fix: make Telegram rich messages opt in

maintainer edit: Telegram Web cannot render sendRichMessage payloads, so keep the rich path available only for explicit opt-in instead of enabling it by default.

nanobot/channels/telegram.py

@@ -351,9 +351,8 @@ class TelegramConfig(Base):
     streaming: bool = True
     # Enable inline keyboard buttons in Telegram messages.
     inline_keyboards: bool = False
-    # Use Bot API 10.1 sendRichMessage for markdown rendering.
+    # Opt in to Bot API 10.1 sendRichMessage for richer markdown rendering.
-    # Disable if Telegram Web shows "message not supported" errors.
+    rich_messages: bool = False
-    rich_messages: bool = True
     stream_edit_interval: float = Field(default=_STREAM_EDIT_INTERVAL_DEFAULT, ge=0.1)
     webhook_url: str = ""
     webhook_listen_host: str = "127.0.0.1"

tests/channels/test_telegram_channel.py

@@ -471,7 +471,7 @@ async def test_send_rich_capability_error_latches_and_falls_back() -> None:
     from telegram.error import BadRequest
 
     channel = TelegramChannel(
-        TelegramConfig(enabled=True, token="123:abc", allow_from=["*"]),
+        TelegramConfig(enabled=True, token="123:abc", allow_from=["*"], rich_messages=True),
         MessageBus(),
     )
     channel._app = _FakeApp(lambda: None)
@@ -490,7 +490,7 @@ async def test_send_rich_bad_request_does_not_latch_capability() -> None:
     from telegram.error import BadRequest
 
     channel = TelegramChannel(
-        TelegramConfig(enabled=True, token="123:abc", allow_from=["*"]),
+        TelegramConfig(enabled=True, token="123:abc", allow_from=["*"], rich_messages=True),
         MessageBus(),
     )
     channel._app = _FakeApp(lambda: None)
@@ -506,10 +506,10 @@ async def test_send_rich_bad_request_does_not_latch_capability() -> None:
 
 
 @pytest.mark.asyncio
-async def test_rich_messages_config_disabled_skips_sendRichMessage() -> None:
+async def test_rich_messages_default_skips_send_rich_message() -> None:
-    """When rich_messages=False, sendRichMessage should not be called."""
+    """By default, sendRichMessage should not be called."""
     channel = TelegramChannel(
-        TelegramConfig(enabled=True, token="123:abc", allow_from=["*"], rich_messages=False),
+        TelegramConfig(enabled=True, token="123:abc", allow_from=["*"]),
         MessageBus(),
     )
     channel._app = _FakeApp(lambda: None)