GatewayConnection: validate agent message

apps/macos/Tests/ClawdisIPCTests/AgentRPCTests.swift

@@ -2,16 +2,21 @@ import Testing
 @testable import Clawdis
 @testable import ClawdisIPC
 
-@Suite(.serialized) struct AgentRPCTests {
+@Suite(.serialized) struct GatewayConnectionControlTests {
     @Test func statusFailsWhenProcessMissing() async {
-        let result = await AgentRPC.shared.status()
+        let result = await GatewayConnection.shared.status()
         // We don't assert ok because the worker may not be available in CI.
         // Instead, ensure the call returns without throwing and provides a message.
         #expect(result.ok == true || result.error != nil)
     }
 
     @Test func rejectEmptyMessage() async {
-        let result = await AgentRPC.shared.send(text: "", thinking: nil, sessionKey: "main", deliver: false, to: nil)
+        let result = await GatewayConnection.shared.sendAgent(
+            message: "",
+            thinking: nil,
+            sessionKey: "main",
+            deliver: false,
+            to: nil)
         #expect(result.ok == false)
     }
 }