refactor: extract text risk detectors from pydantic agent

core/risk_text_helpers.py

@@ -0,0 +1,71 @@
+from __future__ import annotations
+
+import re
+
+
+def is_political_inquiry(text: str) -> bool:
+    """文本前置风控：政治人物/政治事件/政治图片相关询问一律拒绝。"""
+    s = (text or "").strip().lower()
+    if not s:
+        return False
+    kw = (
+        "政治",
+        "涉政",
+        "党政",
+        "政治人物",
+        "政治事件",
+        "政治图片",
+        "政治海报",
+        "政治宣传",
+        "领导人",
+        "伟人",
+        "元帅",
+        "将军",
+        "红色人物",
+        "党史",
+        "天安门",
+        "人民大会堂",
+        "中南海",
+        "习近平",
+        "毛泽东",
+        "邓小平",
+        "江泽民",
+        "胡锦涛",
+        "李克强",
+        "周恩来",
+        "特朗普",
+        "拜登",
+        "普京",
+        "泽连斯基",
+        "trump",
+        "biden",
+        "putin",
+        "zelensky",
+        "xi jinping",
+    )
+    if any(k in s for k in kw):
+        return True
+    return bool(re.search(r"(元帅|将军|领导人|政治人物|政治事件).*(照片|图片|头像|原图)?", s))
+
+
+def is_map_inquiry(text: str) -> bool:
+    """地图类需求一律拒绝（按业务规则）。"""
+    s = (text or "").strip().lower()
+    if not s:
+        return False
+    kw = (
+        "地图",
+        "地形图",
+        "行政区划图",
+        "世界地图",
+        "中国地图",
+        "卫星地图",
+        "导航图",
+        "航海图",
+        "作战地图",
+        "军事地图",
+        "map",
+        "topographic map",
+        "satellite map",
+    )
+    return any(k in s for k in kw)