Add initial project structure with essential files

- Created .gitignore to exclude build artifacts and dependencies.
- Added index.html as the main entry point for the application.
- Included LICENSE file with Apache 2.0 terms.
- Initialized package.json and package-lock.json for project dependencies.
- Added pnpm-lock.yaml for package management.
- Created QUICKSTART.md for setup instructions.
- Added README.md and README.zh-CN.md for project documentation in English and Chinese.

public/logo.svg

@@ -0,0 +1,15 @@
+<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64' fill='none' role='img' aria-label='Open Claude Design'>
+  <title>Open Claude Design</title>
+  <g stroke='#1F1B16' stroke-width='3.4' stroke-linecap='square' fill='none'>
+    <path d='M10 24 L10 10 L24 10' />
+    <path d='M40 10 L54 10 L54 24' />
+    <path d='M54 40 L54 54 L40 54' />
+    <path d='M24 54 L10 54 L10 40' />
+  </g>
+  <g stroke='#C2532D' stroke-width='3' stroke-linecap='round'>
+    <line x1='32' y1='20' x2='32' y2='44' />
+    <line x1='20' y1='32' x2='44' y2='32' />
+    <line x1='23.51' y1='23.51' x2='40.49' y2='40.49' />
+    <line x1='40.49' y1='23.51' x2='23.51' y2='40.49' />
+  </g>
+</svg>