feat: 报销预审会话状态管理与工作台交互增强

- 新增差旅报销会话状态管理与对话模型重构
- 增强风险观测服务与运行时聊天上下文作用域
- 优化工作台图标资源、助理意图识别与摘要工具
- 完善报销创建视图样式与差旅详情页标准调整交互
- 补充风险观测、运行时聊天与报销端点测试覆盖

web/src/components/business/PersonalWorkbench.vue

@@ -9,7 +9,7 @@
 
     <article class="panel assistant-hero" :style="{ '--assistant-bg-image': `url(${workbenchHeroBackground})` }">
       <div class="assistant-copy">
-        <h1>嗨，{{ displayUserName }}，我是您的 <span>AI 费用助手</span></h1>
+        <h1>嗨，{{ displayUserName }}，我是您的 <span>小财管家</span></h1>
 
         <input
           ref="fileInputRef"
@@ -26,7 +26,7 @@
             v-model="assistantDraft"
             maxlength="1000"
             rows="2"
-            placeholder="请输入费用申请、报销问题、预算查询或制度问答..."
+            placeholder="一次性描述申请、报销和附件处理事项，小财管家会先拆解再执行..."
             :readonly="isComposerPending"
             @keydown.enter.prevent="handleWorkbenchEnter"
           />
@@ -180,7 +180,12 @@
         :class="`capability-card--${item.tone}`"
         @click="openCapabilityAssistant(item)"
       >
-        <span class="capability-icon"><i :class="item.icon"></i></span>
+        <WorkbenchListIcon
+          class="capability-icon"
+          :icon-key="item.key"
+          color="var(--capability-color)"
+          accent="var(--capability-soft)"
+        />
         <span class="capability-copy">
           <strong>{{ item.title }}</strong>
           <small>{{ item.primary }}</small>
@@ -221,8 +226,8 @@
               <small>{{ item.id }}</small>
             </span>
 
-            <span class="progress-type" :title="item.expenseTypeLabel || '其他费用'">
-              <strong>{{ item.expenseTypeLabel || '其他费用' }}</strong>
+            <span class="progress-type" :title="`${item.documentTypeLabel} · ${item.expenseTypeLabel || '其他费用'}`">
+              <strong>{{ item.documentTypeLabel }} · {{ item.expenseTypeLabel || '其他费用' }}</strong>
             </span>
 
             <span class="progress-steps" aria-hidden="true">
@@ -349,9 +354,10 @@
 <script setup>
 import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue'
 import PanelHead from '../shared/PanelHead.vue'
+import WorkbenchListIcon from '../shared/WorkbenchListIcon.vue'
 import ExpenseStatsDetailModal from './ExpenseStatsDetailModal.vue'
 import ExpenseProfileDetailModal from './ExpenseProfileDetailModal.vue'
-import workbenchHeroBackground from '../../assets/personal-workbench-hero-bg-theme-base.webp'
+import workbenchHeroBackground from '../../assets/images/hero-3d-banner.png'
 import { useSystemState } from '../../composables/useSystemState.js'
 import { useToast } from '../../composables/useToast.js'
 import { useWorkbenchComposerDate } from '../../composables/useWorkbenchComposerDate.js'
@@ -425,6 +431,7 @@ let employeeProfileLoadSeq = 0
 const MAX_ATTACHMENTS = 10
 const SESSION_TYPE_EXPENSE = 'expense'
 const SESSION_TYPE_KNOWLEDGE = 'knowledge'
+const SESSION_TYPE_STEWARD = 'steward'
 
 const hasExpenseConversation = computed(() =>
   Boolean(latestExpenseConversation.value?.conversation_id || latestExpenseConversation.value?.conversationId)
@@ -607,6 +614,7 @@ function buildAssistantPayload() {
   return {
     prompt: buildWorkbenchPromptText(),
     source: 'workbench',
+    sessionType: SESSION_TYPE_STEWARD,
     files: Array.from(selectedFiles.value)
   }
 }
@@ -674,7 +682,7 @@ function applyQuickPrompt(prompt) {
   focusAssistantInput()
 }
 
-function openPromptAssistant(prompt) {
+function openPromptAssistant(prompt, sessionType = SESSION_TYPE_STEWARD) {
   if (pendingAction.value) {
     return
   }
@@ -682,6 +690,7 @@ function openPromptAssistant(prompt) {
   const payload = {
     prompt: buildWorkbenchPromptText(prompt),
     source: 'workbench',
+    sessionType,
     files: Array.from(selectedFiles.value),
     conversation: null
   }
@@ -704,7 +713,7 @@ function openWorkbenchTarget(item) {
     return
   }
 
-  openPromptAssistant(item?.prompt || `查询 ${item?.id || ''} 的费用进度`)
+  openPromptAssistant(item?.prompt || `查询 ${item?.id || ''} 的费用进度`, SESSION_TYPE_EXPENSE)
 }
 
 function openCapabilityAssistant(item) {