---
phase: 01-grundger-st-tippmechanik
plan: 02
type: execute
wave: 2
depends_on: ["01-01"]
files_modified:
  - src/app.ts
  - src/ui/screens.ts
  - src/companion/characters.ts
  - index.html
autonomous: true
requirements:
  - FNDN-05
  - ONBD-01
  - ONBD-02
  - ONBD-03
  - ONBD-04

must_haves:
  truths:
    - "App startet und zeigt den Willkommens-Screen"
    - "4 Begleitfigur-Karten sind klickbar und zeigen Emoji + Name"
    - "DE/CH Layout-Toggle ist waehlbar"
    - "Nach Auswahl + Los gehts wechselt die App zur Wald-Uebersicht"
    - "Nach Browser-Reload bleibt die Auswahl erhalten und Willkommens-Screen wird uebersprungen"
  artifacts:
    - path: "src/app.ts"
      provides: "Screen management and routing"
      exports: ["showScreen", "initApp"]
    - path: "src/ui/screens.ts"
      provides: "Welcome screen logic and companion selection"
      exports: ["initWelcomeScreen"]
    - path: "src/companion/characters.ts"
      provides: "Companion definitions (name, emoji, personality)"
      exports: ["companions", "CompanionDefinition"]
  key_links:
    - from: "src/app.ts"
      to: "src/storage/db.ts"
      via: "checks progress on init to skip welcome"
      pattern: "getProgress"
    - from: "src/ui/screens.ts"
      to: "src/storage/db.ts"
      via: "saves companion + layout choice"
      pattern: "saveProgress"
    - from: "src/main.ts"
      to: "src/app.ts"
      via: "calls initApp() on DOMContentLoaded"
      pattern: "initApp"
---

<objective>
Implement screen management (CSS fade transitions between 5 screens) and the complete onboarding flow: companion selection, layout selection, persistence, and navigation to forest.

Purpose: The user must be able to start the app, choose a companion and layout, and reach the forest overview. This is the entry point for all subsequent gameplay.
Output: Working welcome-to-forest flow with IndexedDB persistence.
</objective>

<execution_context>
@$HOME/.claude/get-shit-done/workflows/execute-plan.md
@$HOME/.claude/get-shit-done/templates/summary.md
</execution_context>

<context>
@.planning/PROJECT.md
@.planning/ROADMAP.md
@.planning/phases/01-grundger-st-tippmechanik/01-CONTEXT.md
@.planning/phases/01-grundger-st-tippmechanik/01-01-SUMMARY.md
@SPEC.md (sections 5.2, 7.1, 7.2)

<interfaces>
From src/types.ts:
```typescript
export type CompanionType = 'fee' | 'einhorn' | 'fuchs' | 'eule';
export type KeyboardLayout = 'de' | 'ch';
export type ScreenName = 'welcome' | 'forest' | 'lesson' | 'reward' | 'parent';
export interface Progress {
  id: 1;
  currentLevel: number;
  completedLevels: number[];
  totalSessions: number;
  sessionDates: string[];
  selectedCharacter: CompanionType;
  selectedLayout: KeyboardLayout;
}
```

From src/storage/db.ts:
```typescript
export function openDB(): Promise<IDBDatabase>;
export async function getProgress(db: IDBDatabase): Promise<Progress | null>;
export async function saveProgress(db: IDBDatabase, progress: Progress): Promise<void>;
```
</interfaces>
</context>

<tasks>

<task type="auto">
  <name>Task 1: Screen management + companion definitions</name>
  <files>
    src/app.ts, src/companion/characters.ts
  </files>
  <read_first>
    src/types.ts
    src/storage/db.ts
    src/styles/main.css
    index.html
    SPEC.md (section 5.2 for companion definitions, section 7.1 for screen list)
  </read_first>
  <action>
    1. Create src/companion/characters.ts with companion definitions (per D-05, emoji placeholders):
    ```typescript
    import type { CompanionType } from '../types';

    export interface CompanionDefinition {
      type: CompanionType;
      name: string;
      emoji: string;
      personality: string;
    }

    export const companions: CompanionDefinition[] = [
      { type: 'fee', name: 'Lila', emoji: '🧚', personality: 'Sanft, ermutigend, ein bisschen vertraeumt' },
      { type: 'einhorn', name: 'Stella', emoji: '🦄', personality: 'Froehlich, enthusiastisch, feiert jeden kleinen Erfolg' },
      { type: 'fuchs', name: 'Finn', emoji: '🦊', personality: 'Ruhig, weise, humorvoll' },
      { type: 'eule', name: 'Elsa', emoji: '🦉', personality: 'Geduldig, warm, grossmuetterlich' },
    ];
    ```

