fix: 服务发现支持无权限查看的端口（Docker host网络等）

- ss -tlnp 输出中没有 pid= 的端口不再跳过
- pid 为 None 时显示「受权限限制」, 进程名标记「未知进程」
- 当前发现: 8088, 9119, 16031, 16067, 18789

routes_discovery.py

@@ -71,13 +71,10 @@ def _get_listening_ports():
             port = int(port_match.group(1))
             
             pid_match = re.search(r'pid=(\d+)', line)
-            if not pid_match:
-                continue
-            pid = int(pid_match.group(1))
+            pid = int(pid_match.group(1)) if pid_match else None
             
-            # 提取进程名
             proc_match = re.search(r'users:\(\(\"([^\"]+)\"', line)
-            proc_name = proc_match.group(1) if proc_match else 'unknown'
+            proc_name = proc_match.group(1) if proc_match else '未知进程'
             
             services.append({
                 'port': port,
@@ -219,10 +216,16 @@ def register_discovery_routes(app):
                 continue
             seen_ports.add(port)
             
-            cmdline = _get_process_cmdline(pid)
-            cwd = _get_process_cwd(pid)
-            name = _guess_service_name(pid, svc['process'], cmdline)
-            svc_type = _guess_service_type(cmdline)
+            if pid:
+                cmdline = _get_process_cmdline(pid)
+                cwd = _get_process_cwd(pid)
+                name = _guess_service_name(pid, svc['process'], cmdline)
+                svc_type = _guess_service_type(cmdline)
+            else:
+                cmdline = ''
+                cwd = ''
+                name = svc['process']
+                svc_type = 'unknown'
             
             undiscovered.append({
                 'port': port,