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/components/travel/BudgetAssistantReport.vue

@@ -0,0 +1,452 @@
+<template>
+  <section class="budget-assistant-report" aria-label="预算编制分析报告">
+    <header class="budget-report-head">
+      <div>
+        <span class="budget-report-kicker">{{ report.basePeriod }} → {{ report.targetPeriod }}</span>
+        <h3>{{ report.title }}</h3>
+        <p>{{ report.departmentName }} · {{ report.subtitle }}</p>
+      </div>
+      <span class="budget-report-badge">
+        <i class="mdi mdi-chart-donut"></i>
+        分析报告
+      </span>
+    </header>
+
+    <div class="budget-report-summary-grid">
+      <article
+        v-for="(metric, index) in summaryCards"
+        :key="metric.label"
+        class="budget-report-summary-card"
+        :style="{ '--delay': `${index * 55}ms`, '--accent': metric.color }"
+      >
+        <span>{{ metric.label }}</span>
+        <strong>{{ metric.value }}</strong>
+        <small>{{ metric.hint }}</small>
+      </article>
+    </div>
+
+    <section class="budget-report-main">
+      <article class="budget-report-chart-panel">
+        <div class="budget-report-section-head">
+          <strong>上季度费用结构</strong>
+          <span>{{ report.centerLabel }}</span>
+        </div>
+        <DonutChart
+          :items="report.items"
+          :center-value="report.centerValue"
+          :center-label="report.centerLabel"
+        />
+      </article>
+
+      <article class="budget-report-macro-panel">
+        <div class="budget-report-section-head">
+          <strong>总体判断</strong>
+          <span>宏观分析</span>
+        </div>
+        <ol class="budget-report-insight-list">
+          <li v-for="item in report.macroInsights" :key="item">{{ item }}</li>
+        </ol>
+      </article>
+    </section>
+
+    <section class="budget-report-detail-panel">
+      <div class="budget-report-section-head">
+        <strong>费用类型拆解</strong>
+        <span>用于编制下一季度预算</span>
+      </div>
+      <div class="budget-report-expense-list">
+        <article
+          v-for="(item, index) in report.items"
+          :key="item.key"
+          class="budget-report-expense-card"
+          :style="{ '--accent': item.color, '--delay': `${index * 70}ms` }"
+        >
+          <header>
+            <span class="budget-report-dot"></span>
+            <strong>{{ item.name }}</strong>
+            <em :class="item.trendTone">{{ item.trend }}</em>
+          </header>
+          <div class="budget-report-expense-stats">
+            <span>开销 {{ item.amountDisplay }}</span>
+            <span>占比 {{ item.share }}</span>
+            <span>建议 {{ item.recommendedDisplay }}</span>
+          </div>
+          <p>{{ item.risk }}</p>
+          <ul>
+            <li v-for="driver in item.drivers" :key="driver">{{ driver }}</li>
+          </ul>
+          <footer>{{ item.suggestion }}</footer>
+        </article>
+      </div>
+    </section>
+
+    <section class="budget-report-action-panel">
+      <div>
+        <strong>编制建议</strong>
+        <p v-for="item in report.recommendations" :key="item">{{ item }}</p>
+      </div>
+      <span>{{ report.generatedAt }}</span>
+    </section>
+  </section>
+</template>
+
+<script setup>
+import { computed } from 'vue'
+
+import DonutChart from '../charts/DonutChart.vue'
+
+const props = defineProps({
+  report: {
+    type: Object,
+    required: true
+  }
+})
+
+const summaryCards = computed(() => [
+  {
+    label: '上季度预算',
+    value: props.report.summary?.totalBudget || '—',
+    hint: '作为编制基准',
+    color: 'var(--theme-primary)'
+  },
+  {
+    label: '上季度开销',
+    value: props.report.summary?.totalSpend || '—',
+    hint: '按四类预算口径汇总',
+    color: 'var(--chart-blue)'
+  },
+  {
+    label: '预算使用率',
+    value: props.report.summary?.usageRate || '—',
+    hint: '未触达风险线',
+    color: 'var(--chart-amber)'
+  },
+  {
+    label: '建议编制额',
+    value: props.report.summary?.recommendedTotal || '—',
+    hint: '含业务增长预留',
+    color: 'var(--chart-purple)'
+  }
+])
+</script>
+
+<style scoped>
+.budget-assistant-report {
+  display: grid;
+  gap: 12px;
+  margin-top: 12px;
+  color: #1f2937;
+  animation: budgetReportIn 420ms var(--ease, ease) both;
+}
+
+.budget-report-head,
+.budget-report-main,
+.budget-report-detail-panel,
+.budget-report-action-panel,
+.budget-report-summary-card {
+  border: 1px solid #dbe4ee;
+  border-radius: 8px;
+  background: #fff;
+  box-shadow: 0 8px 20px rgba(15, 23, 42, .05);
+}
+
+.budget-report-head {
+  padding: 14px 16px;
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 16px;
+  border-left: 3px solid var(--theme-primary);
+}
+
+.budget-report-kicker,
+.budget-report-head p,
+.budget-report-section-head span,
+.budget-report-action-panel span {
+  color: #64748b;
+  font-size: 12px;
+  font-weight: 700;
+}
+
+.budget-report-head h3 {
+  margin: 4px 0 4px;
+  color: #0f172a;
+  font-size: 17px;
+  font-weight: 850;
+  line-height: 1.3;
+}
+
+.budget-report-head p,
+.budget-report-action-panel p {
+  margin: 0;
