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Zauberwald/.planning/phases/04-polish-audio/04-VERIFICATION.md
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phase, verified, status, score, human_verification
phase verified status score human_verification
04-polish-audio 2026-03-29T18:25:00Z human_needed 5/5 must-haves verified
test expected why_human
Play a lesson and verify sounds play on correct keypress, reward screen, and new forest element Short beep on correct key, ascending melody on reward, glitter sound on new element Web Audio API sounds cannot be verified without a running browser
test expected why_human
Toggle mute button, reload, verify mute state persists Icon changes, no sounds when muted, state survives reload Requires interactive browser session with audio output
test expected why_human
Enable speechEnabled in settings, verify companion text is read aloud in German German speech via Web Speech API for companion greeting and reward comment Speech synthesis requires audio output and browser TTS engine
test expected why_human
Export progress, clear browser data, import the file, verify restoration JSON file downloads, import restores progress after data loss Requires interactive file dialog and browser data clearing
test expected why_human
Verify no unhandled exceptions during normal lesson flow No error overlay appears, console clean during normal usage Requires running app end-to-end in browser
test expected why_human
Verify leaf-fall sway animation and stardust particles visually Letters sway side-to-side like leaves, sparkle particles on correct keypress Visual animation quality cannot be verified programmatically
test expected why_human
Resize to <700px and verify responsive layout Keyboard shrinks, fonts scale, grid adjusts Visual layout verification requires human judgment

Phase 04: Polish & Audio Verification Report

Phase Goal: Visuell und auditiv angenehmes Erlebnis, bereit zum Testen mit dem Kind Verified: 2026-03-29T18:25:00Z Status: human_needed Re-verification: No -- initial verification

Goal Achievement

Observable Truths (from Success Criteria)

# Truth Status Evidence
1 Sounds spielen bei richtigem Tastendruck, Belohnung und neuem Waldelement; Mute-Button funktioniert und Zustand bleibt nach Reload VERIFIED (code) playCorrectSound called in screens.ts:217,293; playRewardSound in reward.ts:204; playForestElementSound in scene.ts:48; mute-btn wired in main.ts:24-54 with getSettings/saveSettings persistence
2 Buchstaben fallen sanft (keine ruckartigen Animationen), Sternenstaub-Animation erscheint bei Erfolg VERIFIED (code) @keyframes leaf-fall in main.css:331 with translateX sway; @keyframes stardust in main.css:388 on .falling-letter--dissolve pseudo-elements
3 Sprachausgabe liest Companion-Text vor wenn aktiviert (Web Speech API, Deutsch) VERIFIED (code) speakText in speech.ts:31-53 checks speechEnabled, uses de-DE, rate 0.9, pitch 1.1; called from reward.ts:208 and app.ts:219
4 Export und Import funktionieren: Exportieren, Browser-Daten loeschen, Importieren, Fortschritt wiederhergestellt VERIFIED (code) exportData in parent.ts:242-262 creates JSON blob download; importData in parent.ts:267-301 validates + confirms + saves; resetAllData in parent.ts:318-324 double-confirms + clears 5 stores
5 Keine unbehandelten Exceptions in der Browser-Konsole bei normalem Gebrauch VERIFIED (code) Global error + unhandledrejection handlers in main.ts:6-16 show error-overlay; all audio functions use try/catch with silent fallback

