docs(01-02): complete screen management + onboarding plan

- Add 01-02-SUMMARY.md with execution results
- Update STATE.md: plan 3/5, 40% progress, decisions logged
- Update ROADMAP.md with plan progress
- Mark requirements FNDN-05, ONBD-01-04 complete

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

.planning/REQUIREMENTS.md

@@ -13,14 +13,14 @@ Requirements for initial release (MVP). Each maps to roadmap phases.
 - [x] **FNDN-02**: Projektstruktur gemäss Spec Abschnitt 13 (alle Verzeichnisse + Dateien)
 - [x] **FNDN-03**: Alle TypeScript-Interfaces definiert (Progress, ForestElement, CompanionAssets, Level, etc.)
 - [x] **FNDN-04**: IndexedDB-Wrapper mit allen Stores (progress, companionAssets, styleReference, forestElements, settings)
-- [ ] **FNDN-05**: Screen-Management: 5 Screens (welcome, forest, lesson, reward, parent), CSS fade Transitions
+- [x] **FNDN-05**: Screen-Management: 5 Screens (welcome, forest, lesson, reward, parent), CSS fade Transitions
 
 ### Onboarding
 
-- [ ] **ONBD-01**: Willkommens-Screen mit Begleitfigur-Auswahl (4 Karten mit Avataren)
+- [x] **ONBD-01**: Willkommens-Screen mit Begleitfigur-Auswahl (4 Karten mit Avataren)
-- [ ] **ONBD-02**: Tastatur-Layout-Auswahl (DE/CH) im Willkommens-Screen
+- [x] **ONBD-02**: Tastatur-Layout-Auswahl (DE/CH) im Willkommens-Screen
-- [ ] **ONBD-03**: Auswahl persistiert in IndexedDB, wird nach Reload wiederhergestellt
+- [x] **ONBD-03**: Auswahl persistiert in IndexedDB, wird nach Reload wiederhergestellt
-- [ ] **ONBD-04**: "Los geht's" führt direkt zur Wald-Übersicht (kein Ladescreen)
+- [x] **ONBD-04**: "Los geht's" führt direkt zur Wald-Übersicht (kein Ladescreen)
 
 ### Keyboard
 
@@ -153,11 +153,11 @@ Which phases cover which requirements. Updated during roadmap creation.
 | FNDN-02 | Phase 1 | Complete |
 | FNDN-03 | Phase 1 | Complete |
 | FNDN-04 | Phase 1 | Complete |
-| FNDN-05 | Phase 1 | Pending |
+| FNDN-05 | Phase 1 | Complete |
-| ONBD-01 | Phase 1 | Pending |
+| ONBD-01 | Phase 1 | Complete |
-| ONBD-02 | Phase 1 | Pending |
+| ONBD-02 | Phase 1 | Complete |
-| ONBD-03 | Phase 1 | Pending |
+| ONBD-03 | Phase 1 | Complete |
-| ONBD-04 | Phase 1 | Pending |
+| ONBD-04 | Phase 1 | Complete |
 | KYBD-01 | Phase 1 | Pending |
 | KYBD-02 | Phase 1 | Pending |
 | KYBD-03 | Phase 1 | Pending |

.planning/ROADMAP.md

@@ -33,7 +33,7 @@ Decimal phases appear between their surrounding integers in numeric order.
 
 Plans:
 - [x] 01-01-PLAN.md — Vite scaffold, project structure, CSS palette, TypeScript interfaces, IndexedDB wrapper
-- [ ] 01-02-PLAN.md — Screen management, welcome screen, companion/layout selection, onboarding persistence
+- [x] 01-02-PLAN.md — Screen management, welcome screen, companion/layout selection, onboarding persistence
 - [ ] 01-03-PLAN.md — QWERTZ keyboard component with finger colors, level definitions 1-6
 - [ ] 01-04-PLAN.md — Typing exercise engine (TDD), adaptive tempo, lesson screen UI
 - [ ] 01-05-PLAN.md — Forest overview with level map, full app flow integration, human verification

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: executing
-stopped_at: Completed 01-01-PLAN.md
+stopped_at: Completed 01-02-PLAN.md
-last_updated: "2026-03-29T09:04:30.178Z"
+last_updated: "2026-03-29T09:07:53.267Z"
 last_activity: 2026-03-29
 progress:
   total_phases: 4
   completed_phases: 0
   total_plans: 5
-  completed_plans: 1
+  completed_plans: 2
   percent: 0
 ---
 
@@ -26,7 +26,7 @@ See: .planning/PROJECT.md (updated 2026-03-29)
 ## Current Position
 
 Phase: 01 (grundger-st-tippmechanik) — EXECUTING
-Plan: 2 of 5
+Plan: 3 of 5
 Status: Ready to execute
 Last activity: 2026-03-29
 