+}
+
+.budget-report-badge {
+  min-height: 28px;
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  padding: 0 10px;
+  border-radius: 999px;
+  background: var(--theme-primary-soft);
+  color: var(--theme-primary-active);
+  font-size: 12px;
+  font-weight: 800;
+  white-space: nowrap;
+}
+
+.budget-report-summary-grid {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 10px;
+}
+
+.budget-report-summary-card {
+  min-height: 86px;
+  padding: 10px 12px;
+  border-left: 3px solid var(--accent);
+  display: grid;
+  align-content: center;
+  gap: 4px;
+  animation: budgetReportItemIn 460ms var(--ease, ease) both;
+  animation-delay: var(--delay, 0ms);
+}
+
+.budget-report-summary-card span,
+.budget-report-summary-card small {
+  color: #64748b;
+  font-size: 11px;
+  font-weight: 650;
+}
+
+.budget-report-summary-card strong {
+  color: #0f172a;
+  font-size: 18px;
+  font-weight: 850;
+  line-height: 1.1;
+}
+
+.budget-report-main {
+  display: grid;
+  grid-template-columns: minmax(260px, .9fr) minmax(0, 1.1fr);
+  gap: 14px;
+  padding: 14px;
+}
+
+.budget-report-chart-panel,
+.budget-report-macro-panel {
+  min-width: 0;
+}
+
+.budget-report-section-head {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  margin-bottom: 10px;
+}
+
+.budget-report-section-head strong,
+.budget-report-action-panel strong {
+  color: #111827;
+  font-size: 14px;
+  font-weight: 850;
+}
+
+.budget-report-chart-panel :deep(.donut-chart) {
+  min-height: 224px;
+}
+
+.budget-report-chart-panel :deep(.donut-body) {
+  height: 138px;
+  margin-top: 8px;
+}
+
+.budget-report-insight-list {
+  display: grid;
+  gap: 9px;
+  margin: 0;
+  padding-left: 20px;
+}
+
+.budget-report-insight-list li {
+  color: #334155;
+  font-size: 13px;
+  font-weight: 650;
+  line-height: 1.55;
+}
+
+.budget-report-detail-panel {
+  padding: 14px;
+}
+
+.budget-report-expense-list {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 10px;
+}
+
+.budget-report-expense-card {
+  min-width: 0;
+  padding: 12px;
+  border: 1px solid #e2e8f0;
+  border-left: 3px solid var(--accent);
+  border-radius: 8px;
+  background: #fbfdff;
+  animation: budgetReportItemIn 460ms var(--ease, ease) both;
+  animation-delay: var(--delay, 0ms);
+}
+
+.budget-report-expense-card header,
+.budget-report-expense-stats {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  min-width: 0;
+}
+
+.budget-report-expense-card header {
+  margin-bottom: 8px;
+}
+
+.budget-report-dot {
+  width: 9px;
+  height: 9px;
+  border-radius: 3px;
+  background: var(--accent);
+  flex: 0 0 auto;
+}
+
+.budget-report-expense-card header strong {
+  color: #0f172a;
+  font-size: 14px;
+  font-weight: 850;
+}
+
+.budget-report-expense-card header em {
+  margin-left: auto;
+  padding: 1px 7px;
+  border-radius: 999px;
+  font-size: 11px;
+  font-style: normal;
+  font-weight: 850;
+}
+
+.budget-report-expense-card header em.risk {
+  background: rgba(127, 29, 29, .09);
+  color: #7f1d1d;
+}
+
+.budget-report-expense-card header em.warn {
+  background: rgba(245, 158, 11, .14);
+  color: #b45309;
+}
+
+.budget-report-expense-card header em.stable {
+  background: rgba(22, 163, 74, .1);
+  color: #15803d;
+}
+
+.budget-report-expense-stats {
+  flex-wrap: wrap;
+  margin-bottom: 8px;
+}
+
+.budget-report-expense-stats span {
+  min-height: 22px;
+  display: inline-flex;
+  align-items: center;
+  padding: 0 7px;
+  border-radius: 6px;
+  background: #f1f5f9;
+  color: #475569;
+  font-size: 11px;
+  font-weight: 750;
+}
+
+.budget-report-expense-card p,
+.budget-report-expense-card li,
+.budget-report-expense-card footer,
+.budget-report-action-panel p {
+  color: #334155;
+  font-size: 12px;
+  font-weight: 620;
+  line-height: 1.55;
+}
+
+.budget-report-expense-card p {
+  margin: 0 0 8px;
+}
+
+.budget-report-expense-card ul {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  margin: 0 0 8px;
+  padding: 0;
+  list-style: none;
+}
+
+.budget-report-expense-card li {
+  padding: 2px 7px;
+  border-radius: 999px;
+  background: #fff;
+  border: 1px solid #e2e8f0;
+}
+
+.budget-report-expense-card footer {
+  padding-top: 8px;
+  border-top: 1px solid #e2e8f0;
+}
+
+.budget-report-action-panel {
+  padding: 14px 16px;
+  display: flex;
+  justify-content: space-between;
+  gap: 14px;
+  border-left: 3px solid var(--chart-amber);
+}
+
+.budget-report-action-panel div {
+  display: grid;
+  gap: 6px;
+}
+
+@keyframes budgetReportIn {
+  from {
+    opacity: 0;
+    transform: translateY(8px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+@keyframes budgetReportItemIn {
+  from {
+    opacity: 0;
+    transform: translateY(10px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+@media (max-width: 900px) {
+  .budget-report-summary-grid,
+  .budget-report-main,
+  .budget-report-expense-list {
+    grid-template-columns: 1fr;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .budget-assistant-report,
+  .budget-report-summary-card,
+  .budget-report-expense-card {
+    animation: none;
+  }
+}
+</style>

