feat(web): AI 工作台多 task 串行推进与会话适配

- useWorkbenchAiApplicationPreviewFlow/useWorkbenchAiActionRouter/useWorkbenchAiCommandIntents 支持 task1 完成后自动推进 task2，确认按钮直接拉起申请预览，草稿/提交成功后继续推进下一 task
- workbenchAiIntentPlannerModel/workbenchAiMessageModel/workbenchAiCommandIntentModel 适配多 task 意图规划与消息结构
- aiApplicationPreviewActions/aiApplicationPrecheckModel/aiExpenseDraftModel/aiWorkbenchConversationStore 草稿与会话存储适配
- PersonalWorkbenchAiMode 与样式适配，更新 preview-actions/expense-draft/conversation-store/fast-preview/action-router/command-intent/intent-planner 测试

web/tests/workbench-ai-action-router.test.mjs

@@ -93,6 +93,65 @@ test('workbench steward application confirmation opens inline application previe
   assert.equal(preview.fields.transportMode, '')
 })
 
+test('workbench low-confidence application confirmation forwards remaining tasks', () => {
+  let previewCall = null
+  const remainingTasks = [{
+    task_id: 'task-reimbursement-2',
+    task_type: 'reimbursement',
+    assigned_agent: 'reimbursement_assistant',
+    ontology_fields: {
+      expense_type: 'entertainment',
+      expense_type_label: '业务招待费',
+      amount: '2000元',
+      time_range: '2026-06-25',
+      reason: '业务招待'
+    }
+  }]
+  const router = useWorkbenchAiActionRouter({
+    aiExpenseDraft: { value: null },
+    applicationFlow: {
+      isInlineSuggestedActionDisabled: () => false,
+      executeInlineApplicationPreviewAction: () => {},
+      startAiApplicationPreview: (...args) => {
+        previewCall = args
+      }
+    },
+    assistantDraft: { value: '' },
+    attachmentFlow: {
+      confirmAiAttachmentAssociation: () => {}
+    },
+    emit: () => {},
+    expenseFlow: {
+      linkAiExpenseApplication: () => {},
+      pushInlineExpenseSceneSelectionPrompt: () => {},
+      startAiApplicationPreviewFromAction: () => {},
+      startAiExpenseDraft: () => {}
+    },
+    focusAiModeInput: () => {},
+    hasInlineAttachmentOcrDetails: () => false,
+    resolveLatestInlineUserPrompt: () => '',
+    selectedFiles: { value: [] },
+    startInlineConversation: () => {},
+    toast: () => {},
+    toggleInlineAttachmentOcrDetails: () => {}
+  })
+
+  router.handleInlineSuggestedAction({
+    label: '确认发起出差申请',
+    action_type: 'ai_application_confirm_intent',
+    payload: {
+      sourceText: '2月20-23日去上海出差3天，服务国网服务器部署，并且报销昨天的业务招待费2000元',
+      ontologyFields: { location: '上海', reason: '服务国网服务器部署' },
+      stewardRemainingTasks: remainingTasks
+    }
+  })
+
+  assert.ok(previewCall, 'startAiApplicationPreview 应被调用')
+  assert.deepEqual(previewCall[3].stewardRemainingTasks, remainingTasks)
+  assert.equal(typeof previewCall[3].onPreviewReadyForNextTask, 'function')
+  assert.equal(typeof previewCall[3].onApplicationActionCompleted, 'function')
+})
+
 test('workbench reimbursement skip link action opens new reimbursement flow', () => {
   let sceneSelectionPayload = null
   let fallbackConversationStarted = false
@@ -389,3 +448,70 @@ test('workbench steward executable submit action runs precheck before submit and
     globalThis.fetch = originalFetch
   }
 })
+
+test('workbench steward continue-next-task reimbursement prefills ontology and forwards remaining tasks', () => {
+  let expenseDraftCall = null
+  const router = useWorkbenchAiActionRouter({
+    aiExpenseDraft: { value: null },
+    applicationFlow: {
+      isInlineSuggestedActionDisabled: () => false,
+      executeInlineApplicationPreviewAction: () => {}
+    },
+    assistantDraft: { value: '' },
+    attachmentFlow: {
+      confirmAiAttachmentAssociation: () => {}
+    },
+    emit: () => {},
+    expenseFlow: {
+      linkAiExpenseApplication: () => {},
+      promptAiReimbursementDraftContinuation: () => {},
+      promptStandaloneReimbursementDraftCreation: () => {},
+      pushInlineExpenseSceneSelectionPrompt: () => {},
+      startAiApplicationPreviewFromAction: () => {},
+      startAiExpenseDraft: (expenseType, expenseTypeLabel, requiresApplicationBeforeReimbursement, options) => {
+        expenseDraftCall = { expenseType, expenseTypeLabel, requiresApplicationBeforeReimbursement, options }
+      },
+      startAiReimbursementAssociationGate: () => {}
+    },
+    focusAiModeInput: () => {},
+    hasInlineAttachmentOcrDetails: () => false,
+    resolveLatestInlineUserPrompt: () => '',
+    selectedFiles: { value: [] },
+    startInlineConversation: () => {},
+    toast: () => {},
+    toggleInlineAttachmentOcrDetails: () => {}
+  })
+
+  router.handleInlineSuggestedAction({
+    label: '继续处理费用报销',
+    action_type: 'steward_continue_next_task',
+    payload: {
+      steward_confirm_flow: true,
+      flow_id: 'travel_reimbursement',
+      steward_current_task: {
+        task_id: 'task-meal-1',
+        task_type: 'reimbursement',
+        title: '业务招待费报销',
+        summary: '报销昨天业务招待费2000元',
+        ontology_fields: {
+          expense_type: 'meal',
+          expense_type_label: '业务招待费',
+          amount: '2000元',
+          time_range: '昨天',
+          reason: '客户招待'
+        }
+      },
+      steward_remaining_tasks: []
+    }
+  })
+
+  // task2(招待费报销)启动时:费用类型正确、语义预填到草稿、remaining tasks 透传
+  assert.ok(expenseDraftCall, 'startAiExpenseDraft 应被调用')
+  assert.equal(expenseDraftCall.expenseType, 'meal')
+  assert.equal(expenseDraftCall.expenseTypeLabel, '业务招待费')
+  assert.equal(expenseDraftCall.requiresApplicationBeforeReimbursement, true)
+  assert.equal(expenseDraftCall.options.prefillValues.amount, '2000元')
+  assert.equal(expenseDraftCall.options.prefillValues.reason, '客户招待')
+  assert.equal(expenseDraftCall.options.prefillValues.time_range, '昨天')
+  assert.deepEqual(expenseDraftCall.options.stewardRemainingTasks, [])
+})