refactor: 企业级目录重构与播放/关于页体验升级

- 按 app / shared / entities / features 分层，路由懒加载并抽出布局组件
- 请求层改为可插拔拦截器，统一错误类型、超时取消与端点拆分
- 抽取播放器、骨架屏、网格等复用组件，点赞收藏接入统一交互反馈
- 关于页重做为无边框极光风格，补充 iOS / Google Play 下载入口
- 修复播放页滚轮切集吞事件、页面误滚动、后台持续播放与声音记忆问题
- 语言按本地偏好与 IP 识别，国旗改为内联 SVG
- 清理未使用的旧站点文件，补充 ESLint 配置

src/layouts/components/CreateMenu.jsx

@@ -0,0 +1,39 @@
+// Author: fruit.com.cn
+import { Plus, Upload } from 'lucide-react';
+import { useEffect, useRef, useState } from 'react';
+import { useLocale } from '../../app/providers/AppProviders';
+
+export function CreateMenu({ onUpload }) {
+  const { locale } = useLocale();
+  const [open, setOpen] = useState(false);
+  const menuRef = useRef(null);
+
+  useEffect(() => {
+    if (!open) return undefined;
+    const closeMenu = (event) => {
+      if (!menuRef.current?.contains(event.target)) setOpen(false);
+    };
+    document.addEventListener('mousedown', closeMenu);
+    return () => document.removeEventListener('mousedown', closeMenu);
+  }, [open]);
+
+  const selectUpload = () => {
+    setOpen(false);
+    onUpload?.();
+  };
+
+  return (
+    <div className="create-wrap" ref={menuRef}>
+      <button className="create-button" type="button" aria-haspopup="menu" aria-expanded={open} onClick={() => setOpen((value) => !value)}>
+        <Plus size={20} /><span>{locale.create}</span>
+      </button>
+      {open && (
+        <div className="create-menu" role="menu">
+          <button type="button" role="menuitem" onClick={selectUpload}>
+            <Upload size={18} /><span>{locale.uploadVideo}</span>
+          </button>
+        </div>
+      )}
+    </div>
+  );
+}