macOS: ensure /tmp/clawdbot exists for launchd logs

apps/macos/Tests/ClawdbotIPCTests/LogLocatorTests.swift

@@ -0,0 +1,21 @@
+import Foundation
+import Testing
+@testable import Clawdbot
+
+@Suite struct LogLocatorTests {
+    @Test func launchdGatewayLogPathEnsuresTmpDirExists() throws {
+        let dirPath = "/tmp/clawdbot"
+        let fm = FileManager.default
+
+        // Simulate a clean machine state where /tmp/clawdbot does not exist.
+        if fm.fileExists(atPath: dirPath) {
+            try? fm.removeItem(atPath: dirPath)
+        }
+
+        _ = LogLocator.launchdGatewayLogPath
+
+        var isDir: ObjCBool = false
+        #expect(fm.fileExists(atPath: dirPath, isDirectory: &isDir))
+        #expect(isDir.boolValue == true)
+    }
+}