refactor(nginx): 简化admin路由配置并移除未使用的tool路由

移除/admin/api/和/admin/tool/的单独配置，统一使用/admin路由
删除未使用的/tool/路由配置

ui/nginx.conf

@@ -16,23 +16,14 @@ server {
         proxy_set_header X-Forwarded-Proto $scheme;
     }
 
-    location /admin/api/ {
-        proxy_pass http://maxkb-web:8080/api/;
+    location /admin {
+        proxy_pass http://maxkb-web:8080;
         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;
     }
 
-    location /admin/tool/ {
-        rewrite ^/admin(/.*)$ $1 break;
-        try_files $uri $uri/ /index.html;
-    }
-
-    location /tool/ {
-        try_files $uri $uri/ /index.html;
-    }
-
     location /chat {
         alias /usr/share/nginx/html/chat;
         try_files $uri $uri/ /chat/index.html;