fix: block stale paired IPC and duplicate finalize turns

runners/agent-runner/src/ipc-message.ts

@@ -3,6 +3,7 @@ export interface SendMessageIpcPayloadInput {
   text: string;
   sender?: string;
   senderRole?: string;
+  runId?: string;
   groupFolder: string;
   timestamp?: string;
 }
@@ -16,6 +17,7 @@ export function buildSendMessageIpcPayload(
     text: input.text,
     sender: input.sender || undefined,
     senderRole: input.senderRole || undefined,
+    runId: input.runId || undefined,
     groupFolder: input.groupFolder,
     timestamp: input.timestamp || new Date().toISOString(),
   };