D140 · 修复 /ide/ 路由 · Nginx配置缺失location块

- 问题：主页/ide/卡片点击后跳回首页（Nginx无/ide/ location）
- 根因：code-server运行在3920端口，但Nginx配置缺少/ide/反代
- 修复：在nginx-guanghubingshuo.conf添加/ide/ location块
- 反代目标：127.0.0.1:3920（code-server实际监听端口）
- 同时清理sites-enabled/下多余的.bak文件（移入/root/nginx-backup/）

TCS-VERIFY: TCS-VRF-SOV-D139-8A7F2C

brain/operations/BS-SG-001/nginx-guanghubingshuo.conf

@@ -172,4 +172,18 @@ server {
         proxy_cache off;
         proxy_read_timeout 300s;
     }
+    # === D140 新增：代码开发 IDE（code-server on :3920）===
+    location /ide/ {
+        proxy_pass http://127.0.0.1:3920/;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_buffering off;
+        proxy_cache off;
+        proxy_read_timeout 300s;
+    }
 }