    2. Create src/app.ts with screen management (per D-01):
    ```typescript
    import type { ScreenName } from './types';
    import { openDB, getProgress } from './storage/db';
    import { initWelcomeScreen } from './ui/screens';

    let db: IDBDatabase;

    export function showScreen(name: ScreenName): void {
      document.querySelectorAll('.screen').forEach(el => {
        el.classList.remove('screen--active');
      });
      const target = document.getElementById(`screen-${name}`);
      if (target) {
        target.classList.add('screen--active');
      }
    }

    export function getDB(): IDBDatabase {
      return db;
    }

    export async function initApp(): Promise<void> {
      db = await openDB();
      const progress = await getProgress(db);
      if (progress && progress.selectedCharacter) {
        // Returning user — skip welcome, go to forest
        showScreen('forest');
      } else {
        // First time — show welcome
        initWelcomeScreen(db, showScreen);
        showScreen('welcome');
      }
    }
    ```

    3. Update src/main.ts to call initApp:
    ```typescript
    import './styles/main.css';
    import { initApp } from './app';
    document.addEventListener('DOMContentLoaded', initApp);
    ```
  </action>
  <verify>
    <automated>cd /home/dev/workspace/zauberwald && npx tsc --noEmit</automated>
  </verify>
  <acceptance_criteria>
    - src/companion/characters.ts exports `companions` array with 4 entries (fee, einhorn, fuchs, eule)
    - src/companion/characters.ts contains emoji strings: '🧚', '🦄', '🦊', '🦉'
    - src/app.ts exports `showScreen` and `initApp`
    - src/app.ts imports from `./storage/db` and `./ui/screens`
    - src/app.ts contains logic: if progress exists -> showScreen('forest'), else showScreen('welcome')
    - src/main.ts contains `import { initApp } from './app'` and `initApp`
    - `npx tsc --noEmit` exits 0
  </acceptance_criteria>
  <done>Screen transitions work via CSS class toggling, companion data defined, app routes to welcome or forest based on saved progress</done>
</task>

<task type="auto">
  <name>Task 2: Welcome screen UI + onboarding flow</name>
  <files>
    src/ui/screens.ts, index.html, src/styles/main.css
  </files>
  <read_first>
    src/app.ts
    src/companion/characters.ts
    src/types.ts
    src/storage/db.ts
    src/styles/main.css
    index.html
  </read_first>
  <action>
    1. Update index.html — populate the welcome screen section with:
    ```html
    <section id="screen-welcome" class="screen screen--active">
      <div class="welcome">
        <h1>Willkommen im Zauberwald!</h1>
        <p class="welcome__subtitle">Waehle deine Begleitfigur:</p>
        <div class="welcome__companions" id="companion-grid">
          <!-- Filled dynamically by screens.ts -->
        </div>
        <p class="welcome__layout-label">Tastatur-Layout:</p>
        <div class="welcome__layout-toggle" id="layout-toggle">
          <button class="layout-btn layout-btn--active" data-layout="de">DE</button>
          <button class="layout-btn" data-layout="ch">CH</button>
        </div>
        <button class="welcome__start-btn" id="start-btn" disabled>Los geht's!</button>
      </div>
    </section>
    ```
    Keep the other 4 screen sections empty (just the section tag).

    2. Create src/ui/screens.ts:
    ```typescript
    import type { CompanionType, KeyboardLayout, ScreenName, Progress } from '../types';
    import { companions } from '../companion/characters';
    import { saveProgress } from '../storage/db';

    export function initWelcomeScreen(
      db: IDBDatabase,
      navigateTo: (screen: ScreenName) => void
    ): void {
      let selectedCompanion: CompanionType | null = null;
      let selectedLayout: KeyboardLayout = 'de';

      const grid = document.getElementById('companion-grid')!;
      const startBtn = document.getElementById('start-btn') as HTMLButtonElement;
      const layoutToggle = document.getElementById('layout-toggle')!;

      // Render companion cards
      companions.forEach(c => {
        const card = document.createElement('button');
        card.className = 'companion-card';
        card.dataset.companion = c.type;
        card.innerHTML = `
          <span class="companion-card__emoji">${c.emoji}</span>
          <span class="companion-card__name">${c.name}</span>
        `;
        card.addEventListener('click', () => {
          grid.querySelectorAll('.companion-card').forEach(el =>
            el.classList.remove('companion-card--selected')
          );
          card.classList.add('companion-card--selected');
          selectedCompanion = c.type;
          startBtn.disabled = false;
        });
        grid.appendChild(card);
      });

