fix(cron): enable completion direct send for text-only announce delivery (#29151)

src/agents/subagent-announce.ts

@@ -70,12 +70,17 @@ function buildCompletionDeliveryMessage(params: {
   subagentName: string;
   spawnMode?: SpawnSubagentMode;
   outcome?: SubagentRunOutcome;
+  announceType?: SubagentAnnounceType;
 }): string {
   const findingsText = params.findings.trim();
   if (isAnnounceSkip(findingsText)) {
     return "";
   }
   const hasFindings = findingsText.length > 0 && findingsText !== "(no output)";
+  // Cron completions are standalone messages — skip the subagent status header.
+  if (params.announceType === "cron job") {
+    return hasFindings ? findingsText : "";
+  }
   const header = (() => {
     if (params.outcome?.status === "error") {
       return params.spawnMode === "session"
@@ -1278,6 +1283,7 @@ export async function runSubagentAnnounceFlow(params: {
       subagentName,
       spawnMode: params.spawnMode,
       outcome,
+      announceType,
     });
     const internalSummaryMessage = [
       `[System Message] [sessionId: ${announceSessionId}] A ${announceType} "${taskLabel}" just ${statusLabel}.`,

src/cron/isolated-agent.direct-delivery-forum-topics.test.ts

@@ -1,5 +1,5 @@
 import "./isolated-agent.mocks.js";
-import { beforeEach, describe, expect, it } from "vitest";
+import { beforeEach, describe, expect, it, vi } from "vitest";
 import { runSubagentAnnounceFlow } from "../agents/subagent-announce.js";
 import {
   createCliDeps,
@@ -56,6 +56,10 @@ describe("runCronIsolatedAgentTurn forum topic delivery", () => {
 
       expect(res.status).toBe("ok");
       expect(runSubagentAnnounceFlow).toHaveBeenCalledTimes(1);
+      const announceArgs = vi.mocked(runSubagentAnnounceFlow).mock.calls[0]?.[0] as
+        | { expectsCompletionMessage?: boolean }
+        | undefined;
+      expect(announceArgs?.expectsCompletionMessage).toBe(true);
       expect(deps.sendMessageTelegram).not.toHaveBeenCalled();
     });
   });

src/cron/isolated-agent.skips-delivery-without-whatsapp-recipient-besteffortdeliver-true.test.ts

@@ -89,6 +89,9 @@ async function expectExplicitTelegramTargetAnnounce(params: {
     expect(announceArgs?.requesterOrigin?.to).toBe("123");
     expect(announceArgs?.roundOneReply).toBe(params.expectedText);
     expect(announceArgs?.bestEffortDeliver).toBe(false);
+    expect((announceArgs as { expectsCompletionMessage?: boolean })?.expectsCompletionMessage).toBe(
+      true,
+    );
     expect(deps.sendMessageTelegram).not.toHaveBeenCalled();
   });
 }

src/cron/isolated-agent/delivery-dispatch.ts

@@ -309,6 +309,10 @@ export async function dispatchCronDelivery(
         timeoutMs: params.timeoutMs,
         cleanup: params.job.deleteAfterRun ? "delete" : "keep",
         roundOneReply: synthesizedText,
+        // Cron output is a finished completion message: send it directly to the
+        // target channel via the completion-direct-send path rather than injecting
+        // a trigger message into the (likely idle) main agent session.
+        expectsCompletionMessage: true,
         // Keep delivery outcome truthful for cron state: if outbound send fails,
         // announce flow must report false so caller can apply best-effort policy.
         bestEffortDeliver: false,