fix/ 修复AI聊天时回复markdown导致聊天气泡布局问题

api/tests/test_reply_segments.py

@@ -3,6 +3,7 @@
 from app.agents.chat.reply_limits import (
     nonempty_segments_or_fallback,
     segments_from_llm_response,
+    strip_markdown_for_chat,
 )
 
 
@@ -23,3 +24,20 @@ def test_short_paragraphs_not_split():
 
 def test_nonempty_fallback_when_all_blank():
     assert nonempty_segments_or_fallback(["", "  "], fallback="ok") == ["ok"]
+
+
+def test_split_marker_strips_markdown():
+    assert segments_from_llm_response("**A**[SPLIT]_B_", max_segments=3) == ["A", "B"]
+
+
+def test_paragraph_split_strips_markdown():
+    a = "**太为你高兴了！在上海大剧院的舞台绽放，聚光灯下的你。**"
+    b = "[详情](https://e.com)说到舞台，我忽然想起你黄浦江边的童年。"
+    assert segments_from_llm_response(f"{a}\n\n{b}", max_segments=3) == [
+        "太为你高兴了！在上海大剧院的舞台绽放，聚光灯下的你。",
+        "详情说到舞台，我忽然想起你黄浦江边的童年。",
+    ]
+
+
+def test_strip_markdown_for_chat_preserves_split_token():
+    assert "[SPLIT]" in strip_markdown_for_chat("a **b** [SPLIT] c")