fix(pwa): prevent stale service worker caching (#498)

public/nginx.conf

@@ -35,6 +35,23 @@ http {
             try_files $uri $uri/ /index.html;
         }
 
+        location = /service-worker.js {
+            # Service Worker 必须保持稳定 URL 并每次重新验证，避免前端更新后继续注册旧版本。
+            expires off;
+            add_header Cache-Control "no-cache, must-revalidate";
+            root html;
+            try_files $uri =404;
+        }
+
+        location = /manifest.webmanifest {
+            # Web App Manifest 参与 PWA 安装与资源发现，不能跟普通静态资源一起长缓存。
+            expires off;
+            default_type application/manifest+json;
+            add_header Cache-Control "no-cache, must-revalidate";
+            root html;
+            try_files $uri =404;
+        }
+
         location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
             # 静态资源
             expires 1y;
@@ -44,8 +61,7 @@ http {
 
         location /assets {
             # 静态资源
-            expires 1y;
-            add_header Cache-Control "public";
+            add_header Cache-Control "public, max-age=31536000, immutable";
             root html;
         }