls/spec.md` | Marked the session complete | | `.spec_system/PRD/phase_04/PRD_phase_04.md` | Marked Session 05 complete in the phase tracker | | `.spec_system/PRD/PRD.md` | Updated the Phase 04 status map | | `.spec_system/state.json` | Marked Session 05 complete in workflow state | | `apps/web/package.json` | Bumped the package patch version | *** ## Technical Decisions 1. **Separate durable settings from transient runtime state**: the persisted store keeps only user preferences, while the runtime store tracks browser support, in-flight cues, and last-cue feedback. 2. **Return structured runtime outcomes**: callers handle muted, blocked, failed, unsupported, playing, locked, unlocked, and unavailable states without relying on exceptions or silent no-ops. 3. **Keep audio synthetic and local**: the session only uses current Web Audio barks and preserves the file-backed audio blocker policy. *** ## Test Results | Metric | Value | | -------- | ------------- | | Tests | 5 files | | Passed | 88 tests | | Coverage | Not generated | *** ## Lessons Learned 1. Runtime audio state needs a separate transient store to keep browser-policy outcomes out of persisted settings. 2. Visible equivalent copy matters as much as playback success for an opt-in audio feature. *** ## Future Considerations Items for future sessions: 1. Promote file-backed media only after provenance, rights, metadata, and budget gates approve it. 2. Expand public-demo media parity in the next Phase 04 session. *** ## Session Statistics * **Tasks**: 22 completed * **Files Created**: 6 * **Files Modified**: 18 * **Tests Added**: 2 * **Blockers**: 0 resolved --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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