test(telegram): cover handler error boundary

extensions/telegram/src/bot.create-telegram-bot.test.ts

@@ -179,6 +179,22 @@ describe("createTelegramBot", () => {
     expect(throttlerSpy).toHaveBeenCalledTimes(1);
     expect(useSpy).toHaveBeenCalledWith("throttler");
   });
+
+  it("logs middleware errors through grammY catch without rethrowing", () => {
+    const runtime = {
+      error: vi.fn(),
+    } as unknown as NonNullable<TelegramBotOptions["runtime"]>;
+    const bot = createTelegramBot({ token: "tok", runtime });
+    const catchMock = bot.catch as unknown as {
+      mock: { calls: Array<[(err: unknown) => void]> };
+    };
+    const errorHandler = catchMock.mock.calls[0]?.[0];
+
+    expect(errorHandler).toBeTypeOf("function");
+    expect(() => errorHandler?.(new Error("handler boom"))).not.toThrow();
+    expect(runtime.error).toHaveBeenCalledWith(expect.stringContaining("telegram bot error:"));
+  });
+
   it("uses wrapped fetch when global fetch is available", () => {
     const originalFetch = globalThis.fetch;
     const fetchSpy = vi.fn() as unknown as typeof fetch;