fix(telegram): align progress-window tests with rebased core types

Post-rebase onto main, check-test-types/lint failed on our touched test
files (runtime unaffected):
- core's onVerboseProgressVisibility now takes a thunk (isActive: () =>
  boolean); the dispatch test passed a bare boolean. Pass () => true.
- our TelegramDraftStream additions (finalizeToPreview,
  rotateToNewMessageDeferringDelete) are required members; the QA-e2e
  mock streams omitted them. Add both to every mock stream.
- drop a redundant 'as string' cast (oxlint no-unnecessary-type-assertion).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

extensions/telegram/src/bot-message-dispatch.test.ts

@@ -3394,7 +3394,7 @@ describe("dispatchTelegramMessage draft streaming", () => {
 
     // The interim block text never reached the window (neither update nor preview).
     const windowTexts = [
-      ...answerDraftStream.update.mock.calls.map((call) => call[0] as string),
+      ...answerDraftStream.update.mock.calls.map((call) => call[0]),
       ...answerDraftStream.updatePreview.mock.calls.map(
         (call) => (call[0] as { text?: string }).text ?? "",
       ),
@@ -3441,7 +3441,7 @@ describe("dispatchTelegramMessage draft streaming", () => {
     const { answerDraftStream } = setupDraftStreams({ answerMessageId: 2001 });
     dispatchReplyWithBufferedBlockDispatcher.mockImplementation(
       async ({ dispatcherOptions, replyOptions }) => {
-        replyOptions?.onVerboseProgressVisibility?.(true);
+        replyOptions?.onVerboseProgressVisibility?.(() => true);
         await replyOptions?.onToolStart?.({ name: "exec", phase: "start" });
         await dispatcherOptions.deliver({ text: "Done" }, { kind: "final" });
         return { queuedFinal: true };

extensions/telegram/src/channel-message-flows.qa.e2e.test.ts

@@ -21,6 +21,8 @@ describe("channel message flows QA e2e", () => {
       stop: vi.fn(async () => {}),
       messageId: vi.fn(() => 17),
       forceNewMessage: vi.fn(),
+      finalizeToPreview: vi.fn(async () => undefined),
+      rotateToNewMessageDeferringDelete: vi.fn(() => undefined),
     };
   }
 
@@ -40,6 +42,8 @@ describe("channel message flows QA e2e", () => {
       stop: vi.fn(async () => {}),
       messageId: vi.fn(() => 17),
       forceNewMessage: vi.fn(),
+      finalizeToPreview: vi.fn(async () => undefined),
+      rotateToNewMessageDeferringDelete: vi.fn(() => undefined),
     };
     const sendFinal = vi.fn(async () => {
       events.push("final");
@@ -88,6 +92,8 @@ describe("channel message flows QA e2e", () => {
       stop: vi.fn(async () => {}),
       messageId: vi.fn(() => 17),
       forceNewMessage: vi.fn(),
+      finalizeToPreview: vi.fn(async () => undefined),
+      rotateToNewMessageDeferringDelete: vi.fn(() => undefined),
     };
     const sendFinal = vi.fn(async () => ({ messageId: "99", chatId: "123" }));
 
@@ -120,6 +126,8 @@ describe("channel message flows QA e2e", () => {
       stop: vi.fn(async () => {}),
       messageId: vi.fn(() => 17),
       forceNewMessage: vi.fn(),
+      finalizeToPreview: vi.fn(async () => undefined),
+      rotateToNewMessageDeferringDelete: vi.fn(() => undefined),
     };
 
     await expect(