fix: Gateway status detection false-negative when command line unreadable (permissions)

- dev-api.js: treat unreadable PIDs as potential Gateway instead of foreign
- dev-api.js: add TCP probe fallback in get_services_status for all platforms
- service.rs: same fix in Tauri side inspect_port_owners

src-tauri/src/commands/service.rs

@@ -724,7 +724,13 @@ mod platform {
                 Some(command_line) if super::looks_like_gateway_command_line(&command_line) => {
                     gateway_pids.push(pid);
                 }
-                _ => foreign_pids.push(pid),
+                Some(command_line) if !command_line.is_empty() => {
+                    foreign_pids.push(pid);
+                }
+                _ => {
+                    // 命令行读不到时，假定为 Gateway（避免权限问题导致误报）
+                    gateway_pids.push(pid);
+                }
             }
         }