Initial commit - PenguinJS 프로젝트 초기 설정

- Next.js 15.3.2 기반 프로젝트 구조
- CallStack Library 게임 구현
- Layout A, A+, B, C, D, E 타입 구현
- Stage 7 스타일 적용된 Layout B
- 불필요한 파일 제외 (.gitignore 적용)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Seungwoo321

.github/workflows/accessibility.yml

@@ -0,0 +1,62 @@
+name: Accessibility Check
+
+on:
+  push:
+    branches: [main, develop]
+  pull_request:
+    branches: [main]
+
+jobs:
+  color-contrast:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v3
+    
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '20'
+        
+    - name: Install dependencies
+      run: |
+        cd apps/playground
+        npm ci
+    
+    - name: Build application
+      run: |
+        cd apps/playground
+        npm run build
+    
+    - name: Install accessibility tools
+      run: |
+        npm install -g @axe-core/cli
+        npm install -g pa11y
+    
+    - name: Start server
+      run: |
+        cd apps/playground
+        npm run start &
+        sleep 10
+    
+    - name: Run axe accessibility tests
+      run: |
+        axe http://localhost:3000 --tags wcag2aa,wcag21aa --exit
+    
+    - name: Run pa11y color contrast tests
+      run: |
+        pa11y http://localhost:3000 --standard WCAG2AA --reporter cli
+    
+    - name: Check specific color combinations
+      run: |
+        node scripts/check-color-contrast.js
+      working-directory: apps/playground
+    
+    - name: Upload accessibility report
+      if: always()
+      uses: actions/upload-artifact@v3
+      with:
+        name: accessibility-report
+        path: |
+          apps/playground/accessibility-report.json
+          apps/playground/color-contrast-report.json

.gitignore

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+node_modules/
+.next/
+.turbo/
+*.log
+.DS_Store