feat: add initial frontend setup with styles, types, and testing framework

- Created a global CSS file for styling the frontend with responsive design.
- Introduced TypeScript types for various entities including Research, Alpha, and Account.
- Implemented Playwright tests for account management and data synchronization workflows.
- Configured TypeScript with strict settings and included necessary libraries.
- Set up Vite as the build tool with React plugin and API proxy configuration.
- Added a Python script to initialize environment variables securely.

frontend/package.json

@@ -0,0 +1,30 @@
+{
+  "name": "wq-alpha-frontend",
+  "version": "0.1.0",
+  "private": true,
+  "packageManager": "pnpm@9.15.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite --host 127.0.0.1",
+    "build": "tsc -b && vite build",
+    "typecheck": "tsc -b --pretty false",
+    "test": "playwright test",
+    "test:e2e": "playwright test"
+  },
+  "dependencies": {
+    "@douyinfe/semi-icons": "2.103.0",
+    "@douyinfe/semi-ui-19": "2.103.0",
+    "react": "19.2.8",
+    "react-dom": "19.2.8"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.55.0",
+    "@types/node": "^22",
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
+    "@vitejs/plugin-react": "^5.0.0",
+    "prettier": "3.6.2",
+    "typescript": "^5.9.0",
+    "vite": "8.2.2"
+  }
+}