fix(telegram): keep DM topic typing scoped

gateway/platforms/telegram.py

@@ -2516,6 +2516,7 @@ class TelegramAdapter(BasePlatformAdapter):
                     )
                 except Exception as e:
                     if message_thread_id is not None and self._is_thread_not_found_error(e):
+                        if str(_typing_thread) == self._GENERAL_TOPIC_THREAD_ID:
                             await self._bot.send_chat_action(
                                 chat_id=int(chat_id),
                                 action="typing",

tests/gateway/test_telegram_thread_fallback.py

@@ -179,6 +179,25 @@ async def test_send_typing_retries_without_general_thread_when_not_found():
     ]
 
 
+@pytest.mark.asyncio
+async def test_send_typing_does_not_fall_back_to_root_for_dm_topic():
+    """Typing failures in DM topics should not show an indicator in All Messages."""
+    adapter = _make_adapter()
+    call_log = []
+
+    async def mock_send_chat_action(**kwargs):
+        call_log.append(dict(kwargs))
+        raise FakeBadRequest("Message thread not found")
+
+    adapter._bot = SimpleNamespace(send_chat_action=mock_send_chat_action)
+
+    await adapter.send_typing("12345", metadata={"thread_id": "22182"})
+
+    assert call_log == [
+        {"chat_id": 12345, "action": "typing", "message_thread_id": 22182},
+    ]
+
+
 @pytest.mark.asyncio
 async def test_send_retries_without_thread_on_thread_not_found():
     """When message_thread_id causes 'thread not found', retry without it."""