      // Layout toggle
      layoutToggle.addEventListener('click', (e) => {
        const btn = (e.target as HTMLElement).closest('.layout-btn') as HTMLButtonElement | null;
        if (!btn) return;
        layoutToggle.querySelectorAll('.layout-btn').forEach(el =>
          el.classList.remove('layout-btn--active')
        );
        btn.classList.add('layout-btn--active');
        selectedLayout = btn.dataset.layout as KeyboardLayout;
      });

      // Start button
      startBtn.addEventListener('click', async () => {
        if (!selectedCompanion) return;
        const progress: Progress = {
          id: 1,
          currentLevel: 1,
          completedLevels: [],
          totalSessions: 0,
          sessionDates: [],
          selectedCharacter: selectedCompanion,
          selectedLayout: selectedLayout,
        };
        await saveProgress(db, progress);
        navigateTo('forest');
      });
    }
    ```

    3. Add CSS for welcome screen in src/styles/main.css:
    - `.welcome` — centered flex column, padding 2rem, max-width 600px, margin auto
    - `.welcome h1` — font-family Quicksand, font-size 2rem, color var(--text-dark)
    - `.welcome__companions` / `#companion-grid` — display grid, grid-template-columns repeat(2, 1fr), gap 1rem
    - `.companion-card` — background white, border 3px solid transparent, border-radius 16px, padding 1.5rem, cursor pointer, transition border-color 0.2s, text-align center, display flex, flex-direction column, align-items center, gap 0.5rem
    - `.companion-card:hover` — border-color var(--accent-gold)
    - `.companion-card--selected` — border-color var(--accent-green), background var(--bg-forest)
    - `.companion-card__emoji` — font-size 3rem
    - `.companion-card__name` — font-family Quicksand, font-weight 600, font-size 1.2rem, color var(--text-dark)
    - `.layout-btn` — padding 0.5rem 1.5rem, border-radius 8px, border 2px solid var(--text-light), background white, cursor pointer, font-family Nunito, font-size 1rem
    - `.layout-btn--active` — background var(--accent-green), color white, border-color var(--accent-green)
    - `.welcome__start-btn` — margin-top 1.5rem, padding 1rem 3rem, border-radius 12px, background var(--accent-green), color white, border none, font-family Quicksand, font-weight 700, font-size 1.3rem, cursor pointer, opacity 1, transition opacity 0.2s
    - `.welcome__start-btn:disabled` — opacity 0.4, cursor not-allowed
    - `.welcome__layout-toggle` — display flex, gap 0.5rem, margin-top 0.5rem
  </action>
  <verify>
    <automated>cd /home/dev/workspace/zauberwald && npx tsc --noEmit && npm run dev -- --strictPort 2>&1 &amp; sleep 3 && curl -s http://localhost:5173 | grep -q "companion-grid" && kill %1 && echo "PASS"</automated>
  </verify>
  <acceptance_criteria>
    - index.html contains `id="companion-grid"` and `id="start-btn"` and `id="layout-toggle"`
    - index.html contains `data-layout="de"` and `data-layout="ch"`
    - src/ui/screens.ts exports `initWelcomeScreen`
    - src/ui/screens.ts contains `saveProgress(db, progress)` call
    - src/ui/screens.ts contains `navigateTo('forest')` after save
    - src/ui/screens.ts creates 4 companion cards with `.companion-card` class
    - src/styles/main.css contains `.companion-card`, `.companion-card--selected`, `.welcome__start-btn`
    - src/styles/main.css contains `.layout-btn--active`
    - `npx tsc --noEmit` exits 0
    - Welcome screen renders 4 companion cards and DE/CH toggle in browser
  </acceptance_criteria>
  <done>Welcome screen shows 4 emoji companion cards, DE/CH layout toggle, and "Los geht's" button. Selecting companion enables start. Clicking start saves to IndexedDB and navigates to forest screen. On reload, app skips welcome and shows forest directly.</done>
</task>

</tasks>

<verification>
- App loads and shows welcome screen with 4 companion cards
- Clicking a companion highlights it and enables "Los geht's"
- DE/CH toggle switches active state
- Clicking "Los geht's" transitions to forest screen (empty for now)
- Refreshing the page skips welcome and shows forest directly
- Clearing IndexedDB and refreshing shows welcome again
</verification>

<success_criteria>
- Complete onboarding flow: select companion + layout, start, persist, skip on return
- Screen transitions use CSS fade (opacity transition)
- All companion data matches spec section 5.2 names
</success_criteria>

<output>
After completion, create `.planning/phases/01-grundger-st-tippmechanik/01-02-SUMMARY.md`
</output>
