fix: persist codexapp streaming state

scripts/mock-codex-app-server.js

@@ -468,7 +468,41 @@ function startTurn(params) {
     return { turn: { id: turnId, status: 'running', items: [] } };
   }
 
-  const delay = /slow/i.test(text) ? 900 : 80;
+  const delay = /recover/i.test(text) ? 5000 : /slow/i.test(text) ? 900 : 80;
+  if (/recover/i.test(text)) {
+    send({
+      method: 'item/agentMessage/delta',
+      params: {
+        threadId: thread.id,
+        turnId,
+        itemId: 'agent-msg',
+        delta: `partial before restart: ${text}`,
+      },
+    });
+    send({
+      method: 'item/started',
+      params: {
+        threadId: thread.id,
+        turnId,
+        startedAtMs: Date.now(),
+        item: {
+          id: 'recover-tool',
+          type: 'commandExecution',
+          command: '/bin/bash -lc echo recover',
+          status: 'inProgress',
+        },
+      },
+    });
+    send({
+      method: 'item/commandExecution/outputDelta',
+      params: {
+        threadId: thread.id,
+        turnId,
+        itemId: 'recover-tool',
+        delta: 'recover tool output\n',
+      },
+    });
+  }
   thread.timer = setTimeout(() => completeTurn(thread, turnId, text), delay);
   return { turn: { id: turnId, status: 'running', items: [] } };
 }