feat(feishu): render markdown replies as cards

channel/feishu/feishu_channel.py

@@ -28,6 +28,7 @@ from bridge.context import ContextType
 from bridge.reply import Reply, ReplyType
 from channel.chat_channel import ChatChannel, check_prefix
 from channel.feishu.feishu_message import FeishuMessage
+from channel.feishu.feishu_static_card import build_text_delivery
 from common import utils
 from common.expired_dict import ExpiredDict
 from common.log import logger
@@ -628,7 +629,13 @@ class FeiShuChanel(ChatChannel):
         logger.debug(f"[FeiShu] sending reply, type={context.type}, content={reply.content[:100]}...")
         reply_content = reply.content
         content_key = "text"
-        if reply.type == ReplyType.IMAGE_URL:
+        prepared_content_json = None
+        if reply.type == ReplyType.TEXT:
+            msg_type, prepared_content_json = build_text_delivery(
+                reply.content,
+                enabled=conf().get("feishu_markdown_card", True),
+            )
+        elif reply.type == ReplyType.IMAGE_URL:
             # 图片上传
             reply_content = self._upload_image_url(reply.content, access_token)
             if not reply_content:
@@ -690,7 +697,11 @@ class FeiShuChanel(ChatChannel):
         can_reply = is_group and msg and hasattr(msg, 'msg_id') and msg.msg_id
 
         # Build content JSON
-        content_json = json.dumps(reply_content, ensure_ascii=False) if content_key is None else json.dumps({content_key: reply_content}, ensure_ascii=False)
+        content_json = prepared_content_json or (
+            json.dumps(reply_content, ensure_ascii=False)
+            if content_key is None
+            else json.dumps({content_key: reply_content}, ensure_ascii=False)
+        )
         logger.debug(f"[FeiShu] Sending message: msg_type={msg_type}, content={content_json[:200]}")
 
         if can_reply:
@@ -714,6 +725,39 @@ class FeiShuChanel(ChatChannel):
         res = res.json()
         if res.get("code") == 0:
             logger.info(f"[FeiShu] send message success")
+        elif msg_type == "interactive" and reply.type == ReplyType.TEXT:
+            logger.warning(
+                "[FeiShu] Markdown card failed, falling back to text, "
+                f"code={res.get('code')}, msg={res.get('msg')}"
+            )
+            fallback_data = {
+                "msg_type": "text",
+                "content": json.dumps({"text": reply.content}, ensure_ascii=False),
+            }
+            if can_reply:
+                fallback_res = requests.post(
+                    url=url,
+                    headers=headers,
+                    json=fallback_data,
+                    timeout=(5, 10),
+                )
+            else:
+                fallback_data["receive_id"] = context.get("receiver")
+                fallback_res = requests.post(
+                    url=url,
+                    headers=headers,
+                    params=params,
+                    json=fallback_data,
+                    timeout=(5, 10),
+                )
+            fallback_body = fallback_res.json()
+            if fallback_body.get("code") == 0:
+                logger.info("[FeiShu] text fallback sent successfully")
+            else:
+                logger.error(
+                    "[FeiShu] text fallback failed, "
+                    f"code={fallback_body.get('code')}, msg={fallback_body.get('msg')}"
+                )
         else:
             logger.error(f"[FeiShu] send message failed, code={res.get('code')}, msg={res.get('msg')}")
 

