fix(cron): treat embedded error payloads as run failures

(cherry picked from commit 50fd31c070)

src/cron/isolated-agent.uses-last-non-empty-agent-text-as.test.ts

@@ -27,9 +27,9 @@ function makeDeps(): CliDeps {
   };
 }
 
-function mockEmbeddedTexts(texts: string[]) {
+function mockEmbeddedPayloads(payloads: Array<{ text?: string; isError?: boolean }>) {
   vi.mocked(runEmbeddedPiAgent).mockResolvedValue({
-    payloads: texts.map((text) => ({ text })),
+    payloads,
     meta: {
       durationMs: 5,
       agentMeta: { sessionId: "s", provider: "p", model: "m" },
@@ -37,6 +37,10 @@ function mockEmbeddedTexts(texts: string[]) {
   });
 }
 
+function mockEmbeddedTexts(texts: string[]) {
+  mockEmbeddedPayloads(texts.map((text) => ({ text })));
+}
+
 function mockEmbeddedOk() {
   mockEmbeddedTexts(["ok"]);
 }
@@ -174,6 +178,25 @@ describe("runCronIsolatedAgentTurn", () => {
     });
   });
 
+  it("returns error when embedded run payload is marked as error", async () => {
+    await withTempHome(async (home) => {
+      mockEmbeddedPayloads([
+        {
+          text: "⚠️ 🛠️ Exec failed: /bin/bash: line 1: python: command not found",
+          isError: true,
+        },
+      ]);
+      const { res } = await runCronTurn(home, {
+        jobPayload: DEFAULT_AGENT_TURN_PAYLOAD,
+        mockTexts: null,
+      });
+
+      expect(res.status).toBe("error");
+      expect(res.error).toContain("command not found");
+      expect(res.summary).toContain("Exec failed");
+    });
+  });
+
   it("passes resolved agentDir to runEmbeddedPiAgent", async () => {
     await withTempHome(async (home) => {
       const { res } = await runCronTurn(home, {