Score: 5/5 truths verified at code level

Required Artifacts

Artifact Expected Status Details
src/audio/sounds.ts Web Audio API sound effects VERIFIED 152 lines; exports playCorrectSound, playRewardSound, playForestElementSound, initAudioOnInteraction; all check audioEnabled via getSettings
src/audio/speech.ts Web Speech API text-to-speech VERIFIED 53 lines; exports speakText; checks speechEnabled, uses de-DE, rate 0.9, pitch 1.1, async voice loading
src/ui/parent.ts Export/Import/Reset functions VERIFIED 344 lines; exportData, importData (with validation), resetAllData (double confirm, 5 stores); all wired to buttons in loadParentData
index.html Mute button + error overlay + data buttons VERIFIED mute-btn at line 194, error-overlay at line 186, export/import/reset buttons at lines 172-177
src/styles/main.css Animations + responsive + error overlay styles VERIFIED leaf-fall, stardust, companion-float keyframes; prefers-reduced-motion at line 1038; responsive @700px at line 1051; error-overlay + mute-btn styles
src/main.ts Global error handler + mute button wiring VERIFIED Error handlers at lines 6-16; mute toggle with persistence at lines 24-54; AudioContext init on first interaction at lines 58-64
src/ui/screens.ts playCorrectSound on correct keypress VERIFIED Import at line 22; calls at lines 217, 293 (letter + word mode)
src/forest/reward.ts playRewardSound + speakText VERIFIED Imports at lines 23-24; playRewardSound at line 204; speakText at line 208
src/forest/scene.ts playForestElementSound on new element VERIFIED Import at line 4; call at line 48
src/app.ts speakText for greeting VERIFIED Import at line 1; call at line 219
src/types.ts speechEnabled in Settings VERIFIED speechEnabled: boolean at line 56
From To Via Status Details
src/audio/sounds.ts src/storage/db.ts getSettings check for audioEnabled WIRED isAudioEnabled() at line 24-32 calls getSettings, checks audioEnabled
src/audio/speech.ts src/storage/db.ts getSettings check for speechEnabled WIRED speakText() at line 35-37 calls getSettings, checks speechEnabled
src/ui/screens.ts src/audio/sounds.ts import + call on correct keypress WIRED import at line 22, calls at lines 217, 293
src/forest/reward.ts src/audio/sounds.ts import + call on reward WIRED import at line 23, call at line 204
src/forest/reward.ts src/audio/speech.ts import + speakText for companion WIRED import at line 24, call at line 208
src/forest/scene.ts src/audio/sounds.ts import + call on element appear WIRED import at line 4, call at line 48
src/ui/parent.ts src/storage/db.ts getProgress/getSettings for export, save for import, clear for reset WIRED exportData uses getProgress+getSettings; importData uses saveProgress+saveSettings; resetAllData clears 5 stores
src/main.ts src/audio/sounds.ts initAudioOnInteraction on user interaction WIRED import at line 3, calls at lines 37, 59
index.html src/styles/main.css error-overlay element + styles WIRED error-overlay div in HTML at line 186, styles in CSS at line 999

Data-Flow Trace (Level 4)

Artifact Data Variable Source Produces Real Data Status
src/audio/sounds.ts audioEnabled getSettings(db) from IndexedDB Yes -- reads persisted Settings FLOWING
src/audio/speech.ts speechEnabled getSettings(db) from IndexedDB Yes -- reads persisted Settings FLOWING
src/ui/parent.ts (export) progress, settings getProgress(db), getSettings(db) Yes -- reads from IndexedDB stores FLOWING
src/ui/parent.ts (import) parsed JSON file.text() + JSON.parse Yes -- reads user-uploaded file FLOWING
src/main.ts (mute) audioEnabled getSettings(db) + saveSettings Yes -- reads/writes IndexedDB FLOWING

Behavioral Spot-Checks

Behavior Command Result Status
TypeScript compiles npx tsc --noEmit Clean, no errors PASS
All tests pass npx vitest run 85 tests passed across 7 files PASS
Audio modules have correct exports grep for exports playCorrectSound, playRewardSound, playForestElementSound, initAudioOnInteraction, speakText all exported PASS
Mute button in HTML grep index.html id="mute-btn" found at line 194 PASS
Error overlay in HTML grep index.html id="error-overlay" found at line 186 with reload button PASS
Export/Import/Reset buttons grep index.html export-btn, import-btn, reset-btn found at lines 172-177 PASS
Audio wired into all screens grep for imports playCorrectSound in screens.ts, playRewardSound in reward.ts, playForestElementSound in scene.ts, speakText in app.ts+reward.ts PASS

