docs(02-05): complete UI integration plan - avatars, greetings, companion area

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/REQUIREMENTS.md

@@ -62,8 +62,8 @@ Requirements for initial release (MVP). Each maps to roadmap phases.
 
 - [x] **ASST-01**: Build-Script `scripts/generate-assets.ts` generiert 4 Character Sheets + 4 Avatare + 1 Stil-Referenz
 - [x] **ASST-02**: Generierte Assets in `src/assets/companions/` und `src/assets/style-reference/` eingecheckt
-- [ ] **ASST-03**: Willkommens-Screen zeigt echte generierte Avatare statt Platzhalter
+- [x] **ASST-03**: Willkommens-Screen zeigt echte generierte Avatare statt Platzhalter
-- [ ] **ASST-04**: Companion-Area in Übung zeigt Avatar der gewählten Figur
+- [x] **ASST-04**: Companion-Area in Übung zeigt Avatar der gewählten Figur
 
 ### Forest
 
@@ -181,8 +181,8 @@ Which phases cover which requirements. Updated during roadmap creation.
 | GAPI-06 | Phase 2 | Complete |
 | ASST-01 | Phase 2 | Complete |
 | ASST-02 | Phase 2 | Complete |
-| ASST-03 | Phase 2 | Pending |
+| ASST-03 | Phase 2 | Complete |
-| ASST-04 | Phase 2 | Pending |
+| ASST-04 | Phase 2 | Complete |
 | COMP-01 | Phase 2 | Complete |
 | COMP-02 | Phase 2 | Complete |
 | COMP-03 | Phase 2 | Complete |

.planning/ROADMAP.md

@@ -56,7 +56,7 @@ Plans:
 - [x] 02-02-PLAN.md — Fallback texts (greetings, forest comments, letter intros) and fallback SVG images
 - [x] 02-03-PLAN.md — IndexedDB store accessors, build script for asset generation, generate all character assets
 - [x] 02-04-PLAN.md — Companion text module (getGreeting, getLetterIntro, getForestComment) with API-first fallback
-- [ ] 02-05-PLAN.md — Wire avatars into welcome screen, companion greeting on forest screen, visual verification
+- [x] 02-05-PLAN.md — Wire avatars into welcome screen, companion greeting on forest screen, visual verification
 
 ### Phase 3: Komplettes Spielerlebnis
 **Goal**: Alle 3 Uebungsphasen verbunden, Wald waechst visuell, Stufen 1–6 vollstaendig spielbar

.planning/STATE.md

@@ -2,15 +2,15 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-status: executing
+status: verifying
-stopped_at: Completed 02-03-PLAN.md
+stopped_at: Completed 02-05-PLAN.md
-last_updated: "2026-03-29T10:12:19.423Z"
+last_updated: "2026-03-29T10:16:57.999Z"
 last_activity: 2026-03-29
 progress:
   total_phases: 4
-  completed_phases: 1
+  completed_phases: 2
   total_plans: 10
-  completed_plans: 9
+  completed_plans: 10
   percent: 0
 ---
 
@@ -27,7 +27,7 @@ See: .planning/PROJECT.md (updated 2026-03-29)
 
 Phase: 02 (gemini-integration-asset-pipeline) — EXECUTING
 Plan: 5 of 5
-Status: Ready to execute
+Status: Phase complete — ready for verification
 Last activity: 2026-03-29
 
 Progress: [░░░░░░░░░░] 0%
@@ -61,6 +61,7 @@ Progress: [░░░░░░░░░░] 0%
 | Phase 02 P01 | 3min | 1 tasks | 6 files |
 | Phase 02 P04 | 1min | 1 tasks | 2 files |
 | Phase 02 P03 | 6min | 2 tasks | 12 files |
+| Phase 02 P05 | 3min | 3 tasks | 7 files |
 
 ## Accumulated Context
 
@@ -86,6 +87,7 @@ Recent decisions affecting current work:
 - [Phase 02]: Each companion function independently checks config and rate limits (no shared wrapper) for clarity
 - [Phase 02]: Fixed imageModel name: gemini-3.1-flash-preview-image -> gemini-3.1-flash-image-preview (was 404)
 - [Phase 02]: Asset generation script skips existing files for idempotent re-runs
+- [Phase 02]: Vite static imports for avatar PNGs with onerror emoji fallback pattern
 
 ### Pending Todos
 
@@ -97,6 +99,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-29T10:12:19.416Z
+Last session: 2026-03-29T10:16:57.992Z
-Stopped at: Completed 02-03-PLAN.md
+Stopped at: Completed 02-05-PLAN.md
 Resume file: None

