feat(web): AI 意图规划置信度阈值与动作策略细化

- workbenchAiIntentPlannerModel 新增 WORKBENCH_AI_INTENT_CONFIDENCE_THRESHOLD 与 isLowConfidenceTravelApplicationPlan，shouldRequestWorkbenchAiIntentPlan 增加业务关键词前置过滤
- resolveExecutableTravelApplicationPlan 区分 requestedSubmit 与提交确认（submitRequiresConfirmation），autoSubmit 不再直接置真
- workbenchIntentActionPolicy 改用 policyDecision 路由（need_confirmation/query_candidates），透传 riskLevel/requiresSelection/requiresConfirmation
- workbenchIntentFrameModel 补充 query 动作识别，usePersonalWorkbenchAiMode/useWorkbenchAiActionRouter/useWorkbenchAiApplicationPreviewFlow 接入低置信度与确认流程
- 更新 intent-planner-model/intent-frame-model/application-gate-model/fast-preview 测试

web/src/composables/workbenchAiMode/usePersonalWorkbenchAiMode.js

@@ -3,11 +3,12 @@ import { useSystemState } from '../useSystemState.js'
 import { useToast } from '../useToast.js'
 import { useWorkbenchComposerDate } from '../useWorkbenchComposerDate.js'
 import { fetchSettings } from '../../services/settings.js'
-import { calculateTravelReimbursement } from '../../services/reimbursements.js'
+import { calculateTravelReimbursement, fetchExpenseClaimDetail } from '../../services/reimbursements.js'
 import { useApplicationPreviewEditor } from '../../views/scripts/useApplicationPreviewEditor.js'
 import {
   deleteAiWorkbenchConversation,
   loadAiWorkbenchConversationHistory,
+  markAiWorkbenchConversationDocumentDeleted,
   saveAiWorkbenchConversation
 } from '../../utils/aiWorkbenchConversationStore.js'
 import { renderAiConversationHtml } from '../../utils/aiConversationHtmlRenderer.js'
@@ -41,6 +42,7 @@ import {
 import { useWorkbenchAiCommandIntents } from './useWorkbenchAiCommandIntents.js'
 import {
   buildRuleFallbackWorkbenchAiIntentPlan,
+  isLowConfidenceTravelApplicationPlan,
   normalizeWorkbenchAiIntentPlan,
   resolveExecutableTravelApplicationPlan,
   shouldRequestWorkbenchAiIntentPlan
@@ -558,6 +560,54 @@ export function usePersonalWorkbenchAiMode(props, emit) {
 
   function renderInlineConversationHtml(content) { return renderAiConversationHtml(content) }
 
+  function isUnavailableDocumentDetailError(error) {
+    const message = String(error?.message || '').trim()
+    return /not\s*found|不存在|已删除|不可访问|无权|forbidden|404/i.test(message)
+  }
+
+  function resolveDocumentDetailLookupClaimId(detailRequest = {}) {
+    return String(detailRequest.claimId || detailRequest.claim_id || '').trim()
+  }
+
+  function markActiveAiDocumentDetailLinkDeleted(detailRequest = {}) {
+    const nextHistory = markAiWorkbenchConversationDocumentDeleted(currentUser.value || {}, {
+      claimId: detailRequest.claimId,
+      claim_id: detailRequest.claimId,
+      claimNo: detailRequest.claimNo,
+      claim_no: detailRequest.claimNo,
+      documentNo: detailRequest.documentNo,
+      document_no: detailRequest.documentNo,
+      id: detailRequest.id
+    })
+    emit('conversation-history-change', nextHistory)
+    const activeConversation = nextHistory.find((item) => (
+      String(item.id || item.conversationId || '').trim() === String(conversationId.value || '').trim()
+    ))
+    if (activeConversation?.messages?.length) {
+      conversationMessages.value = activeConversation.messages.map((message) => normalizeRuntimeMessage(message))
+      scrollInlineConversationToBottom({ force: inlineConversationAutoScrollPinned.value })
+    }
+  }
+
+  async function ensureAiDocumentDetailStillAvailable(detailRequest = {}) {
+    const claimId = resolveDocumentDetailLookupClaimId(detailRequest)
+    if (!claimId) {
+      return true
+    }
+    try {
+      await fetchExpenseClaimDetail(claimId)
+      return true
+    } catch (error) {
+      if (!isUnavailableDocumentDetailError(error)) {
+        console.warn('AI document detail availability check failed, continuing navigation:', error)
+        return true
+      }
+      markActiveAiDocumentDetailLinkDeleted(detailRequest)
+      toast('该单据已经删除或不可访问，已将这条历史入口标记为不可查看。')
+      return false
+    }
+  }
+
   function buildInlinePromptText(rawPrompt, files = []) {
     const prompt = buildWorkbenchPromptText(rawPrompt)
     if (prompt) return prompt
@@ -671,11 +721,70 @@ export function usePersonalWorkbenchAiMode(props, emit) {
         pendingMessageId: plannerPendingMessage?.id,
         ontologyFields: travelApplicationRequest.ontologyFields,
         autoSubmit: travelApplicationRequest.autoSubmit,
-        autoSaveDraft: travelApplicationRequest.autoSaveDraft
+        autoSaveDraft: travelApplicationRequest.autoSaveDraft,
+        requestedSubmit: travelApplicationRequest.requestedSubmit,
+        submitRequiresConfirmation: travelApplicationRequest.submitRequiresConfirmation
       }
     )
   }
 
