diff --git a/apps/macos/Sources/ClawdisProtocol/Protocol.swift b/apps/macos/Sources/ClawdisProtocol/Protocol.swift
new file mode 100644
index 000000000..60841ecd4
--- /dev/null
+++ b/apps/macos/Sources/ClawdisProtocol/Protocol.swift
@@ -0,0 +1,6 @@
+// Legacy shim: Protocol definitions now live in GatewayModels.swift generated from TypeBox.
+// Kept to satisfy existing project references.
+import Foundation
+
+@available(*, deprecated, message: "Use GatewayModels.swift (GatewayFrame and payload structs)")
+public enum LegacyProtocolShim {}