perf(nginx): 静态图/推广资源 Cache-Control 7d，index.html 禁止长期缓存

Made-with: Cursor

nginx/web.conf

@@ -15,24 +15,35 @@ server {
         add_header Cache-Control "public, immutable";
     }
 
+    location = /index.html {
+        add_header Cache-Control "no-cache, no-store, must-revalidate";
+        expires -1;
+    }
+
     # web/public 挂载 /var/www/yh-public；单段文件名同 dist 根 URL，优先挂载后回退 dist
     location ~ ^/([^/]+\.(?:png|jpe?g|gif|ico|svg|webp|webmanifest))$ {
         root /var/www/yh-public;
         try_files /$1 @dist_root_public;
+        expires 7d;
+        add_header Cache-Control "public, max-age=604800";
     }
     location @dist_root_public {
         root /usr/share/nginx/html;
         try_files $uri =404;
+        expires 7d;
+        add_header Cache-Control "public, max-age=604800";
     }
 
     location ^~ /social/ {
         alias /var/www/yh-public/social/;
-        add_header Cache-Control "public, max-age=300";
+        expires 7d;
+        add_header Cache-Control "public, max-age=604800";
     }
 
     location ^~ /promotion/ {
         try_files $uri =404;
-        add_header Cache-Control "public, max-age=86400";
+        expires 7d;
+        add_header Cache-Control "public, max-age=604800";
     }
 
     location = / {