feat: 新增预算助手报告组件并优化报销交互细节

新增预算助手报告视图模型和组件，优化报销洞察面板和消息项
样式细节，完善预算中心页面布局和文档中心视图，增强报销创
建会话管理和提交编排器，调整 Vite 构建配置，补充单元测试。

web/src/views/scripts/travelReimbursementConversationModel.js

@@ -2,7 +2,7 @@ import { buildSuggestedActionKey } from '../../utils/suggestedActionKey.js'
 import { normalizeExpenseQueryPayload } from './travelReimbursementExpenseQueryModel.js'
 import { buildAgentInsight, buildReviewFilePreviewsFromReviewPayload } from './travelReimbursementAttachmentModel.js'
 import { resolveExpenseTypeLabel } from './travelReimbursementReviewModel.js'
-import { isBudgetMonitorUser, isExecutiveUser } from '../../utils/accessControl.js'
+import { isBudgetMonitorUser, isExecutiveUser, isPlatformAdminUser } from '../../utils/accessControl.js'
 import {
   GUIDED_ACTION_OPEN_TRAVEL_CALCULATOR,
   GUIDED_ACTION_START_APPLICATION,
@@ -58,7 +58,7 @@ export const ASSISTANT_SESSION_MODE_OPTIONS = [
 ]
 
 export function canUseBudgetAssistantSession(user = null) {
-  return Boolean(isBudgetMonitorUser(user) || isExecutiveUser(user))
+  return Boolean(isPlatformAdminUser(user) || isBudgetMonitorUser(user) || isExecutiveUser(user))
 }
 
 function canUseAssistantSessionType(sessionType, user = null) {
@@ -102,6 +102,7 @@ export const SOURCE_LABELS = {
   workbench: '来自个人工作台',
   topbar: '来自发起报销',
   application: '来自发起申请',
+  budget: '来自预算中心',
   detail: '来自智能录入',
   upload: '来自附件上传',
   requests: '来自报销列表'
@@ -111,6 +112,7 @@ export const SCENARIO_LABELS = {
   expense: '报销',
   accounts_receivable: '应收',
   accounts_payable: '应付',
+  budget: '预算',
   knowledge: '知识',
   unknown: '通用'
 }
@@ -230,6 +232,24 @@ export const APPROVAL_WELCOME_QUICK_ACTIONS = [
   }
 ]
 
+export const BUDGET_WELCOME_QUICK_ACTIONS = [
+  {
+    label: '预算编制查询',
+    prompt: '帮我查询当前部门本季度预算编制情况，重点看差旅、通信、招待费和办公用品。',
+    icon: 'mdi mdi-calculator-variant-outline'
+  },
+  {
+    label: '阈值风险检查',
+    prompt: '帮我检查当前预算的提醒阈值、告警阈值和风险阈值设置是否合理，并指出需要关注的费用类型。',
+    icon: 'mdi mdi-alert-decagram-outline'
+  },
+  {
+    label: '预算调整建议',
+    prompt: '请根据已发生、已占用和剩余预算，帮我整理下一轮预算调整建议。',
+    icon: 'mdi mdi-chart-box-plus-outline'
+  }
+]
+
 export const HOT_KNOWLEDGE_QUESTIONS = [
   '差旅住宿标准按什么规则执行？',
   '酒店超标后如何申请例外报销？',
@@ -287,6 +307,7 @@ export function createMessage(role, text, attachments = [], extras = {}) {
     riskFlags: [],
     pendingAttachmentAssociation: null,
     applicationPreview: null,
+    budgetReport: null,
     ...extras
   }
 }
@@ -557,6 +578,10 @@ export function buildWelcomeQuickActions(sessionType, user, entrySource, linkedR
     return APPROVAL_WELCOME_QUICK_ACTIONS
   }
 
+  if (normalizedSessionType === SESSION_TYPE_BUDGET) {
+    return BUDGET_WELCOME_QUICK_ACTIONS
+  }
+
   return EXPENSE_WELCOME_QUICK_ACTIONS
 }
 
@@ -601,6 +626,18 @@ export function buildWelcomeMessage(entrySource, linkedRequest, sessionType = SE
     ].join('\n')
   }
 
+  if (normalizedSessionType === SESSION_TYPE_BUDGET) {
+    return [
+      `${greeting}！今日是 **${ctx.dateLine}**。`,
+      '',
+      '**欢迎来到个人财务中心 · 预算编制助手。** 我可以帮您查询预算编制情况、整理费用类型预算、检查提醒/告警/风险阈值，并保持预算对话独立记录。',
+      '',
+      '业务范围：预算编制查询、部门预算检查、费用类型额度梳理、预算占用说明和阈值风险分析。报销发起、审核动作和制度问答请切换到对应助手。',
+      '',
+      '您可以直接输入预算问题，或点击下方快捷操作快速开始。'
+    ].join('\n')
+  }
+
   if (entrySource === 'detail' && linkedRequest?.id) {
     return [
       `${greeting}！今日是 **${ctx.dateLine}**。`,
@@ -659,6 +696,17 @@ export function buildWelcomeInsight(entrySource, linkedRequest, sessionType = SE
     }
   }
 
+  if (normalizedSessionType === SESSION_TYPE_BUDGET) {
+    return {
+      intent: 'welcome',
+      metricLabel: '当前助手',
+      metricValue: '预算编制助手',
+      title: '预算编制助手',
+      summary: `${ctx.honorific}，这里会单独保存预算相关对话，适合查询预算编制、预算占用和阈值风险。`,
+      agent: null
+    }
+  }
+
   return {
     intent: 'welcome',
     metricLabel: '当前助手',
@@ -837,6 +885,7 @@ export function serializeSessionMessages(messages) {
     riskFlags: Array.isArray(message.riskFlags) ? message.riskFlags : [],
     pendingAttachmentAssociation: message.pendingAttachmentAssociation || null,
     applicationPreview: message.applicationPreview || null,
+    budgetReport: message.budgetReport || null,
     assistantName: message.assistantName || '',
     isWelcome: Boolean(message.isWelcome),
     welcomeQuickActions: Array.isArray(message.welcomeQuickActions) ? message.welcomeQuickActions : []
@@ -857,6 +906,7 @@ export function hasMeaningfulSessionMessages(messages) {
         || message.reviewPayload
         || message.queryPayload
         || message.draftPayload
+        || message.budgetReport
     )
   })
 }