[feat] Add comprehensive caching to CI/CD workflows

- Add ESLint cache (.eslintcache) to auto-fix and fork PR workflows
- Add npm cache to all Node.js setup steps across workflows
- Add Vite build cache (node_modules/.vite) to improve build performance
- Add Playwright browser cache with version-specific keys
- Optimize test-ui, vitest, release, and auto-fix workflows

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

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

.github/workflows/vitest.yaml

@@ -17,10 +17,19 @@ jobs:
       uses: actions/setup-node@v4
       with:
         node-version: 'lts/*'
+        cache: 'npm'
 
     - name: Install dependencies
       run: npm ci
 
+    - name: Cache Vite
+      uses: actions/cache@v4
+      with:
+        path: node_modules/.vite
+        key: ${{ runner.os }}-vite-${{ hashFiles('package-lock.json') }}
+        restore-keys: |
+          ${{ runner.os }}-vite-
+
     - name: Run Vitest tests
       run: |
         npm run test:component