refactor(server): steward 意图改用声明式注册表编排

- 新增 steward_intent_registry，IntentDescriptor 统一描述意图的识别关键词、动作步骤构建、字段白名单与副作用集合，替代分散的 if/else
- 新增 steward_intent_bootstrap 注册 expense_application 等意图；新增 steward_query_executors 提供差旅标准查询的无副作用执行与城市/席别标签化输出
- action_contracts/action_executor/graph_planner/intent_agent/model_plan_builder/planner_extraction/fallback 适配注册表，识别与执行分发自动从注册表取数
- 新增 intent_registry/query_executors 测试，更新 intent_agent 测试

server/src/app/services/steward_planner_extraction.py

@@ -25,6 +25,44 @@ from app.services.steward_planner_shared import (
 )
 
 
+def _matches_query_signal(compact: str) -> bool:
+    """判断输入是否命中查询类意图信号词(差旅标准等)。
+
+    查询意图不应进入申请/报销候选流程确认,也不应被当作普通业务输入走规则兜底。
+    """
+    from app.services.steward_intent_registry import all_signal_keywords
+
+    query_indicators = ("标准", "补助", "补贴", "差标", "政策", "制度", "多少")
+    if not any(indicator in compact for indicator in query_indicators):
+        return False
+    signal_keywords = all_signal_keywords()
+    return any(keyword in compact for keyword in signal_keywords)
+
+
+def _resolve_assigned_agent_for_draft(task_type: str) -> str:
+    """从注册表取 assigned_agent,查不到时回退到申请/报销默认值。"""
+    from app.services.steward_intent_registry import get_intent
+
+    intent = get_intent(task_type)
+    if intent is not None:
+        return intent.assigned_agent
+    if task_type == "expense_application":
+        return "application_assistant"
+    return "reimbursement_assistant"
+
+
+def _resolve_task_label_for_draft(task_type: str) -> str:
+    """从注册表取意图中文标签,查不到时回退到申请/报销默认值。"""
+    from app.services.steward_intent_registry import get_intent
+
+    intent = get_intent(task_type)
+    if intent is not None:
+        return intent.label
+    if task_type == "expense_application":
+        return "费用申请"
+    return "费用报销"
+
+
 class StewardPlannerExtractionMixin:
     def _has_multiple_financial_demands(self, message: str) -> bool:
         task_drafts = self._extract_task_drafts(message)
@@ -89,6 +127,9 @@ class StewardPlannerExtractionMixin:
         compact = re.sub(r"\s+", "", text)
         if not compact or request.attachments:
             return False
+        # 查询类意图(差旅标准等)不走申请/报销候选流程确认
+        if _matches_query_signal(compact):
+            return False
         if re.search(r"申请|报销|草稿|提交|审批|保存|发起|创建", compact):
             return False
         if not re.search(r"出差|差旅|客户现场|项目|部署|实施|支撑|支持|协助|拜访|调研|培训|会议|驻场|上线|验收", compact):
@@ -115,15 +156,13 @@ class StewardPlannerExtractionMixin:
         base_date: date,
         request: StewardPlanRequest,
     ) -> StewardTask:
+        from app.services.steward_model_plan_builder import StewardModelPlanBuilder
+
         fields = self._extract_ontology_fields(draft.segment, draft.task_type, base_date, request)
         missing_fields = self._resolve_missing_fields(draft.task_type, fields)
-        task_id = f"task_{'app' if draft.task_type == 'expense_application' else 'reim'}_{draft.index:03d}"
-        assigned_agent = (
-            "application_assistant"
-            if draft.task_type == "expense_application"
-            else "reimbursement_assistant"
-        )
-        title_prefix = "费用申请" if draft.task_type == "expense_application" else "费用报销"
+        task_id = StewardModelPlanBuilder._build_task_id(draft.task_type, draft.index)
+        assigned_agent = _resolve_assigned_agent_for_draft(draft.task_type)
+        title_prefix = _resolve_task_label_for_draft(draft.task_type)
         title = self._build_task_title(title_prefix, fields, draft.index)
         return StewardTask(
             task_id=task_id,