fix(telegram): skip nullish final text sends (land #30969 by @haosenwang1018)

Landed-from: #30969
Contributor: @haosenwang1018
Co-authored-by: Sense_wang <167664334+haosenwang1018@users.noreply.github.com>

CHANGELOG.md

@@ -102,6 +102,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- Telegram/Empty final replies: skip outbound send for null/undefined final text payloads without media so Telegram typing indicators do not linger on `text must be non-empty` errors. Landed from contributor PR #30969 by @haosenwang1018. Thanks @haosenwang1018.
 - Routing/Binding peer-kind parity: treat `peer.kind` `group` and `channel` as equivalent for binding scope matching (while keeping `direct` separate) so Slack/public channel bindings do not silently fall through. Landed from contributor PR #31135 by @Sid-Qin. Thanks @Sid-Qin.
 - Agents/FS workspace default: honor documented host file-tool default `tools.fs.workspaceOnly=false` when unset so host `write`/`edit` calls are not incorrectly workspace-restricted unless explicitly enabled. Landed from contributor PR #31128 by @SaucePackets. Thanks @SaucePackets.
 - Gateway/CLI session recovery: handle expired CLI session IDs gracefully by clearing stale session state and retrying without crashing gateway runs. Landed from contributor PR #31090 by @frankekn. Thanks @frankekn.

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

@@ -1064,6 +1064,26 @@ describe("dispatchTelegramMessage draft streaming", () => {
     expect(editMessageTelegram).not.toHaveBeenCalled();
   });
 
+  it.each([undefined, null] as const)(
+    "skips outbound send when final payload text is %s and has no media",
+    async (emptyText) => {
+      setupDraftStreams({ answerMessageId: 999 });
+      dispatchReplyWithBufferedBlockDispatcher.mockImplementation(async ({ dispatcherOptions }) => {
+        await dispatcherOptions.deliver(
+          { text: emptyText as unknown as string },
+          { kind: "final" },
+        );
+        return { queuedFinal: true };
+      });
+      deliverReplies.mockResolvedValue({ delivered: true });
+
+      await dispatchWithContext({ context: createContext(), streamMode: "partial" });
+
+      expect(deliverReplies).not.toHaveBeenCalled();
+      expect(editMessageTelegram).not.toHaveBeenCalled();
+    },
+  );
+
   it("keeps reasoning and answer streaming in separate preview lanes", async () => {
     const { answerDraftStream, reasoningDraftStream } = setupDraftStreams({
       answerMessageId: 999,

src/telegram/bot-message-dispatch.ts

@@ -548,7 +548,7 @@ export const dispatchTelegramMessage = async ({
             reasoningStepState.resetForNextStep();
           }
           const canSendAsIs =
-            hasMedia || typeof payload.text !== "string" || payload.text.length > 0;
+            hasMedia || (typeof payload.text === "string" && payload.text.length > 0);
           if (!canSendAsIs) {
             if (info.kind === "final") {
               await flushBufferedFinalAnswer();