fix(ai): recognize conversational document filters

web/tests/travel-reimbursement-guided-flow.test.mjs

@@ -181,6 +181,14 @@ test('assistant session scope guard keeps business boundaries isolated', () => {
     resolveAssistantScopeGuard('帮我查询待我审核的单据', SESSION_TYPE_EXPENSE).targetSessionType,
     SESSION_TYPE_APPROVAL
   )
+  assert.equal(
+    resolveAssistantScopeGuard('出差上海的单据请筛选一下', SESSION_TYPE_EXPENSE),
+    null
+  )
+  assert.equal(
+    resolveAssistantScopeGuard('出差上海的单据请筛选一下', SESSION_TYPE_APPLICATION).targetSessionType,
+    SESSION_TYPE_EXPENSE
+  )
   assert.equal(
     resolveAssistantScopeGuard('差旅住宿标准是多少', SESSION_TYPE_EXPENSE).targetSessionType,
     SESSION_TYPE_KNOWLEDGE
@@ -414,6 +422,7 @@ test('guided reimbursement interrupts suspicious questions before expensive flow
   const state = selectGuidedExpenseType(createGuidedReimbursementState(), 'transport')
   assert.equal(shouldConfirmGuidedInterruption('送客户去机场', state), false)
   assert.equal(shouldConfirmGuidedInterruption('帮我查询一下上周的报销状态？', state), true)
+  assert.equal(shouldConfirmGuidedInterruption('出差上海的单据请筛选一下', state), true)
   assert.deepEqual(
     buildGuidedInterruptionActions().map((action) => action.action_type),
     [GUIDED_ACTION_CONTINUE_FILLING, GUIDED_ACTION_PROCESS_INTERRUPTION]