feat: 优化 README 及文档结构，新增英文说明

删除 README.zh-CN.md，新增英文版 README.EN.md，简体中文说明合并至 README.md 并补充内容。同步 docs/assets 下页面 JS/CSS 文件，优化文档资源命名与引用，提升多语言文档一致性。

vite.config.ts

@@ -5,7 +5,26 @@ import path from 'node:path'
 
 export default defineConfig({
   base: './',
-  build: { outDir: 'docs' },
+  build: {
+    outDir: 'docs',
+    sourcemap: false,
+    cssCodeSplit: true,
+    rollupOptions: {
+      output: {
+        manualChunks(id) {
+          if (id.includes('node_modules/vue')) return 'vendor-vue'
+          if (id.includes('node_modules/vue-router')) return 'vendor-vue'
+          if (id.includes('node_modules/pinia')) return 'vendor-vue'
+          if (id.includes('node_modules/reka-ui')) return 'vendor-ui'
+          if (id.includes('node_modules/@vueuse/core')) return 'vendor-ui'
+        }
+      }
+    },
+  },
   plugins: [vue(), tailwindcss()],
-  resolve: { alias: { '@': path.resolve(__dirname, './src') } }
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    }
+  }
 })