web/src/components/travel/TravelReimbursementInsightPanel.vue

@@ -147,7 +147,7 @@
 
             <TransitionGroup
               v-if="(ui.visibleFlowSteps || ui.flowSteps).length"
-              name="flow-step-reveal"
+              name="el-fade-in-linear"
               tag="div"
               class="review-flow-list"
             >
@@ -356,7 +356,7 @@
 
                 <TransitionGroup
                   v-if="(ui.visibleFlowSteps || ui.flowSteps).length"
-                  name="flow-step-reveal"
+                  name="el-fade-in-linear"
                   tag="div"
                   class="review-flow-list"
                 >
@@ -630,7 +630,7 @@ export default {
   methods: {
     resolveFlowStepStyle(index) {
       return {
-        transitionDelay: `${Math.min(Number(index) || 0, 5) * 70}ms`
+        transitionDelay: `${500 + Math.min(Number(index) || 0, 5) * 80}ms`
       }
     }
   }

web/src/components/travel/TravelReimbursementMessageItem.vue

@@ -35,6 +35,11 @@
       @click="ui.handleAssistantMarkdownClick($event, message)"
     ></div>
 
+    <BudgetAssistantReport
+      v-if="message.role === 'assistant' && message.budgetReport"
+      :report="message.budgetReport"
+    />
+
     <div
       v-if="message.role === 'assistant' && message.applicationPreview"
       class="application-preview-table"
@@ -427,11 +432,13 @@
 </template>
 
 <script>
+import BudgetAssistantReport from './BudgetAssistantReport.vue'
 import EnterpriseSelect from '../shared/EnterpriseSelect.vue'
 
 export default {
   name: 'TravelReimbursementMessageItem',
   components: {
+    BudgetAssistantReport,
     EnterpriseSelect
   },
   props: {