docs(changelog): note cron delivered-relay regression coverage (#15737) (thanks @brandonwise)

Fixes #15692

The previous fix was too broad — it removed the relay for ALL isolated jobs.
This broke backwards compatibility for jobs without explicit delivery config.

The correct behavior is:
- If job.delivery exists → isolated runner handles it via runSubagentAnnounceFlow
- If only legacy payload.deliver fields → relay to main if requested (original behavior)

This addresses Greptile's review feedback about runIsolatedAgentJob being an
injected dependency that might not call runSubagentAnnounceFlow.

Uses resolveCronDeliveryPlan().source to distinguish between explicit delivery
config and legacy payload-only jobs.

CHANGELOG.md

@@ -37,6 +37,7 @@ Docs: https://docs.openclaw.ai
 - Gateway/Restart: clear stale command-queue and heartbeat wake runtime state after SIGUSR1 in-process restarts to prevent zombie gateway behavior where queued work stops draining. (#15195) Thanks @joeykrug.
 - Onboarding/CLI: restore terminal state without resuming paused `stdin`, so onboarding exits cleanly after choosing Web UI and the installer returns instead of appearing stuck.
 - Auth/OpenAI Codex: share OAuth login handling across onboarding and `models auth login --provider openai-codex`, keep onboarding alive when OAuth fails, and surface a direct OAuth help note instead of terminating the wizard. (#15406, follow-up to #14552) Thanks @zhiluo20.
+- Cron: add regression coverage for announce-mode isolated jobs so runs that already report `delivered: true` do not enqueue duplicate main-session relays, including delivery configs where `mode` is omitted and defaults to announce. (#15737) Thanks @brandonwise.
 - Onboarding/Providers: add vLLM as an onboarding provider with model discovery, auth profile wiring, and non-interactive auth-choice validation. (#12577) Thanks @gejifeng.
 - Onboarding/Providers: preserve Hugging Face auth intent in auth-choice remapping (`tokenProvider=huggingface` with `authChoice=apiKey`) and skip env-override prompts when an explicit token is provided. (#13472) Thanks @Josephrp.
 - OpenAI Codex/Spark: implement end-to-end `gpt-5.3-codex-spark` support across fallback/thinking/model resolution and `models list` forward-compat visibility. (#14990, #15174) Thanks @L-U-C-K-Y, @loiie45e.

src/cron/service.delivery-plan.test.ts

@@ -89,4 +89,47 @@ describe("CronService delivery plan consistency", () => {
     cron.stop();
     await store.cleanup();
   });
+
+  it("does not enqueue duplicate relay when isolated run marks delivery handled", async () => {
+    const store = await makeStorePath();
+    const enqueueSystemEvent = vi.fn();
+    const requestHeartbeatNow = vi.fn();
+    const runIsolatedAgentJob = vi.fn(async () => ({
+      status: "ok" as const,
+      summary: "done",
+      delivered: true,
+    }));
+    const cron = new CronService({
+      cronEnabled: true,
+      storePath: store.storePath,
+      log: noopLogger,
+      enqueueSystemEvent,
+      requestHeartbeatNow,
+      runIsolatedAgentJob,
+    });
+    await cron.start();
+    const job = await cron.add({
+      name: "announce-delivered",
+      schedule: { kind: "every", everyMs: 60_000, anchorMs: Date.now() },
+      sessionTarget: "isolated",
+      wakeMode: "now",
+      payload: {
+        kind: "agentTurn",
+        message: "hello",
+      },
+      delivery: { channel: "telegram", to: "123" } as unknown as {
+        mode: "none" | "announce";
+        channel?: string;
+        to?: string;
+      },
+    });
+
+    const result = await cron.run(job.id, "force");
+    expect(result).toEqual({ ok: true, ran: true });
+    expect(enqueueSystemEvent).not.toHaveBeenCalled();
+    expect(requestHeartbeatNow).not.toHaveBeenCalled();
+
+    cron.stop();
+    await store.cleanup();
+  });
 });