refactor: unify exec shell parser parity and gateway websocket test helpers

apps/macos/Tests/OpenClawIPCTests/GatewayChannelConnectTests.swift

@@ -38,25 +38,11 @@ import Testing
         }
 
         func send(_ message: URLSessionWebSocketTask.Message) async throws {
-            let data: Data? = switch message {
-            case let .data(d): d
-            case let .string(s): s.data(using: .utf8)
-            @unknown default: nil
-            }
-            guard let data else { return }
-            if let obj = try? JSONSerialization.jsonObject(with: data) as? [String: Any],
-               obj["type"] as? String == "req",
-               obj["method"] as? String == "connect",
-               let id = obj["id"] as? String
-            {
+            if let id = GatewayWebSocketTestSupport.connectRequestID(from: message) {
                 self.connectRequestID.withLock { $0 = id }
             }
         }
 
-        func sendPing(pongReceiveHandler: @escaping @Sendable (Error?) -> Void) {
-            pongReceiveHandler(nil)
-        }
-
         func receive() async throws -> URLSessionWebSocketTask.Message {
             let delayMs: Int
             let msg: URLSessionWebSocketTask.Message
@@ -64,7 +50,7 @@ import Testing
             case let .helloOk(ms):
                 delayMs = ms
                 let id = self.connectRequestID.withLock { $0 } ?? "connect"
-                msg = .data(Self.connectOkData(id: id))
+                msg = .data(GatewayWebSocketTestSupport.connectOkData(id: id))
             case let .invalid(ms):
                 delayMs = ms
                 msg = .string("not json")
@@ -81,29 +67,6 @@ import Testing
             self.pendingReceiveHandler.withLock { $0 = completionHandler }
         }
 
-        private static func connectOkData(id: String) -> Data {
-            let json = """
-            {
-              "type": "res",
-              "id": "\(id)",
-              "ok": true,
-              "payload": {
-                "type": "hello-ok",
-                "protocol": 2,
-                "server": { "version": "test", "connId": "test" },
-                "features": { "methods": [], "events": [] },
-                "snapshot": {
-                  "presence": [ { "ts": 1 } ],
-                  "health": {},
-                  "stateVersion": { "presence": 0, "health": 0 },
-                  "uptimeMs": 0
-                },
-                "policy": { "maxPayload": 1, "maxBufferedBytes": 1, "tickIntervalMs": 30000 }
-              }
-            }
-            """
-            return Data(json.utf8)
-        }
     }
 
     private final class FakeWebSocketSession: WebSocketSessioning, @unchecked Sendable {