@@ -53,6 +53,7 @@ Progress: [░░░░░░░░░░] 0%
 
 *Updated after each plan completion*
 | Phase 01 P01 | 4min | 2 tasks | 22 files |
+| Phase 01 P02 | 2min | 2 tasks | 6 files |
 
 ## Accumulated Context
 
@@ -65,6 +66,8 @@ Recent decisions affecting current work:
 - All phases: Gemini REST via fetch(), key in public/config.json (private use acceptable)
 - Phase 2+: Vorab-generierte Character Assets per Build-Script (kein Onboarding-Warten)
 - [Phase 01]: openDB accepts optional name param for test isolation with fake-indexeddb
+- [Phase 01]: Screen transitions use CSS opacity+display toggle, no router library
+- [Phase 01]: Companion cards rendered dynamically from data array, not hardcoded HTML
 
 ### Pending Todos
 
@@ -76,6 +79,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-29T09:04:30.171Z
+Last session: 2026-03-29T09:07:53.261Z
-Stopped at: Completed 01-01-PLAN.md
+Stopped at: Completed 01-02-PLAN.md
 Resume file: None

.planning/phases/01-grundger-st-tippmechanik/01-02-SUMMARY.md

@@ -0,0 +1,103 @@
+---
+phase: 01-grundger-st-tippmechanik
+plan: 02
+subsystem: ui
+tags: [screen-management, onboarding, indexeddb, companion-selection, css-transitions]
+
+requires:
+  - phase: 01-01
+    provides: "IndexedDB storage layer (openDB, getProgress, saveProgress), types, CSS design system"
+provides:
+  - "Screen management (showScreen, initApp)"
+  - "Welcome screen with companion selection and layout toggle"
+  - "Companion definitions (fee/einhorn/fuchs/eule)"
+  - "Onboarding flow with IndexedDB persistence"
+affects: [01-03, 01-04, 01-05]
+
+tech-stack:
+  added: []
+  patterns:
+    - "Screen routing via CSS class toggle (.screen--active)"
+    - "DOM-based UI generation from data arrays (companion cards)"
+    - "Event delegation for toggle groups (layout buttons)"
+
+key-files:
+  created:
+    - src/app.ts
+    - src/companion/characters.ts
+    - src/ui/screens.ts
+  modified:
+    - src/main.ts
+    - index.html
+    - src/styles/main.css
+
+key-decisions:
+  - "Screen transitions use CSS opacity + display toggle, no router library"
+  - "Companion cards rendered dynamically from characters.ts array, not hardcoded in HTML"
+
+patterns-established:
+  - "showScreen(name) pattern: remove .screen--active from all, add to target by id"
+  - "initApp checks IndexedDB progress to route returning users directly to forest"
+
+requirements-completed: [FNDN-05, ONBD-01, ONBD-02, ONBD-03, ONBD-04]
+
+duration: 2min
+completed: 2026-03-29
+---
+
+# Phase 01 Plan 02: Screen Management + Onboarding Summary
+
+**CSS screen management with companion selection (4 characters), DE/CH layout toggle, and IndexedDB-persisted onboarding flow**
+
+## Performance
+
+- **Duration:** 2 min
+- **Started:** 2026-03-29T09:05:08Z
+- **Completed:** 2026-03-29T09:07:06Z
+- **Tasks:** 2
+- **Files modified:** 6
+
+## Accomplishments
+- Screen management system with CSS fade transitions between 5 app screens
+- Welcome screen with 4 companion cards (Lila/Stella/Finn/Elsa) showing emoji and name
+- DE/CH keyboard layout toggle with active state styling
+- Full onboarding persistence: companion + layout saved to IndexedDB, returning users skip to forest
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Screen management + companion definitions** - `4b5502f` (feat)
+2. **Task 2: Welcome screen UI + onboarding flow** - `20a7670` (feat)
+
+## Files Created/Modified
+- `src/app.ts` - Screen management (showScreen, getDB, initApp), routes to welcome or forest
+- `src/companion/characters.ts` - 4 companion definitions with type, name, emoji, personality
+- `src/ui/screens.ts` - Welcome screen logic: card rendering, layout toggle, start button, save + navigate
+- `src/main.ts` - Updated to import and call initApp on DOMContentLoaded
+- `index.html` - Welcome screen HTML structure with companion-grid, layout-toggle, start-btn
+- `src/styles/main.css` - Welcome screen styles: companion cards, layout buttons, start button with states
+
+## Decisions Made
+- Screen transitions use CSS opacity + display toggle (no router library needed for 5 screens)
+- Companion cards rendered dynamically from characters.ts data array rather than hardcoded in HTML
+- Layout defaults to 'de' (German), toggleable to 'ch' (Swiss)
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+None.
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Screen management ready for lesson, reward, and parent screens
+- Forest screen is empty placeholder, ready for 01-03 to populate
+- Companion data available for dialogue generation in later plans
+
+---
+*Phase: 01-grundger-st-tippmechanik*
+*Completed: 2026-03-29*