feat：意图识别优化

app/config.py

@@ -40,9 +40,17 @@ class Settings:
         default_factory=lambda: int(os.getenv("TYPESAFE_MAX_RETRIES", "2"))
     )
 
-    # 意图门控使用 Jev confidence，阈值需按真实语料校准
-    intent_min_confidence: float = field(
-        default_factory=lambda: float(os.getenv("INTENT_MIN_CONFIDENCE", "0.7"))
+    # 意图门控使用选中项自身的概率，阈值需按真实语料校准
+    # 新建、修改会改动大屏，阈值较严；问答判错代价低，阈值较宽
+    intent_min_probability: float = field(
+        default_factory=lambda: float(os.getenv("INTENT_MIN_PROBABILITY", "0.7"))
+    )
+    intent_qa_min_probability: float = field(
+        default_factory=lambda: float(os.getenv("INTENT_QA_MIN_PROBABILITY", "0.5"))
+    )
+    # 同一问题最多澄清的轮数，用尽后不再追问
+    intent_max_clarify_rounds: int = field(
+        default_factory=lambda: int(os.getenv("INTENT_MAX_CLARIFY_ROUNDS", "1"))
     )
 
     # 动作自动修正次数，不含首次生成，0 表示不重试，与用户澄清轮数无关
@@ -80,8 +88,12 @@ class Settings:
             raise ValueError("CONVERSATION_HISTORY_TURNS 必须是非负整数")
         if type(self.max_action_retries) is not int or self.max_action_retries < 0:
             raise ValueError("MAX_ACTION_RETRIES 必须是非负整数")
-        if not 0 <= self.intent_min_confidence <= 1:
-            raise ValueError("INTENT_MIN_CONFIDENCE 必须在 0 到 1 之间")
+        if not 0 <= self.intent_min_probability <= 1:
+            raise ValueError("INTENT_MIN_PROBABILITY 必须在 0 到 1 之间")
+        if not 0 <= self.intent_qa_min_probability <= 1:
+            raise ValueError("INTENT_QA_MIN_PROBABILITY 必须在 0 到 1 之间")
+        if self.intent_max_clarify_rounds < 0:
+            raise ValueError("INTENT_MAX_CLARIFY_ROUNDS 必须是非负整数")
 
 
 settings = Settings()