docs(04-04): complete audio wiring plan

- SUMMARY.md with all task commits and decisions - STATE.md updated to 100% progress, phase 04 complete - ROADMAP.md updated with plan progress Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-29 18:23:45 +02:00
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+---
+phase: 04-polish-audio
+plan: 04
+subsystem: audio, ui
+tags: [web-audio-api, web-speech-api, audio-integration, fire-and-forget]
+
+# Dependency graph
+requires:
+  - phase: 04-polish-audio/04-01
+    provides: "Audio module (sounds.ts, speech.ts) with playCorrectSound, playRewardSound, playForestElementSound, speakText"
+  - phase: 04-polish-audio/04-02
+    provides: "Enhanced animations (leaf-fall, stardust, companion float)"
+  - phase: 04-polish-audio/04-03
+    provides: "Export/import/reset functionality in parent area"
+provides:
+  - "Audio fully wired into lesson (correct keypress sound), reward (melody + speech), forest (element glitter sound), app (greeting speech)"
+  - "Complete Phase 4 polish experience ready for end-user testing"
+affects: []
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "Fire-and-forget audio calls at interaction points (no await, no try/catch at call site)"
+
+key-files:
+  created: []
+  modified:
+    - src/ui/screens.ts
+    - src/forest/reward.ts
+    - src/forest/scene.ts
+    - src/app.ts
+
+key-decisions:
+  - "Audio calls are fire-and-forget at all touch points -- sound/speech modules handle settings checks and errors internally"
+
+patterns-established:
+  - "Audio integration pattern: import sound function, call at interaction point, no error handling needed at call site"
+
+requirements-completed: [PLSH-01, PLSH-02, PLSH-03, PLSH-04, PLSH-05, AUDI-01, AUDI-02, AUDI-03, AUDI-04, AUDI-05, PRNT-05, PRNT-06, PRNT-07]
+
+# Metrics
+duration: 1min
+completed: 2026-03-29
+---
+
+# Phase 04 Plan 04: Audio Wiring Summary
+
+**Web Audio sounds wired into lesson/reward/forest screens with Web Speech API for companion text readout**
+
+## Performance
+
+- **Duration:** 1 min
+- **Started:** 2026-03-29T16:20:59Z
+- **Completed:** 2026-03-29T16:22:00Z
+- **Tasks:** 2 (1 auto + 1 checkpoint auto-approved)
+- **Files modified:** 4
+
+## Accomplishments
+- playCorrectSound() fires on every correct keypress in both letter and word exercise modes
+- playRewardSound() plays ascending melody when reward image appears, speakText() reads companion comment aloud
+- playForestElementSound() triggers glitter sound when new forest element renders with animation
+- speakText() reads companion greeting on forest screen for returning users
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Wire audio + speech into lesson, reward, forest, and app** - `b453efe` (feat)
+2. **Task 2: End-to-end verification of Phase 4** - auto-approved checkpoint
+
+## Files Created/Modified
+- `src/ui/screens.ts` - Added playCorrectSound import and calls in letter + word exercise keydown handlers
+- `src/forest/reward.ts` - Added playRewardSound + speakText imports and calls in initRewardScreen
+- `src/forest/scene.ts` - Added playForestElementSound import and call on new element render
+- `src/app.ts` - Added speakText import and call for greeting text, sorted imports per biome rules
+
+## Decisions Made
+- Audio calls are fire-and-forget at all touch points -- sound/speech modules handle settings checks and errors internally
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+None
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Phase 4 (polish-audio) is fully complete
+- All audio, animation, responsive, error handling, and export/import features are wired and ready
+- App is ready for end-user testing with the child
+
+---
+*Phase: 04-polish-audio*
+*Completed: 2026-03-29*
+
+## Self-Check: PASSED