.planning/phases/02-gemini-integration-asset-pipeline/02-05-SUMMARY.md

@@ -0,0 +1,128 @@
+---
+phase: 02-gemini-integration-asset-pipeline
+plan: 05
+subsystem: ui
+tags: [vite-assets, companion, avatar, greeting, fallback]
+
+requires:
+  - phase: 02-03
+    provides: "Generated avatar PNGs in src/assets/companions/"
+  - phase: 02-04
+    provides: "getGreeting() companion text function with API/fallback"
+provides:
+  - "Avatar images displayed on welcome screen companion cards"
+  - "Companion greeting with avatar on forest screen for returning users"
+  - "Companion avatar visible in lesson screen"
+  - "Emoji fallback when avatar images fail to load"
+affects: [03-lesson-phases, 04-forest-rewards]
+
+tech-stack:
+  added: []
+  patterns: ["Vite static import for PNG asset URL resolution", "onerror img fallback to emoji span"]
+
+key-files:
+  created:
+    - src/vite-env.d.ts
+  modified:
+    - src/companion/characters.ts
+    - src/ui/screens.ts
+    - src/app.ts
+    - src/styles/main.css
+    - index.html
+    - src/companion/fallbacks.ts
+
+key-decisions:
+  - "Vite static imports for avatar PNGs (hashed URLs in production builds)"
+  - "onerror handler hides img and shows emoji fallback for graceful degradation"
+  - "Greeting text fetched async after avatar shown immediately"
+
+patterns-established:
+  - "Avatar fallback: img with onerror hiding img and showing sibling emoji span"
+  - "Companion area: reusable .companion-area CSS class for avatar+text layouts"
+
+requirements-completed: [ASST-03, ASST-04]
+
+duration: 3min
+completed: 2026-03-29
+---
+
+# Phase 02 Plan 05: UI Integration Summary
+
+**Welcome screen avatar images via Vite static imports with emoji fallback, companion greeting on forest screen, and companion avatar in lesson screen**
+
+## Performance
+
+- **Duration:** 3 min
+- **Started:** 2026-03-29T10:13:07Z
+- **Completed:** 2026-03-29T10:16:07Z
+- **Tasks:** 3 (2 auto + 1 checkpoint auto-approved)
+- **Files modified:** 7
+
+## Accomplishments
+- Welcome screen companion cards now show real generated avatar PNGs instead of emoji
+- Forest screen displays companion avatar with AI-generated or fallback greeting text for returning users
+- Lesson screen shows companion avatar above the typing exercise area
+- Emoji fallback via onerror handler ensures graceful degradation when images fail
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Add avatar URLs to companion definitions and update welcome screen** - `2cf7687` (feat)
+2. **Task 2: Add companion greeting to forest screen and avatar to lesson screen** - `57a929b` (feat)
+3. **Task 3: Visual verification of Phase 2 integration** - auto-approved checkpoint, no separate commit
+
+## Files Created/Modified
+- `src/vite-env.d.ts` - Vite client types + PNG module declaration for TypeScript
+- `src/companion/characters.ts` - Extended CompanionDefinition with avatarUrl, added static avatar imports
+- `src/ui/screens.ts` - Avatar img with emoji fallback in welcome cards, companion avatar in lesson screen
+- `src/app.ts` - Companion greeting display (avatar + async text) on forest screen for returning users
+- `src/styles/main.css` - companion-card__avatar (80px round), companion-area layout (48px avatar + text)
+- `index.html` - Added forest-greeting and lesson-companion HTML containers
+- `src/companion/fallbacks.ts` - Fixed noUncheckedIndexedAccess errors with nullish coalescing
+
+## Decisions Made
+- Used Vite static imports (import ... from "*.png") for avatar URLs to get hashed URLs in production builds
+- onerror handler on img hides broken image and shows emoji sibling as fallback (per D-06)
+- Greeting text fetched asynchronously; avatar shows immediately while text loads
+- Lesson screen shows avatar only (no companion text per D-14 -- Phase 3 adds letter intros)
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 3 - Blocking] Added vite-env.d.ts for PNG import type declarations**
+- **Found during:** Task 1
+- **Issue:** TypeScript cannot resolve .png imports without type declarations
+- **Fix:** Created src/vite-env.d.ts with Vite client reference and PNG module declaration
+- **Files modified:** src/vite-env.d.ts
+- **Verification:** tsc --noEmit passes for new imports
+- **Committed in:** 2cf7687 (Task 1 commit)
+
+**2. [Rule 3 - Blocking] Fixed noUncheckedIndexedAccess errors in fallbacks.ts**
+- **Found during:** Task 2
+- **Issue:** Pre-existing TS errors in fallbacks.ts prevented npm run build (array indexing with noUncheckedIndexedAccess)
+- **Fix:** Added nullish coalescing (??) with sensible default strings for array access
+- **Files modified:** src/companion/fallbacks.ts
+- **Verification:** npm run build succeeds
+- **Committed in:** 57a929b (Task 2 commit)
+
+---
+
+**Total deviations:** 2 auto-fixed (2 blocking)
+**Impact on plan:** Both fixes necessary for build to succeed. No scope creep.
+
+## Issues Encountered
+None beyond the auto-fixed blocking issues.
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Phase 02 (Gemini Integration + Asset Pipeline) is now complete
+- All companion avatars, greetings, and visual integration are wired up
+- Ready for Phase 03 (lesson phases with letter introductions, forest rewards)
+
+---
+*Phase: 02-gemini-integration-asset-pipeline*
+*Completed: 2026-03-29*