fix(feishu): keep fenced markdown tables out of card tables

nanobot/channels/feishu/runtime.py

@@ -1388,18 +1388,30 @@ class FeishuChannel(BaseChannel):
 
     def _build_card_elements(self, content: str) -> list[dict]:
         """Split content into div/markdown + table elements for Feishu card."""
+        protected = content
+        code_blocks: list[str] = []
+        for m in self._CODE_BLOCK_RE.finditer(content):
+            code_blocks.append(m.group(1))
+            protected = protected.replace(m.group(1), f"\x00CODE{len(code_blocks) - 1}\x00", 1)
+
         elements, last_end = [], 0
-        for m in self._TABLE_RE.finditer(content):
+        for m in self._TABLE_RE.finditer(protected):
-            before = content[last_end : m.start()]
+            before = protected[last_end : m.start()]
             if before.strip():
                 elements.extend(self._split_headings(before))
             elements.append(
                 self._parse_md_table(m.group(1)) or {"tag": "markdown", "content": m.group(1)}
             )
             last_end = m.end()
-        remaining = content[last_end:]
+        remaining = protected[last_end:]
         if remaining.strip():
             elements.extend(self._split_headings(remaining))
+
+        for i, cb in enumerate(code_blocks):
+            for el in elements:
+                if el.get("tag") == "markdown":
+                    el["content"] = el["content"].replace(f"\x00CODE{i}\x00", cb)
+
         return elements or [{"tag": "markdown", "content": content}]
 
     @staticmethod

nanobot/channels/feishu/tests/test_feishu_markdown_rendering.py

@@ -1,7 +1,6 @@
 # Check optional Feishu dependencies before running tests
 try:
-    from nanobot.channels import feishu
+    from nanobot.channels.feishu.runtime import FEISHU_AVAILABLE
-    FEISHU_AVAILABLE = getattr(feishu, "FEISHU_AVAILABLE", False)
 except ImportError:
     FEISHU_AVAILABLE = False
 
@@ -66,3 +65,23 @@ def test_split_headings_keeps_markdown_body_and_code_blocks_intact() -> None:
     assert elements[1]["tag"] == "markdown"
     assert "Body with **bold** text." in elements[1]["content"]
     assert "```python\nprint('hi')\n```" in elements[1]["content"]
+
+
+def test_build_card_elements_keeps_fenced_markdown_tables_intact() -> None:
+    channel = FeishuChannel.__new__(FeishuChannel)
+    text = "Before\n\n```\n| a | b |\n| - | - |\n| 1 | 2 |\n```\n\nAfter"
+
+    elements = channel._build_card_elements(text)
+
+    assert all(el.get("tag") != "table" for el in elements)
+    joined = "\n".join(el["content"] for el in elements if el.get("tag") == "markdown")
+    assert "```\n| a | b |\n| - | - |\n| 1 | 2 |\n```" in joined
+
+
+def test_build_card_elements_still_parses_unfenced_markdown_tables() -> None:
+    channel = FeishuChannel.__new__(FeishuChannel)
+    text = "Before\n\n| a | b |\n| - | - |\n| 1 | 2 |\n\nAfter"
+
+    elements = channel._build_card_elements(text)
+
+    assert any(el.get("tag") == "table" for el in elements)