refactor(feishu): 将send_text改为send_markdown的别名

所有消息现在都通过markdown卡片发送，简化了消息发送逻辑

bot/feishu.py

@@ -57,55 +57,8 @@ def _split_message(text: str) -> list[str]:
 
 
 async def send_text(receive_id: str, receive_id_type: str, text: str) -> None:
-    """
+    """Alias for send_markdown. All messages are sent as markdown cards."""
-    Send a plain-text message to a Feishu chat or user.
+    await send_markdown(receive_id, receive_id_type, text)
-    Automatically splits long messages into multiple parts with [1/N] headers.
-
-    Args:
-        receive_id: chat_id or open_id depending on receive_id_type.
-        receive_id_type: "chat_id" | "open_id" | "user_id" | "union_id".
-        text: message content.
-    """
-    parts = _split_message(text)
-    loop = asyncio.get_running_loop()
-
-    for i, part in enumerate(parts):
-        logger.debug(
-            "[feishu] send_text to=%s type=%s part=%d/%d len=%d",
-            receive_id, receive_id_type, i + 1, len(parts), len(part),
-        )
-        content = json.dumps({"text": part}, ensure_ascii=False)
-
-        request = (
-            CreateMessageRequest.builder()
-            .receive_id_type(receive_id_type)
-            .request_body(
-                CreateMessageRequestBody.builder()
-                .receive_id(receive_id)
-                .msg_type("text")
-                .content(content)
-                .build()
-            )
-            .build()
-        )
-
-        response = await loop.run_in_executor(
-            None,
-            lambda: _client.im.v1.message.create(request),
-        )
-
-        if not response.success():
-            logger.error(
-                "Feishu send_text failed: code=%s msg=%s",
-                response.code,
-                response.msg,
-            )
-            return
-        else:
-            logger.debug("Sent message part %d/%d to %s (%s)", i + 1, len(parts), receive_id, receive_id_type)
-
-        if len(parts) > 1 and i < len(parts) - 1:
-            await asyncio.sleep(0.3)
 
 
 async def send_markdown(receive_id: str, receive_id_type: str, content: str) -> None: