feat: initialize Ballet Island 微信小程序 with basic structure and functionality

- Add project configuration for WeChat mini program.
- Create skills lock file for Taroify integration.
- Set up app configuration and styles.
- Implement main app component and index page with welcome message.
- Add health check service to verify backend readiness.
- Configure TypeScript settings and global types.

miniprogram/package.json

@@ -0,0 +1,45 @@
+{
+  "name": "@ballet-island/miniprogram",
+  "version": "0.1.0",
+  "private": true,
+  "packageManager": "pnpm@9.15.0",
+  "engines": {
+    "node": ">=22.12.0 <23",
+    "pnpm": ">=9 <10"
+  },
+  "scripts": {
+    "dev": "taro build --type weapp --watch",
+    "build": "taro build --type weapp",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@babel/runtime": "^7.28.4",
+    "@taroify/core": "1.0.6",
+    "@tarojs/components": "4.2.1",
+    "@tarojs/helper": "4.2.1",
+    "@tarojs/react": "4.2.1",
+    "@tarojs/runtime": "4.2.1",
+    "@tarojs/shared": "4.2.1",
+    "@tarojs/taro": "4.2.1",
+    "react": "18.3.1",
+    "react-dom": "18.3.1"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.28.4",
+    "@babel/preset-react": "^7.27.1",
+    "@taroify/cli": "1.0.6",
+    "@tarojs/cli": "4.2.1",
+    "@tarojs/plugin-framework-react": "4.2.1",
+    "@tarojs/plugin-platform-weapp": "4.2.1",
+    "@tarojs/taro-loader": "4.2.1",
+    "@tarojs/webpack5-runner": "4.2.1",
+    "@types/node": "^22.0.0",
+    "@types/react": "^18.3.0",
+    "babel-preset-taro": "4.2.1",
+    "less": "^4.2.0",
+    "postcss": "^8.5.6",
+    "sass": "1.105.0",
+    "typescript": "5.9.3",
+    "webpack": "5.91.0"
+  }
+}