fix(web): 媒体库图片不显示 — 添加 /uploads Vite 代理 + 修复路径前缀

前端图片 URL 使用 ./uploads/... 相对路径导致 404：
1. Vite 添加 /uploads 代理到后端 3000 端口
2. MediaLibrary 和 MediaPicker 图片 src 去掉 ./ 前缀

apps/web/src/components/MediaPicker/index.tsx

@@ -59,7 +59,8 @@ export default function MediaPicker({ open, onClose, onSelect, accept = 'image/*
 
   const handleSelect = (item: MediaItem) => {
     const token = localStorage.getItem('access_token');
-    const url = token ? `${item.storage_path}?token=${token}` : item.storage_path;
+    const rawPath = (item.storage_path || '').replace(/^\.\//, '/');
+    const url = token ? `${rawPath}?token=${token}` : rawPath;
     onSelect(url, item);
     onClose();
   };
@@ -138,7 +139,7 @@ export default function MediaPicker({ open, onClose, onSelect, accept = 'image/*
                     <Image
                       src={(() => {
                         const token = localStorage.getItem('access_token');
-                        const base = item.thumbnail_path || item.storage_path;
+                        const base = (item.thumbnail_path || item.storage_path || '').replace(/^\.\//, '/');
                         return token ? `${base}?token=${token}` : base;
                       })()}
                       alt={item.alt_text || item.filename}

apps/web/src/pages/health/MediaLibrary.tsx

@@ -158,7 +158,7 @@ export default function MediaLibrary() {
         cover={
           <div onClick={() => toggleSelect(item.id)} style={{ height: 140, display: 'flex', alignItems: 'center', justifyContent: 'center', background: 'var(--ant-color-fill-quaternary, #f5f5f5)', overflow: 'hidden', position: 'relative', cursor: 'pointer' }}>
             {isImage(item.content_type) ? (
-              <img src={item.thumbnail_path || item.storage_path} alt={item.alt_text || item.filename} style={{ width: '100%', height: '100%', objectFit: 'cover' }} />
+              <img src={(item.thumbnail_path || item.storage_path).replace(/^\.\//, '/')} alt={item.alt_text || item.filename} style={{ width: '100%', height: '100%', objectFit: 'cover' }} />
             ) : (
               <InboxOutlined style={{ fontSize: 36, color: 'var(--ant-color-text-quaternary)' }} />
             )}

apps/web/vite.config.ts

@@ -11,6 +11,10 @@ export default defineConfig({
         target: "http://localhost:3000",
         changeOrigin: true,
       },
+      "/uploads": {
+        target: "http://localhost:3000",
+        changeOrigin: true,
+      },
       "/ws": {
         target: "ws://localhost:3000",
         ws: true,