feat(web): auto-switch port on conflict and open browser on startup

channel/web/web_channel.py

@@ -535,8 +535,24 @@ class WebChannel(ChatChannel):
         with open(file_path, 'r', encoding='utf-8') as f:
             return f.read()
 
+    def _find_available_port(self, start_port, max_tries=10):
+        """从 start_port 开始向上找第一个可用端口，最多尝试 max_tries 次。"""
+        import socket
+        for port in range(start_port, start_port + max_tries):
+            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+                s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+                try:
+                    s.bind(("0.0.0.0", port))
+                    return port
+                except OSError:
+                    continue
+        raise OSError(f"[WebChannel] 无法找到可用端口（尝试范围 {start_port}-{start_port + max_tries - 1}）")
+
     def startup(self):
-        port = conf().get("web_port", 9899)
+        base_port = conf().get("web_port", 9899)
+        port = self._find_available_port(base_port)
+        if port != base_port:
+            logger.info(f"[WebChannel] 端口 {base_port} 已被占用，自动切换到端口 {port}")
 
         # 打印可用渠道类型提示
         logger.info(
@@ -554,6 +570,9 @@ class WebChannel(ChatChannel):
         logger.info(f"[WebChannel] 🌐 本地访问: http://localhost:{port}")
         logger.info(f"[WebChannel] 🌍 服务器访问: http://YOUR_IP:{port} (请将YOUR_IP替换为服务器IP)")
 
+        import webbrowser
+        webbrowser.open(f"http://localhost:{port}")
+
         # 确保静态文件目录存在
         static_dir = os.path.join(os.path.dirname(__file__), 'static')
         if not os.path.exists(static_dir):