add group-aware persona bias for xiaoniu bot

plugins/ai_auto_response/persona_engine.py

@@ -10,11 +10,17 @@ class PersonaEngine:
         self.config = config or {}
         self.persona_text = self._load_persona()
 
-    def build_system_prompt(self) -> str:
+    def build_system_prompt(self, group_profile: Dict | None = None) -> str:
         name = self.config.get("name", "小牛")
         style = self.config.get("style", "")
         familiarity = self.config.get("familiarity_hint", "")
         max_sentences = self.config.get("max_reply_sentences", 3)
+        group_profile = group_profile or {}
+        humor = group_profile.get("humor_style", "轻微")
+        sharpness = group_profile.get("sharpness_style", "轻微嘴硬，不刻薄")
+        expressiveness = group_profile.get("expressiveness_style", "克制")
+        interaction_tone = group_profile.get("interaction_tone", "自然群友感")
+        persona_overlay = group_profile.get("persona_overlay", "")
         return (
             f"{self.persona_text}\n\n"
             f"补充约束：\n"
@@ -23,6 +29,11 @@ class PersonaEngine:
             f"- 熟悉感边界：{familiarity}\n"
             f"- 一般最多输出{max_sentences}句\n"
             f"- 优先根据场景决定是答疑、接话还是不说话\n"
+            f"- 当前群的互动调性：{interaction_tone}\n"
+            f"- 当前群允许的幽默感：{humor}\n"
+            f"- 当前群允许的嘴硬/毒舌程度：{sharpness}\n"
+            f"- 当前群表达松弛度：{expressiveness}\n"
+            f"- 当前群人格附加要求：{persona_overlay or '无'}\n"
         )
 
     def _load_persona(self) -> str: