fix(kong,nginx): fix API routing configuration

- nginx: preserve full path when proxying to Kong (remove trailing /)
- nginx: increase API timeout to 120s for AI streaming
- kong: use format_version 2.1 for Kong 3.4 compatibility

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

kong/kong.yml

@@ -13,7 +13,7 @@
 #
 #===============================================================================
 
-_format_version: "3.0"
+_format_version: "2.1"
 _transform: true
 
 #===============================================================================

nginx/conf.d/default.conf

@@ -53,17 +53,18 @@ server {
     location /api/ {
         # 使用变量实现动态解析，避免启动时服务不可用导致失败
         set $kong_upstream kong:8000;
-        proxy_pass http://$kong_upstream/;
+        # 保留完整路径传递给 Kong (包括 /api/ 前缀)
+        proxy_pass http://$kong_upstream;
         proxy_http_version 1.1;
         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;
 
-        # 超时设置
-        proxy_connect_timeout 60s;
-        proxy_send_timeout 60s;
-        proxy_read_timeout 60s;
+        # 超时设置 (增加以支持 AI 流式响应)
+        proxy_connect_timeout 120s;
+        proxy_send_timeout 120s;
+        proxy_read_timeout 120s;
 
         # 缓冲设置
         proxy_buffering on;