+  function startModelPlannedTravelApplicationConfirmation(travelApplicationRequest, plan, plannerPendingMessage) {
+    const confirmText = buildLowConfidenceTravelApplicationConfirmationText(travelApplicationRequest, plan)
+    const confirmAction = {
+      label: '确认发起出差申请',
+      description: '根据上面识别到的信息生成出差申请预览。',
+      icon: 'mdi mdi-check-circle-outline',
+      action_type: 'ai_application_confirm_intent',
+      payload: {
+        ontologyFields: travelApplicationRequest.ontologyFields,
+        sourceText: travelApplicationRequest.sourceText,
+        autoSubmit: travelApplicationRequest.autoSubmit,
+        autoSaveDraft: travelApplicationRequest.autoSaveDraft,
+        requestedSubmit: travelApplicationRequest.requestedSubmit,
+        submitRequiresConfirmation: travelApplicationRequest.submitRequiresConfirmation
+      }
+    }
+    replaceInlineMessage(plannerPendingMessage.id, createInlineMessage('assistant', confirmText, {
+      id: plannerPendingMessage.id,
+      suggestedActions: [confirmAction],
+      stewardPlan: {
+        streamStatus: 'completed',
+        thinkingEvents: resolveInlineThinkingEvents(plannerPendingMessage).map((item) => ({ ...item, status: 'completed' }))
+      }
+    }))
+    persistCurrentConversation()
+    scrollInlineConversationToBottom({ force: inlineConversationAutoScrollPinned.value })
+  }
+
+  function buildLowConfidenceTravelApplicationConfirmationText(request, plan) {
+    const fields = request.ontologyFields || {}
+    const summaryParts = []
+    if (fields.time_range) {
+      summaryParts.push(`时间：${fields.time_range}`)
+    }
+    if (fields.location) {
+      summaryParts.push(`地点：${fields.location}`)
+    }
+    if (fields.reason) {
+      summaryParts.push(`事由：${fields.reason}`)
+    }
+    if (fields.transport_mode) {
+      summaryParts.push(`交通：${fields.transport_mode}`)
+    }
+    const summary = summaryParts.length ? `\n\n${summaryParts.join('；')}` : ''
+    const confidenceNote = Number.isFinite(Number(plan?.confidence))
+      ? `（模型识别置信度较低，约 ${Math.round(Number(plan.confidence) * 100)}%）`
+      : '（模型识别置信度较低）'
+    return [
+      '### 需要确认：您是要发起出差申请吗？',
+      '',
+      `小财管家把这句话理解成了“发起差旅申请”${confidenceNote}，为避免误操作，先请您确认。`,
+      summary,
+      '',
+      '点击下方「确认发起出差申请」即可继续；如果理解有误，请补充说明您的实际需求。'
+    ].filter(Boolean).join('\n')
+  }
+
   async function executeModelPlannedWorkbenchIntent(cleanPrompt, entry = {}, files = []) {
     let intentPlan = null
     let modelPlan = null
@@ -703,6 +812,10 @@ export function usePersonalWorkbenchAiMode(props, emit) {
 
     const travelApplicationRequest = resolveExecutableTravelApplicationPlan(intentPlan)
     if (travelApplicationRequest) {
+      if (isLowConfidenceTravelApplicationPlan(intentPlan)) {
+        startModelPlannedTravelApplicationConfirmation(travelApplicationRequest, intentPlan, plannerPendingMessage)
+        return
+      }
       startModelPlannedApplicationPreview(travelApplicationRequest, plannerPendingMessage)
       return
     }
@@ -722,7 +835,7 @@ export function usePersonalWorkbenchAiMode(props, emit) {
     void stewardFlow.requestInlineAssistantReply(cleanPrompt, entry, files, { pendingMessageId: plannerPendingMessage.id })
   }
 
-  function handleAiAnswerMarkdownClick(event) {
+  async function handleAiAnswerMarkdownClick(event) {
     const target = event?.target
     const link = target?.closest?.('a[href^="#ai-open-document-detail:"], a[href^="#ai-open-application-detail:"]')
     if (!link) {
@@ -735,7 +848,11 @@ export function usePersonalWorkbenchAiMode(props, emit) {
     }
     event.preventDefault()
     event.stopPropagation()
-    emit('open-document', buildAiDocumentDetailRequest(detailReference))
+    const detailRequest = buildAiDocumentDetailRequest(detailReference)
+    if (!(await ensureAiDocumentDetailStillAvailable(detailRequest))) {
+      return
+    }
+    emit('open-document', detailRequest)
   }
 
   function startInlineConversation(prompt, entry = {}, files = []) {