diff --git a/src/agents/subagent-announce.ts b/src/agents/subagent-announce.ts
index 5d6f5501060..cd6545a2df9 100644
--- a/src/agents/subagent-announce.ts
+++ b/src/agents/subagent-announce.ts
@@ -556,7 +556,11 @@ async function maybeQueueSubagentAnnounce(params: {
   triggerMessage: string;
   summaryLine?: string;
   requesterOrigin?: DeliveryContext;
+  signal?: AbortSignal;
 }): Promise<"steered" | "queued" | "none"> {
+  if (params.signal?.aborted) {
+    return "none";
+  }
   const { cfg, entry } = loadRequesterSessionEntry(params.requesterSessionKey);
   const canonicalKey = resolveRequesterStoreKey(cfg, params.requesterSessionKey);
   const sessionId = entry?.sessionId;
@@ -637,7 +641,14 @@ async function sendSubagentAnnounceDirectly(params: {
   completionDirectOrigin?: DeliveryContext;
   directOrigin?: DeliveryContext;
   requesterIsSubagent: boolean;
+  signal?: AbortSignal;
 }): Promise<SubagentAnnounceDeliveryResult> {
+  if (params.signal?.aborted) {
+    return {
+      delivered: false,
+      path: "none",
+    };
+  }
   const cfg = loadConfig();
   const announceTimeoutMs = resolveSubagentAnnounceTimeoutMs(cfg);
   const canonicalRequesterSessionKey = resolveRequesterStoreKey(
@@ -691,6 +702,12 @@ async function sendSubagentAnnounceDirectly(params: {
           completionDirectOrigin?.threadId != null && completionDirectOrigin.threadId !== ""
             ? String(completionDirectOrigin.threadId)
             : undefined;
+        if (params.signal?.aborted) {
+          return {
+            delivered: false,
+            path: "none",
+          };
+        }
         await callGateway({
           method: "send",
           params: {
@@ -717,6 +734,12 @@ async function sendSubagentAnnounceDirectly(params: {
       directOrigin?.threadId != null && directOrigin.threadId !== ""
         ? String(directOrigin.threadId)
         : undefined;
+    if (params.signal?.aborted) {
+      return {
+        delivered: false,
+        path: "none",
+      };
+    }
     await callGateway({
       method: "agent",
       params: {
@@ -761,7 +784,14 @@ async function deliverSubagentAnnouncement(params: {
   completionRouteMode?: "bound" | "fallback" | "hook";
   spawnMode?: SpawnSubagentMode;
   directIdempotencyKey: string;
+  signal?: AbortSignal;
 }): Promise<SubagentAnnounceDeliveryResult> {
+  if (params.signal?.aborted) {
+    return {
+      delivered: false,
+      path: "none",
+    };
+  }
   // Non-completion mode mirrors historical behavior: try queued/steered delivery first,
   // then (only if not queued) attempt direct delivery.
   if (!params.expectsCompletionMessage) {
@@ -771,6 +801,7 @@ async function deliverSubagentAnnouncement(params: {
       triggerMessage: params.triggerMessage,
       summaryLine: params.summaryLine,
       requesterOrigin: params.requesterOrigin,
+      signal: params.signal,
     });
     const queued = queueOutcomeToDeliveryResult(queueOutcome);
     if (queued.delivered) {
@@ -791,6 +822,7 @@ async function deliverSubagentAnnouncement(params: {
     directOrigin: params.directOrigin,
     requesterIsSubagent: params.requesterIsSubagent,
     expectsCompletionMessage: params.expectsCompletionMessage,
+    signal: params.signal,
   });
   if (direct.delivered || !params.expectsCompletionMessage) {
     return direct;
@@ -804,6 +836,7 @@ async function deliverSubagentAnnouncement(params: {
     triggerMessage: params.triggerMessage,
     summaryLine: params.summaryLine,
     requesterOrigin: params.requesterOrigin,
+    signal: params.signal,
   });
   if (queueOutcome === "steered" || queueOutcome === "queued") {
     return queueOutcomeToDeliveryResult(queueOutcome);
@@ -956,6 +989,7 @@ export async function runSubagentAnnounceFlow(params: {
   announceType?: SubagentAnnounceType;
   expectsCompletionMessage?: boolean;
   spawnMode?: SpawnSubagentMode;
+  signal?: AbortSignal;
 }): Promise<boolean> {
   let didAnnounce = false;
   const expectsCompletionMessage = params.expectsCompletionMessage === true;
@@ -1216,6 +1250,7 @@ export async function runSubagentAnnounceFlow(params: {
       completionRouteMode: completionResolution.routeMode,
       spawnMode: params.spawnMode,
       directIdempotencyKey,
+      signal: params.signal,
     });
     didAnnounce = delivery.delivered;
     if (!delivery.delivered && delivery.path === "direct" && delivery.error) {