channel/feishu/feishu_static_card.py

@@ -0,0 +1,46 @@
+"""Helpers for choosing the native Feishu delivery format for text replies."""
+
+import json
+import re
+from typing import Tuple
+
+
+_BLOCK_MARKDOWN = re.compile(
+    r"(?m)^\s{0,3}(?:#{1,6}\s|>\s|[-*+]\s|\d+[.)]\s|```|~~~)"
+)
+_INLINE_MARKDOWN = re.compile(r"(`[^`\n]+`|\*\*[^*\n]+\*\*|\[[^]\n]+\]\([^)\n]+\))")
+_TABLE_SEPARATOR = re.compile(r"(?m)^\s*\|?\s*:?-{3,}:?\s*(?:\|\s*:?-{3,}:?\s*)+\|?\s*$")
+
+
+def contains_markdown(text: str) -> bool:
+    """Return whether *text* contains syntax that benefits from card Markdown."""
+    if not text:
+        return False
+    return bool(
+        _BLOCK_MARKDOWN.search(text)
+        or _INLINE_MARKDOWN.search(text)
+        or _TABLE_SEPARATOR.search(text)
+    )
+
+
+def build_markdown_card(text: str) -> dict:
+    """Build an inline Card 2.0 payload with one Markdown element."""
+    return {
+        "schema": "2.0",
+        "config": {},
+        "body": {
+            "elements": [
+                {
+                    "tag": "markdown",
+                    "content": text,
+                }
+            ]
+        },
+    }
+
+
+def build_text_delivery(text: str, enabled: bool = True) -> Tuple[str, str]:
+    """Return the Feishu ``msg_type`` and serialized content for a text reply."""
+    if enabled and contains_markdown(text):
+        return "interactive", json.dumps(build_markdown_card(text), ensure_ascii=False)
+    return "text", json.dumps({"text": text}, ensure_ascii=False)

config-template.json

@@ -28,6 +28,7 @@
   "feishu_app_id": "",
   "feishu_app_secret": "",
   "feishu_stream_reply": true,
+  "feishu_markdown_card": true,
   "dingtalk_client_id": "",
   "dingtalk_client_secret": "",
   "wecom_bot_id": "",

config.py

@@ -178,6 +178,7 @@ available_setting = {
     "feishu_event_mode": "websocket",  # Feishu event mode: webhook(HTTP server) or websocket(long connection)
     # Feishu streaming reply (based on the official cardkit streaming-card API; requires the cardkit:card:write permission and Feishu client 7.20+)
     "feishu_stream_reply": True,  # whether to enable streaming reply (typewriter effect); auto-downgrades to non-streaming or shows an upgrade prompt on failure/old clients
+    "feishu_markdown_card": True,  # render non-streaming Markdown replies (including scheduled messages) as Card 2.0; falls back to text on failure
     # DingTalk config
     "dingtalk_client_id": "",  # DingTalk bot Client ID
     "dingtalk_client_secret": "",  # DingTalk bot Client Secret

docs/channels/feishu.mdx

@@ -64,7 +64,8 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
       "channel_type": "feishu",
       "feishu_app_id": "YOUR_APP_ID",
       "feishu_app_secret": "YOUR_APP_SECRET",
-      "feishu_stream_reply": true
+      "feishu_stream_reply": true,
+      "feishu_markdown_card": true
     }
     ```
 
@@ -73,6 +74,7 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
     | `feishu_app_id` | Feishu app App ID | - |
     | `feishu_app_secret` | Feishu app App Secret | - |
     | `feishu_stream_reply` | Enable streaming typewriter reply | `true` |
+    | `feishu_markdown_card` | Render non-streaming Markdown and scheduled text as Card 2.0 | `true` |
   </Tab>
 </Tabs>
 
@@ -98,6 +100,7 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
 | Image messages | ✅ send/receive |
 | Voice messages | ✅ send/receive |
 | Streaming reply | ✅ (powered by Feishu cardkit streaming card) |
+| Markdown card | ✅ for non-streaming and scheduled replies |
 
 <Note>
   Streaming reply requires the `cardkit:card:write` permission (already enabled by one-click creation) and Feishu client version ≥ 7.20. Older clients see an upgrade prompt; if the permission or version is not satisfied, replies fall back to plain text automatically.

docs/ja/channels/feishu.mdx

@@ -61,7 +61,8 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
       "channel_type": "feishu",
       "feishu_app_id": "YOUR_APP_ID",
       "feishu_app_secret": "YOUR_APP_SECRET",
-      "feishu_stream_reply": true
+      "feishu_stream_reply": true,
+      "feishu_markdown_card": true
     }
     ```
 
