fix: 修复部署后切换页面 JS chunk 404 白屏问题

- main.ts 监听 vite:preloadError，chunk 加载失败时自动刷新一次
- 新增 ChunkErrorBoundary 组件，捕获 Vue 渲染层 chunk 加载异常
- App.vue 包裹 ChunkErrorBoundary
- docker/nginx.conf 修复缓存策略：index.html 不缓存，/assets/ 长缓存 immutable

docker/nginx.conf

@@ -11,23 +11,26 @@ server {
     gzip_types text/plain text/css text/xml text/javascript application/javascript application/json application/xml;
     gzip_comp_level 6;
 
+    location = /index.html {
+        add_header Cache-Control "no-cache, no-store, must-revalidate";
+        add_header Pragma "no-cache";
+        add_header Expires "0";
+    }
+
     location /health {
         access_log off;
         return 200 'OK';
         add_header Content-Type text/plain;
     }
 
-    location / {
-        try_files $uri $uri/ /index.html;
-        add_header Cache-Control "no-cache, no-store, must-revalidate";
-        add_header Pragma "no-cache";
-        add_header Expires "0";
+    location /assets/ {
+        add_header Cache-Control "public, max-age=31536000, immutable";
+        try_files $uri =404;
+        access_log off;
     }
 
-    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
-        expires 1y;
-        add_header Cache-Control "public, immutable";
-        access_log off;
+    location / {
+        try_files $uri $uri/ /index.html;
     }
 
     error_page 404 /index.html;