Add word-book practice, iOS app shell, and fix embedded WebView blank screen.

Ship dual-track learning (daily accumulation vs textbook),沪教/商务词书 APIs and UI, native iOS wrapper with bundled H5, and production book import on deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/vite.config.ts

@@ -1,8 +1,68 @@
-import { defineConfig } from 'vite'
+import { defineConfig, type Plugin } from 'vite'
 import vue from '@vitejs/plugin-vue'
 
-export default defineConfig({
-  plugins: [vue()],
+/** WKWebView 用 file:// 加载时，crossorigin 会导致脚本无法执行、页面空白 */
+function stripCrossOriginForIOS(): Plugin {
+  return {
+    name: 'strip-crossorigin-ios',
+    apply: 'build',
+    enforce: 'post',
+    transformIndexHtml(html) {
+      return html.replace(/\s+crossorigin(="[^"]*")?/g, '')
+    },
+  }
+}
+
+/** iOS 内嵌启动配置：在模块脚本之前注入，避免 file:// 下懒加载 chunk 失败 */
+function injectIOSRuntimeBootstrap(): Plugin {
+  return {
+    name: 'inject-ios-runtime-bootstrap',
+    apply: 'build',
+    transformIndexHtml(html) {
+      const bootstrap = `<script>
+window.__WORDLOOP_RUNTIME__ = {
+  embedded: true,
+  iosApp: true,
+  apiBase: 'https://w.tkmind.cn/api'
+};
+(function () {
+  if (!location.hash || location.hash === '#') {
+    var base = location.href.split('#')[0];
+    location.replace(base + '#/');
+  }
+})();
+</script>`
+      if (html.includes('__WORDLOOP_RUNTIME__')) return html
+      const withoutModule = html
+        .replace(/\s+crossorigin(="[^"]*")?/g, '')
+        .replace('<script type="module"', '<script')
+        .replace(/\.\/assets\//g, 'wordloop://app/assets/')
+      return withoutModule.replace('<script src=', `${bootstrap}\n    <script src=`)
+    },
+  }
+}
+
+export default defineConfig(({ mode }) => ({
+  base: mode === 'ios' ? './' : '/',
+  plugins: [
+    vue(),
+    ...(mode === 'ios' ? [stripCrossOriginForIOS(), injectIOSRuntimeBootstrap()] : []),
+  ],
+  build: mode === 'ios'
+    ? {
+        modulePreload: false,
+        cssCodeSplit: false,
+        rollupOptions: {
+          output: {
+            // WKWebView file:// 下 type=module 常无法执行，改为 IIFE 普通脚本
+            format: 'iife',
+            inlineDynamicImports: true,
+            entryFileNames: 'assets/app.js',
+            assetFileNames: 'assets/app.[ext]',
+          },
+        },
+      }
+    : undefined,
   server: {
     port: 18003,
     proxy: {
@@ -12,4 +72,4 @@ export default defineConfig({
       },
     },
   },
-})
+}))