fix: 修复 Nginx 静态文件配置，优先使用本地文件

TOOLS.md

@@ -71,7 +71,7 @@ Add whatever helps you do your job. This is your cheat sheet.
 ### 城市手册部署
 
 - **主机**: cssc.datalibstar.com (1.15.30.241)
-- **用户**: ubuntu ⚠️ **不是 mashen！**
+- **用户**: Ubuntu ⚠️ **注意大写 U**
 - **密码**: 825670@MashenClaw
 - **状态**: ✅ SSH 认证成功
 

frontend/nginx.conf

@@ -28,6 +28,11 @@ server {
     }
 
     location /static {
+        # Try local static files first, then proxy to backend
+        try_files $uri $uri/ @backend_static;
+    }
+
+    location @backend_static {
         proxy_pass http://backend:8000;
     }