diff --git a/src/cron/isolated-agent.delivers-response-has-heartbeat-ok-but-includes.test.ts b/src/cron/isolated-agent.delivers-response-has-heartbeat-ok-but-includes.test.ts
index f42e314831f..0a3a151e5a6 100644
--- a/src/cron/isolated-agent.delivers-response-has-heartbeat-ok-but-includes.test.ts
+++ b/src/cron/isolated-agent.delivers-response-has-heartbeat-ok-but-includes.test.ts
@@ -133,4 +133,56 @@ describe("runCronIsolatedAgentTurn", () => {
       expect(deps.sendMessageTelegram).not.toHaveBeenCalled();
     });
   });
+
+  it("skips structured outbound delivery when timeout abort is already set", async () => {
+    await withTempCronHome(async (home) => {
+      const storePath = await writeSessionStore(home, {
+        lastProvider: "telegram",
+        lastChannel: "telegram",
+        lastTo: "123",
+      });
+      const deps: CliDeps = {
+        sendMessageSlack: vi.fn(),
+        sendMessageWhatsApp: vi.fn(),
+        sendMessageTelegram: vi.fn().mockResolvedValue({
+          messageId: "t1",
+          chatId: "123",
+        }),
+        sendMessageDiscord: vi.fn(),
+        sendMessageSignal: vi.fn(),
+        sendMessageIMessage: vi.fn(),
+      };
+      const controller = new AbortController();
+      controller.abort("cron: job execution timed out");
+
+      vi.mocked(runEmbeddedPiAgent).mockResolvedValue({
+        payloads: [{ text: "HEARTBEAT_OK", mediaUrl: "https://example.com/img.png" }],
+        meta: {
+          durationMs: 5,
+          agentMeta: { sessionId: "s", provider: "p", model: "m" },
+        },
+      });
+
+      const res = await runCronIsolatedAgentTurn({
+        cfg: makeCfg(home, storePath),
+        deps,
+        job: {
+          ...makeJob({
+            kind: "agentTurn",
+            message: "do it",
+          }),
+          delivery: { mode: "announce", channel: "telegram", to: "123" },
+        },
+        message: "do it",
+        sessionKey: "cron:job-1",
+        signal: controller.signal,
+        lane: "cron",
+      });
+
+      expect(res.status).toBe("error");
+      expect(res.error).toContain("timed out");
+      expect(deps.sendMessageTelegram).not.toHaveBeenCalled();
+      expect(runSubagentAnnounceFlow).not.toHaveBeenCalled();
+    });
+  });
 });
diff --git a/src/cron/isolated-agent/run.ts b/src/cron/isolated-agent/run.ts
index 6d59a8e14e0..5af6119a151 100644
--- a/src/cron/isolated-agent/run.ts
+++ b/src/cron/isolated-agent/run.ts
@@ -156,10 +156,19 @@ export async function runCronIsolatedAgentTurn(params: {
   job: CronJob;
   message: string;
   abortSignal?: AbortSignal;
+  signal?: AbortSignal;
   sessionKey: string;
   agentId?: string;
   lane?: string;
 }): Promise<RunCronAgentTurnResult> {
+  const abortSignal = params.abortSignal ?? params.signal;
+  const isAborted = () => abortSignal?.aborted === true;
+  const abortReason = () => {
+    const reason = abortSignal?.reason;
+    return typeof reason === "string" && reason.trim()
+      ? reason.trim()
+      : "cron: job execution timed out";
+  };
   const isFastTestEnv = process.env.OPENCLAW_TEST_FAST === "1";
   const defaultAgentId = resolveDefaultAgentId(params.cfg);
   const requestedAgentId =
@@ -473,8 +482,8 @@ export async function runCronIsolatedAgentTurn(params: {
       agentDir,
       fallbacksOverride: resolveAgentModelFallbacksOverride(params.cfg, agentId),
       run: (providerOverride, modelOverride) => {
-        if (params.abortSignal?.aborted) {
-          throw new Error("cron: isolated run aborted");
+        if (abortSignal?.aborted) {
+          throw new Error(abortReason());
         }
         if (isCliProvider(providerOverride, cfgWithAgentDefaults)) {
           const cliSessionId = getCliSessionId(cronSession.sessionEntry, providerOverride);
@@ -517,7 +526,7 @@ export async function runCronIsolatedAgentTurn(params: {
           runId: cronSession.sessionEntry.sessionId,
           requireExplicitMessageTarget: true,
           disableMessageTool: deliveryRequested,
-          abortSignal: params.abortSignal,
+          abortSignal,
         });
       },
     });
@@ -529,6 +538,10 @@ export async function runCronIsolatedAgentTurn(params: {
     return withRunSession({ status: "error", error: String(err) });
   }
 
+  if (isAborted()) {
+    return withRunSession({ status: "error", error: abortReason() });
+  }
+
   const payloads = runResult.payloads ?? [];
 
   // Update token+model fields in the session store.