@@ -70,6 +71,7 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
     | `feishu_app_id` | Feishu アプリの App ID | - |
     | `feishu_app_secret` | Feishu アプリの App Secret | - |
     | `feishu_stream_reply` | ストリーミングタイプライター応答を有効化 | `true` |
+    | `feishu_markdown_card` | 非ストリーミング Markdown と定期配信を Card 2.0 で表示 | `true` |
   </Tab>
 </Tabs>
 
@@ -95,6 +97,7 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
 | 画像メッセージ | ✅ 送受信 |
 | 音声メッセージ | ✅ 送受信 |
 | ストリーミング応答 | ✅（Feishu cardkit ストリーミングカードベース） |
+| Markdown カード | ✅ 非ストリーミング応答と定期配信 |
 
 <Note>
   ストリーミング応答には `cardkit:card:write` 権限（ワンクリック作成では自動付与）と Feishu クライアント 7.20 以上が必要です。古いクライアントではアップグレード案内が表示され、権限/バージョン未充足時は通常テキスト応答に自動フォールバックします。

docs/zh/channels/feishu.mdx

@@ -65,7 +65,8 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
       "channel_type": "feishu",
       "feishu_app_id": "YOUR_APP_ID",
       "feishu_app_secret": "YOUR_APP_SECRET",
-      "feishu_stream_reply": true
+      "feishu_stream_reply": true,
+      "feishu_markdown_card": true
     }
     ```
 
@@ -74,6 +75,7 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
     | `feishu_app_id` | 飞书应用 App ID | - |
     | `feishu_app_secret` | 飞书应用 App Secret | - |
     | `feishu_stream_reply` | 是否开启流式打字机回复 | `true` |
+    | `feishu_markdown_card` | 将非流式 Markdown 与定时推送渲染为 Card 2.0 | `true` |
   </Tab>
 </Tabs>
 
@@ -99,6 +101,7 @@ im:message,im:message.group_at_msg,im:message.group_at_msg:readonly,im:message.p
 | 图片消息 | ✅ 收发 |
 | 语音消息 | ✅ 收发 |
 | 流式回复 | ✅（通过 `feishu_stream_reply` 配置控制，默认开启） |
+| Markdown 卡片 | ✅ 非流式回复与定时推送 |
 
 <Note>
   流式回复需要机器人具备 `cardkit:card:write` 权限（一键创建已默认开通），且接收方飞书客户端版本 ≥ 7.20。低版本客户端会显示升级提示，权限或版本不满足时自动降级为普通文本回复。

tests/test_feishu_static_card.py

@@ -0,0 +1,34 @@
+import json
+
+from channel.feishu.feishu_static_card import build_text_delivery, contains_markdown
+
+
+def test_plain_text_keeps_native_feishu_text_message():
+    msg_type, content = build_text_delivery("hello from CowAgent")
+
+    assert msg_type == "text"
+    assert json.loads(content) == {"text": "hello from CowAgent"}
+
+
+def test_markdown_reply_uses_card_2_markdown_element():
+    msg_type, content = build_text_delivery("**Build complete**\n\n- tests passed")
+
+    card = json.loads(content)
+    assert msg_type == "interactive"
+    assert card["schema"] == "2.0"
+    assert card["body"]["elements"] == [
+        {"tag": "markdown", "content": "**Build complete**\n\n- tests passed"}
+    ]
+
+
+def test_markdown_cards_can_be_disabled():
+    msg_type, content = build_text_delivery("# Status", enabled=False)
+
+    assert msg_type == "text"
+    assert json.loads(content) == {"text": "# Status"}
+
+
+def test_markdown_detection_avoids_common_plain_text_punctuation():
+    assert contains_markdown("release 1.2.0 - all checks passed") is False
+    assert contains_markdown("Use `cow --help` for details") is True
+    assert contains_markdown("| Item | State |\n| --- | --- |\n| API | ready |") is True