优化自动回复触发逻辑：疑问句默认仅@机器人时触发

变更项：

1. 在 triggers 中新增 question_requires_at 配置，默认要求@机器人才将疑问句升级为 question_trigger。

2. 在 response_planner 中收紧问答兜底策略，疑问句仅在 directed 场景进入模型。

3. 在 config.toml 增加 priority.question_requires_at=true，避免群聊普通疑问句高频误触发。

plugins/ai_auto_response/config.toml

@@ -86,6 +86,7 @@ recent_followup_window_minutes = 5
 [priority]
 at_bot = 1.0
 explicit_question = 0.95
+question_requires_at = true
 followup = 0.90
 social_call = 0.65
 light_social = 0.45

plugins/ai_auto_response/core/response_planner.py

@@ -35,7 +35,10 @@ class ResponsePlanner:
         if trigger.get("is_question") and conversation_hints.get("has_recent_human_solver") and flow_state == "idle":
             return False
         if trigger.get("is_question"):
-            return directed or trigger.get("priority", 0) >= 0.9 or flow_state in {"warming", "engaged", "deep_engaged"}
+            # 策略收敛：
+            # 问答类回复只在“明确指向机器人”时触发，防止把群友之间的疑问句当作对机器人提问。
+            # 这层作为兜底，即使上游触发器未来被调整，也不会回到“疑问句高频抢答”的状态。
+            return directed
         if trigger.get("is_followup"):
             if directed:
                 return True

plugins/ai_auto_response/core/triggers.py

@@ -34,6 +34,11 @@ class TriggerRouter:
     def __init__(self, config: Dict):
         self.config = config or {}
         self.topic_keywords = [str(item).lower() for item in self.config.get("focus", [])]
+        # 业务约束说明：
+        # 1) 群内大量“疑问句”其实是群友之间的随口沟通，不是向机器人求助；
+        # 2) 如果把所有疑问句都当成问答触发，会显著提升误触发率，导致“高频答非所问”；
+        # 3) 因此默认要求“必须@机器人”才把疑问句升级为咨询触发，避免抢话。
+        self.question_requires_at = bool(self.config.get("question_requires_at", True))
 
     def route(self, message: Dict, memory_hints: Dict, conversation_hints: Dict | None = None) -> TriggerResult:
         conversation_hints = conversation_hints or {}
@@ -47,11 +52,17 @@ class TriggerRouter:
             result.is_directed = True
             result.reasons.append("is_at")
         if self._is_question(content):
-            if result.priority < float(self.config.get("explicit_question", 0.95)):
-                result.trigger_type = "question_trigger"
-                result.priority = float(self.config.get("explicit_question", 0.95))
-            result.is_question = True
-            result.reasons.append("question")
+            # 这里把“是否是疑问句”和“是否应该按咨询触发”拆开处理：
+            # - 疑问句形态用于日志观察；
+            # - 触发升级只在满足定向条件时才生效，避免群聊里普通问句频繁触发机器人。
+            if self.question_requires_at and not message.get("is_at"):
+                result.reasons.append("question_detected_but_not_at")
+            else:
+                if result.priority < float(self.config.get("explicit_question", 0.95)):
+                    result.trigger_type = "question_trigger"
+                    result.priority = float(self.config.get("explicit_question", 0.95))
+                result.is_question = True
+                result.reasons.append("question")
         if memory_hints.get("is_followup"):
             if result.priority < float(self.config.get("followup", 0.90)):
                 result.trigger_type = "followup_trigger"