@@ -584,6 +597,10 @@ export async function runCronIsolatedAgentTurn(params: {
     }
     await persistSessionEntry();
   }
+
+  if (isAborted()) {
+    return withRunSession({ status: "error", error: abortReason(), ...telemetry });
+  }
   const firstText = payloads[0]?.text ?? "";
   let summary = pickSummaryFromPayloads(payloads) ?? pickSummaryFromOutput(firstText);
   let outputText = pickLastNonEmptyTextFromPayloads(payloads);
@@ -672,6 +689,9 @@ export async function runCronIsolatedAgentTurn(params: {
               ? [{ text: synthesizedText }]
               : [];
         if (payloadsForDelivery.length > 0) {
+          if (isAborted()) {
+            return withRunSession({ status: "error", error: abortReason(), ...telemetry });
+          }
           const deliveryResults = await deliverOutboundPayloads({
             cfg: cfgWithAgentDefaults,
             channel: resolvedDelivery.channel,
@@ -683,6 +703,7 @@ export async function runCronIsolatedAgentTurn(params: {
             identity,
             bestEffort: deliveryBestEffort,
             deps: createOutboundSendDeps(params.deps),
+            abortSignal,
           });
           delivered = deliveryResults.length > 0;
         }
@@ -765,6 +786,9 @@ export async function runCronIsolatedAgentTurn(params: {
         return withRunSession({ status: "ok", summary, outputText, delivered: true, ...telemetry });
       }
       try {
+        if (isAborted()) {
+          return withRunSession({ status: "error", error: abortReason(), ...telemetry });
+        }
         const didAnnounce = await runSubagentAnnounceFlow({
           childSessionKey: agentSessionKey,
           childRunId: `${params.job.id}:${runSessionId}`,
@@ -785,6 +809,7 @@ export async function runCronIsolatedAgentTurn(params: {
           endedAt: runEndedAt,
           outcome: { status: "ok" },
           announceType: "cron job",
+          signal: abortSignal,
         });
         if (didAnnounce) {
           delivered = true;
diff --git a/src/cron/service.issue-regressions.test.ts b/src/cron/service.issue-regressions.test.ts
index 878fad4149c..a0838b6f6f4 100644
--- a/src/cron/service.issue-regressions.test.ts
+++ b/src/cron/service.issue-regressions.test.ts
@@ -731,6 +731,60 @@ describe("Cron issue regressions", () => {
     expect(job?.state.lastError).toContain("timed out");
   });
 
+  it("suppresses isolated follow-up side effects after timeout", async () => {
+    vi.useRealTimers();
+    const store = await makeStorePath();
+    const scheduledAt = Date.parse("2026-02-15T13:00:00.000Z");
+    const enqueueSystemEvent = vi.fn();
+
+    const cronJob = createIsolatedRegressionJob({
+      id: "timeout-side-effects",
+      name: "timeout side effects",
+      scheduledAt,
+      schedule: { kind: "every", everyMs: 60_000, anchorMs: scheduledAt },
+      payload: { kind: "agentTurn", message: "work", timeoutSeconds: 0.01 },
+      state: { nextRunAtMs: scheduledAt },
+    });
+    await writeCronJobs(store.storePath, [cronJob]);
+
+    let now = scheduledAt;
+    const state = createCronServiceState({
+      cronEnabled: true,
+      storePath: store.storePath,
+      log: noopLogger,
+      nowMs: () => now,
+      enqueueSystemEvent,
+      requestHeartbeatNow: vi.fn(),
+      runIsolatedAgentJob: vi.fn(async (params) => {
+        const abortSignal = params.abortSignal;
+        await new Promise<void>((resolve, reject) => {
+          const onAbort = () => {
+            abortSignal?.removeEventListener("abort", onAbort);
+            now += 100;
+            reject(new Error("aborted"));
+          };
+          abortSignal?.addEventListener("abort", onAbort, { once: true });
+        });
+        return {
+          status: "ok" as const,
+          summary: "late-summary",
+          delivered: false,
+          error:
+            abortSignal?.aborted && typeof abortSignal.reason === "string"
+              ? abortSignal.reason
+              : undefined,
+        };
+      }),
+    });
+
+    await onTimer(state);
+
+    const jobAfterTimeout = state.store?.jobs.find((j) => j.id === "timeout-side-effects");
+    expect(jobAfterTimeout?.state.lastStatus).toBe("error");
+    expect(jobAfterTimeout?.state.lastError).toContain("timed out");
+    expect(enqueueSystemEvent).not.toHaveBeenCalled();
+  });
+
   it("applies timeoutSeconds to manual cron.run isolated executions", async () => {
     vi.useRealTimers();
     const store = await makeStorePath();
diff --git a/src/cron/service/timer.ts b/src/cron/service/timer.ts
index 3f10e9c29b5..cb403762b56 100644
--- a/src/cron/service/timer.ts
+++ b/src/cron/service/timer.ts
@@ -72,8 +72,8 @@ export async function executeJobCoreWithTimeout(
       executeJobCore(state, job, runAbortController.signal),
       new Promise<never>((_, reject) => {
         timeoutId = setTimeout(() => {
-          runAbortController.abort(new Error("cron: job execution timed out"));
-          reject(new Error("cron: job execution timed out"));
+          runAbortController.abort(timeoutErrorMessage());
+          reject(new Error(timeoutErrorMessage()));
         }, jobTimeoutMs);
       }),
     ]);
@@ -91,6 +91,16 @@ function resolveRunConcurrency(state: CronServiceState): number {
   }
   return Math.max(1, Math.floor(raw));
 }
+function timeoutErrorMessage(): string {
+  return "cron: job execution timed out";
+}
+
+function isAbortError(err: unknown): boolean {
+  if (!(err instanceof Error)) {
+    return false;
+  }
+  return err.name === "AbortError" || err.message === timeoutErrorMessage();
+}
 /**
  * Exponential backoff delays (in ms) indexed by consecutive error count.
  * After the last entry the delay stays constant.
@@ -354,14 +364,15 @@ export async function onTimer(state: CronServiceState) {
         const result = await executeJobCoreWithTimeout(state, job);
         return { jobId: id, ...result, startedAt, endedAt: state.deps.nowMs() };
       } catch (err) {
+        const errorText = isAbortError(err) ? timeoutErrorMessage() : String(err);
         state.deps.log.warn(
           { jobId: id, jobName: job.name, timeoutMs: jobTimeoutMs ?? null },
-          `cron: job failed: ${String(err)}`,
+          `cron: job failed: ${errorText}`,
         );
         return {
           jobId: id,
           status: "error",
-          error: String(err),
+          error: errorText,
           startedAt,
           endedAt: state.deps.nowMs(),
         };
@@ -596,6 +607,9 @@ export async function executeJobCore(
   job: CronJob,
   abortSignal?: AbortSignal,
 ): Promise<CronRunOutcome & CronRunTelemetry & { delivered?: boolean }> {
+  if (abortSignal?.aborted) {
+    return { status: "error", error: timeoutErrorMessage() };
+  }
   if (job.sessionTarget === "main") {
     const text = resolveJobPayloadTextForMain(job);
     if (!text) {
@@ -622,6 +636,9 @@ export async function executeJobCore(
 
       let heartbeatResult: HeartbeatRunResult;
       for (;;) {
+        if (abortSignal?.aborted) {
+          return { status: "error", error: timeoutErrorMessage() };
+        }
         heartbeatResult = await state.deps.runHeartbeatOnce({
           reason,
           agentId: job.agentId,
@@ -665,7 +682,7 @@ export async function executeJobCore(
     return { status: "skipped", error: "isolated job requires payload.kind=agentTurn" };
   }
   if (abortSignal?.aborted) {
-    return { status: "error", error: "cron: job execution aborted" };
+    return { status: "error", error: timeoutErrorMessage() };
   }
 
   const res = await state.deps.runIsolatedAgentJob({
@@ -674,6 +691,10 @@ export async function executeJobCore(
     abortSignal,
   });
 
+  if (abortSignal?.aborted) {
+    return { status: "error", error: timeoutErrorMessage() };
+  }
+
   // Post a short summary back to the main session — but only when the
   // isolated run did NOT already deliver its output to the target channel.
   // When `res.delivered` is true the announce flow (or direct outbound