refactor(agents): unify subagent announce delivery pipeline

Co-authored-by: Smith Labs <SmithLabsLLC@users.noreply.github.com>
Co-authored-by: Do Cao Hieu <docaohieu2808@users.noreply.github.com>

src/telegram/send.test.ts

@@ -196,6 +196,10 @@ describe("sendMessageTelegram", () => {
     for (const testCase of cases) {
       botCtorSpy.mockClear();
       loadConfig.mockReturnValue(testCase.cfg);
+      botApi.sendMessage.mockResolvedValue({
+        message_id: 1,
+        chat: { id: "123" },
+      });
       await sendMessageTelegram("123", "hi", testCase.opts);
       expect(botCtorSpy, testCase.name).toHaveBeenCalledWith(
         "tok",
@@ -325,6 +329,40 @@ describe("sendMessageTelegram", () => {
     }
   });
 
+  it("fails when Telegram text send returns no message_id", async () => {
+    const sendMessage = vi.fn().mockResolvedValue({
+      chat: { id: "123" },
+    });
+    const api = { sendMessage } as unknown as {
+      sendMessage: typeof sendMessage;
+    };
+
+    await expect(
+      sendMessageTelegram("123", "hi", {
+        token: "tok",
+        api,
+      }),
+    ).rejects.toThrow(/returned no message_id/i);
+  });
+
+  it("fails when Telegram media send returns no message_id", async () => {
+    mockLoadedMedia({ contentType: "image/png", fileName: "photo.png" });
+    const sendPhoto = vi.fn().mockResolvedValue({
+      chat: { id: "123" },
+    });
+    const api = { sendPhoto } as unknown as {
+      sendPhoto: typeof sendPhoto;
+    };
+
+    await expect(
+      sendMessageTelegram("123", "caption", {
+        token: "tok",
+        api,
+        mediaUrl: "https://example.com/photo.png",
+      }),
+    ).rejects.toThrow(/returned no message_id/i);
+  });
+
   it("uses native fetch for BAN compatibility when api is omitted", async () => {
     const originalFetch = globalThis.fetch;
     const originalBun = (globalThis as { Bun?: unknown }).Bun;