fix: detect table-embedded images as figure intent in post-filter

api/chat_routes.py

@@ -1285,6 +1285,9 @@ def _filter_images_by_answer(selected_images: List[Dict], answer: str, query: st
     _has_figure_in_answer = any(kw in answer for kw in _FIGURE_ANSWER_KEYWORDS)
     if not _has_figure_in_answer:
         _has_figure_in_answer = bool(re.search(r'[图表]\s*\d+', answer))
+    # 表格内嵌图片检测：回答中出现 [图片] 占位符或 markdown 图片语法
+    if not _has_figure_in_answer:
+        _has_figure_in_answer = bool(re.search(r'\[图片\]|!\[', answer))
     _has_figure_in_query = any(kw in query for kw in _FIGURE_QUERY_KEYWORDS)
     if not _has_figure_in_query:
         _has_figure_in_query = bool(re.search(r'[图表]\s*\d+', query))