Refine travel reimbursement steward flow

Align planner, runtime rules, and policy assets so travel guidance
matches the updated reimbursement workflow.

web/src/utils/assistantSessionScope.js

@@ -52,6 +52,10 @@ const APPLICATION_FUTURE_OR_DURATION_PATTERN =
   /明天|后天|下周|下月|近期|月底|预计|计划|安排|准备|将要|[0-9]+天|[一二两三四五六七八九十]+天/
 const APPLICATION_ROUTE_PATTERN =
   /(?:去|到|赴|前往)[^，,。；;！？?!\n]{0,24}(?: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)|(?:出差|差旅)[^，,。；;！？?!\n]{0,24}(?:[0-9]+天|[一二两三四五六七八九十]+天|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)/
+const AMBIGUOUS_TRAVEL_DATE_RANGE_PATTERN =
+  /(?:\d{1,2}月)?\d{1,2}(?:日|号)?(?:-|—|~|～|至|到)\d{1,2}(?:日|号)?[^，,。；;！？?!\n]{0,32}(?: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)/
+const EXPLICIT_APPLICATION_ACTION_PATTERN =
+  /费用申请|发起申请|申请单|事前申请|事前审批|前置审批|出差申请|申请出差|差旅申请|申请差旅|采购申请|用款申请|预算申请|先申请|补办申请|补申请|补办出差申请|创建申请|提交申请/
 const COMPLETED_EXPENSE_PATTERN =
   /已经|已|昨天|前天|上周|上月|去年|花了|花销|消费|垫付|支付|付了|买了|采购了|招待了|发生了/
 const EXPENSE_PATTERN =
@@ -141,6 +145,21 @@ export function hasExpenseApplicationIntentSignal(rawText) {
   return hasBusinessSignal && planningScore + timingScore + routeScore >= 2
 }
 
+export function hasAmbiguousTravelFlowIntent(rawText) {
+  const text = normalizeText(rawText)
+  if (!text) {
+    return false
+  }
+  if (
+    EXPLICIT_APPLICATION_ACTION_PATTERN.test(text) ||
+    EXPENSE_PATTERN.test(text) ||
+    KNOWLEDGE_PATTERN.test(text)
+  ) {
+    return false
+  }
+  return AMBIGUOUS_TRAVEL_DATE_RANGE_PATTERN.test(text)
+}
+
 function resolveScopeConfig(sessionType) {
   return SESSION_SCOPE_CONFIG[normalizeSessionType(sessionType)] || SESSION_SCOPE_CONFIG[ASSISTANT_SCOPE_SESSION_EXPENSE]
 }
@@ -151,6 +170,10 @@ export function inferAssistantScopeTarget(rawText, options = {}) {
     return ''
   }
 
+  if (hasAmbiguousTravelFlowIntent(text)) {
+    return ASSISTANT_SCOPE_SESSION_STEWARD
+  }
+
   const applicationMatched = hasExpenseApplicationIntentSignal(text)
   const expenseMatched = EXPENSE_PATTERN.test(text)
   const approvalMatched = APPROVAL_PATTERN.test(text)

web/src/utils/workbenchAssistantIntent.js

@@ -3,6 +3,7 @@ import {
   ASSISTANT_SCOPE_SESSION_EXPENSE,
   ASSISTANT_SCOPE_SESSION_KNOWLEDGE,
   ASSISTANT_SCOPE_SESSION_STEWARD,
+  hasAmbiguousTravelFlowIntent,
   hasExpenseApplicationIntentSignal,
   hasReimbursementIntentSignal,
   inferAssistantScopeTarget
@@ -64,6 +65,10 @@ export function resolveWorkbenchSessionTypeFromOntology(ontology, rawText, fallb
     return fallback
   }
 
+  if (hasAmbiguousTravelFlowIntent(text)) {
+    return ASSISTANT_SCOPE_SESSION_STEWARD
+  }
+
   if (applicationSignal && reimbursementSignal) {
     return ASSISTANT_SCOPE_SESSION_STEWARD
   }