docker-compose: 给 qwen-agent 加 host.docker.internal extra_hosts 映射，修复 Linux 服务器上调用 New API 时 DNS 解析失败

docker-compose-with-pgsql.yml

@@ -51,6 +51,9 @@ services:
       - ./projects:/app/projects
       - ./models:/app/models
       - ./public:/app/public
+    extra_hosts:
+      # Map host.docker.internal to host gateway so it works on Linux too
+      - "host.docker.internal:host-gateway"
     depends_on:
       postgres:
         condition: service_healthy