fix: land mac node bridge ping loop (#572) (thanks @ngutman)

apps/macos/Tests/ClawdbotIPCTests/MacNodeBridgeSessionTests.swift

@@ -0,0 +1,19 @@
+import Testing
+@testable import Clawdbot
+
+@Suite
+struct MacNodeBridgeSessionTests {
+    @Test func sendEventThrowsWhenNotConnected() async {
+        let session = MacNodeBridgeSession()
+
+        do {
+            try await session.sendEvent(event: "test", payloadJSON: "{}")
+            Issue.record("Expected sendEvent to throw when disconnected")
+        } catch {
+            let ns = error as NSError
+            #expect(ns.domain == "Bridge")
+            #expect(ns.code == 15)
+        }
+    }
+}
+