Requirements Coverage

Requirement Source Plan Description Status Evidence
AUDI-01 04-01, 04-04 Richtiger Tastendruck: Kurzer heller Ton (800Hz, 0.1s) SATISFIED playCorrectSound in sounds.ts (800Hz sine, 0.1s); called from screens.ts on correct keypress
AUDI-02 04-01, 04-04 Belohnung: Aufsteigende Tonfolge (0.8s) SATISFIED playRewardSound in sounds.ts (C5-E5-G5-C6, 0.8s); called from reward.ts
AUDI-03 04-01, 04-04 Neues Waldelement: Glitzer-Sound SATISFIED playForestElementSound in sounds.ts (filtered white noise, 0.5s); called from scene.ts
AUDI-04 04-01 Mute-Button sichtbar, Zustand persistiert SATISFIED Mute button in index.html, wired in main.ts with getSettings/saveSettings persistence
AUDI-05 04-01, 04-04 Optionale Sprachausgabe via Web Speech API (Deutsch) SATISFIED speakText in speech.ts (de-DE, rate 0.9, pitch 1.1); called from app.ts and reward.ts
PLSH-01 04-02 Fallende Buchstaben als sanft schwebende CSS-Animation SATISFIED @keyframes leaf-fall with sinusoidal translateX sway in main.css
PLSH-02 04-02 Erfolg-Animation: Sternenstaub/Glitzer via CSS particles SATISFIED @keyframes stardust on .falling-letter--dissolve ::before/::after in main.css
PLSH-03 04-02 Begleitfigur-Avatar: Float-Animation SATISFIED @keyframes companion-float on .companion-area__avatar in main.css
PLSH-04 04-02 Responsive bis 700px Breite SATISFIED @media (max-width: 700px) in main.css with keyboard/font/grid adjustments
PLSH-05 04-02 Globaler Error-Handler: Kindgerechte Fehlermeldung SATISFIED Error + unhandledrejection handlers in main.ts; error-overlay with tree emoji + German message in index.html
PRNT-05 04-03 Export: Fortschritt als JSON (ohne Blobs) SATISFIED exportData in parent.ts creates JSON with progress+settings only, downloads as zauberwald-backup.json
PRNT-06 04-03 Import: JSON hochladen mit Validierung SATISFIED importData in parent.ts validates structure, confirms overwrite, saves+reloads
PRNT-07 04-03 Reset: Alles loeschen mit doppelter Bestaetigung SATISFIED resetAllData in parent.ts with two confirm() dialogs, clears all 5 stores, reloads

Anti-Patterns Found

File Line Pattern Severity Impact
src/ui/parent.ts multiple noNonNullAssertion (16 instances) Info Pre-existing project-wide pattern for DOM element access; not introduced by this phase; not a functional issue

No TODOs, FIXMEs, placeholders, or stub implementations found in any phase 04 artifacts.

Human Verification Required

1. Audio Playback at Correct Touch Points

Test: Start a lesson, type correct letters. Complete a lesson to see reward. Return to forest when new element appears. Expected: Short beep on each correct key, ascending melody on reward screen, glitter sound when new forest element renders. Why human: Web Audio API sounds require a browser with audio output.

2. Mute Button Persistence

Test: Click mute button (bottom-right corner), verify icon changes. Reload page, verify mute state persists. Expected: Icon toggles between speaker and muted speaker; state survives page reload. Why human: Requires interactive browser session to verify visual state and persistence.

3. Speech Synthesis for Companion Text

Test: Enable speechEnabled in settings (currently defaults to false), navigate to forest screen or complete a lesson. Expected: Companion greeting and reward comment read aloud in German via Web Speech API. Why human: TTS requires audio output and a browser with speech synthesis support.

4. Export/Import Round-Trip

Test: Open parent area (code 1234), click "Fortschritt exportieren", clear browser data (Application > Clear Storage), click "Fortschritt importieren" and select the exported file. Expected: JSON file downloads, after import progress is restored (current level, sessions, character selection). Why human: Requires interactive file dialogs and manual browser data clearing.

5. Leaf-Fall and Stardust Animation Quality

Test: Start a lesson, observe falling letters. Type correct letters and observe dissolve animation. Expected: Letters sway side-to-side like leaves (not just float). Stardust sparkle particles appear on correct keypress dissolve. Why human: Animation quality and smoothness require visual assessment.

6. Responsive Layout at 700px

Test: Resize browser window to less than 700px width. Expected: Keyboard keys shrink, fonts scale down, grid columns adjust. Why human: Layout responsiveness requires visual verification.

7. Error Overlay on Exception

Test: Open browser console and run throw new Error('test'). Expected: Child-friendly overlay with tree emoji and "Oh, der Wald braucht kurz eine Pause..." message appears. Reload button works. Why human: Requires running browser with dev console.

Gaps Summary

No code-level gaps found. All 13 requirements are satisfied at the implementation level. All artifacts exist, are substantive (no stubs), are properly wired, and data flows through the connections.

The remaining verification is purely behavioral -- confirming that audio plays correctly, animations look smooth, and the export/import round-trip works in a real browser. These items cannot be verified programmatically and require human testing.


Verified: 2026-03-29T18:25:00Z Verifier: Claude (gsd-verifier)