feat: 新增预算费控模型与报销审批流引擎

后端新增预算费控服务和报销单审批流模块，引入申请人费用画像
算法，优化知识库 RAG 运行时和同步逻辑，完善报销单工作流常
量和明细同步，更新差旅报销规则电子表格，前端新增预算分析
组件和数字员工模型，完善审批对话框和洞察面板交互，优化侧
边栏和顶栏样式，补充单元测试。

web/tests/requestProgressSteps.test.mjs

@@ -5,10 +5,12 @@ import { mapExpenseClaimToRequest } from '../src/composables/useRequests.js'
 
 const CREATE_APPLICATION = '\u521b\u5efa\u7533\u8bf7'
 const DIRECT_MANAGER_APPROVAL = '\u76f4\u5c5e\u9886\u5bfc\u5ba1\u6279'
+const BUDGET_MANAGER_APPROVAL = '\u9884\u7b97\u7ba1\u7406\u8005\u5ba1\u6279'
 const APPROVAL_COMPLETED = '\u5ba1\u6279\u5b8c\u6210'
 const RETURNED = '\u9000\u56de'
 const WAIT_SUBMIT = '\u5f85\u63d0\u4ea4'
 const WAIT_LEADER_LI_APPROVAL = '\u7b49\u5f85 Leader Li \u6279\u590d'
+const WAIT_BUDGET_ZHAO_APPROVAL = '\u7b49\u5f85 \u8d75\u9884\u7b97 \u6279\u590d'
 const LEADER_RETURNED_STATUS = '\u9886\u5bfc\u5df2\u9000\u56de\uff0c\u5f85\u91cd\u65b0\u63d0\u4ea4'
 
 test('application claims are mapped as application documents', () => {
@@ -41,7 +43,7 @@ test('application claims are mapped as application documents', () => {
   assert.equal(request.expenseTableSummary, '预计金额已随申请提交')
   assert.deepEqual(
     request.progressSteps.map((step) => step.label),
-    [CREATE_APPLICATION, WAIT_LEADER_LI_APPROVAL, APPROVAL_COMPLETED]
+    [CREATE_APPLICATION, WAIT_LEADER_LI_APPROVAL, BUDGET_MANAGER_APPROVAL, APPROVAL_COMPLETED]
   )
   assert.equal(request.progressSteps.some((step) => step.label === 'AI预审'), false)
   assert.equal(request.progressSteps.some((step) => step.label === '财务审批'), false)
@@ -50,6 +52,47 @@ test('application claims are mapped as application documents', () => {
   assert.equal(request.progressSteps.find((step) => step.label === WAIT_LEADER_LI_APPROVAL)?.current, true)
 })
 
+test('application claims wait for department P8 budget monitor after leader approval', () => {
+  const request = mapExpenseClaimToRequest({
+    id: 'claim-application-budget',
+    claim_no: 'AP-20260525103145-BUDGET',
+    employee_name: '张三',
+    department_name: '交付部',
+    manager_name: 'Leader Li',
+    expense_type: 'travel_application',
+    reason: '支撑国网服务器上线部署',
+    location: '上海',
+    amount: 12000,
+    invoice_count: 0,
+    occurred_at: '2026-05-25T00:00:00.000Z',
+    submitted_at: '2026-05-25T02:00:00.000Z',
+    created_at: '2026-05-25T01:30:00.000Z',
+    updated_at: '2026-05-25T03:00:00.000Z',
+    status: 'submitted',
+    approval_stage: BUDGET_MANAGER_APPROVAL,
+    risk_flags_json: [
+      {
+        source: 'manual_approval',
+        event_type: 'expense_application_approval',
+        operator: 'Leader Li',
+        previous_approval_stage: DIRECT_MANAGER_APPROVAL,
+        next_approval_stage: BUDGET_MANAGER_APPROVAL,
+        next_approver_name: '赵预算',
+        next_approver_grade: 'P8',
+        created_at: '2026-05-25T03:00:00.000Z'
+      }
+    ],
+    items: []
+  })
+
+  assert.deepEqual(
+    request.progressSteps.map((step) => step.label),
+    [CREATE_APPLICATION, DIRECT_MANAGER_APPROVAL, WAIT_BUDGET_ZHAO_APPROVAL, APPROVAL_COMPLETED]
+  )
+  assert.equal(request.progressSteps.find((step) => step.label === WAIT_BUDGET_ZHAO_APPROVAL)?.current, true)
+  assert.equal(request.progressSteps.find((step) => step.label === DIRECT_MANAGER_APPROVAL)?.time, 'Leader Li通过')
+})
+
 test('returned application claims include leader return node and supplement status', () => {
   const request = mapExpenseClaimToRequest({
     id: 'claim-application-returned',
@@ -86,7 +129,7 @@ test('returned application claims include leader return node and supplement stat
 
   assert.deepEqual(
     request.progressSteps.map((step) => step.label),
-    [CREATE_APPLICATION, WAIT_LEADER_LI_APPROVAL, RETURNED, WAIT_SUBMIT]
+    [CREATE_APPLICATION, DIRECT_MANAGER_APPROVAL, RETURNED, WAIT_SUBMIT]
   )
   assert.equal(request.progressSteps.find((step) => step.label === RETURNED)?.time, 'Leader Li\u9000\u56de')
   assert.match(request.progressSteps.find((step) => step.label === RETURNED)?.detail, /2026-05-25/)
@@ -96,7 +139,7 @@ test('returned application claims include leader return node and supplement stat
   assert.equal(request.progressSteps.some((step) => step.label === APPROVAL_COMPLETED), false)
 })
 
-test('approved application claims complete after direct manager approval only', () => {
+test('approved application claims complete after budget approval', () => {
   const request = mapExpenseClaimToRequest({
     id: 'claim-application-approved',
     claim_no: 'AP-20260525113045-HGFEDCBA',
@@ -120,6 +163,16 @@ test('approved application claims complete after direct manager approval only',
         event_type: 'expense_application_approval',
         operator: '李经理',
         previous_approval_stage: '直属领导审批',
+        next_approval_stage: '预算管理者审批',
+        next_approver_name: '赵预算',
+        next_approver_grade: 'P8',
+        created_at: '2026-05-25T03:00:00.000Z'
+      },
+      {
+        source: 'budget_approval',
+        event_type: 'expense_application_budget_approval',
+        operator: '赵预算',
+        previous_approval_stage: '预算管理者审批',
         next_approval_stage: '审批完成',
         created_at: '2026-05-25T03:00:00.000Z'
       }
@@ -131,10 +184,11 @@ test('approved application claims complete after direct manager approval only',
   assert.equal(request.workflowNode, '审批完成')
   assert.deepEqual(
     request.progressSteps.map((step) => step.label),
-    ['创建申请', '直属领导审批', '审批完成']
+    ['创建申请', '直属领导审批', '预算管理者审批', '审批完成']
   )
   assert.equal(request.progressSteps.every((step) => step.done), true)
   assert.equal(request.progressSteps.find((step) => step.label === '直属领导审批')?.time, '李经理通过')
+  assert.equal(request.progressSteps.find((step) => step.label === '预算管理者审批')?.time, '赵预算通过')
 })
 
 test('progress steps show approval operator time and current stay duration', () => {