feat(web): AI 工作台文件预览/附件关联任务与草稿分支

- 新增 WorkbenchAiFilePreviewDialog 附件预览对话框及 useWorkbenchAiFilePreview，附件支持点击预览
- 新增 attachmentAssociationJobs/linkedReimbursementDraftJobs 前端服务与对应 composable，接入后台任务轮询与状态展示
- 新增 travelReimbursementDraftBranchModel 草稿分支模型，报销关联门控支持跳过/选择草稿
- PersonalWorkbenchAiMode 及各 composable（expense/document/steward/application-preview/attachment-association）重构适配，WorkbenchAiComposer/FileStrip 样式与交互完善
- DocumentsCenter/ReceiptFolder/TravelReimbursementCreate 等视图及 scripts 重构，风险/差旅规划/审批等工具适配
- 新增/更新前端测试：application-result-card、reimbursement-list-preview-fetch、guided-flow、composer-components 等

web/src/components/business/PersonalWorkbench.vue

@@ -286,7 +286,7 @@ const reimbursementTrendHasSignal = computed(() =>
 )
 const reimbursementTrendRows = computed(() => sourceReimbursementTrendRows.value)
 const reimbursementTrendSignalLabel = computed(() =>
-  reimbursementTrendHasSignal.value ? '来自你的真实单据' : '暂无单据时展示空走势'
+  reimbursementTrendHasSignal.value ? '来自您的真实单据' : '暂无单据时展示空走势'
 )
 const reimbursementTrendLabels = computed(() => reimbursementTrendRows.value.map((item) => item.label))
 const reimbursementTrendAmounts = computed(() => reimbursementTrendRows.value.map((item) => item.amount))

web/src/components/business/PersonalWorkbenchAiMode.template.html

@@ -405,6 +405,8 @@
       </div>
     </Transition>
 
+    <WorkbenchAiFilePreviewDialog :runtime="workbenchAiRuntime" />
+
     <Transition name="workbench-ai-confirm-fade">
       <div v-if="deleteDialogOpen" class="workbench-ai-confirm-mask" role="presentation" @click.self="cancelDeleteConversation">
         <div

web/src/components/business/PersonalWorkbenchAiMode.vue

@@ -5,6 +5,7 @@ import { proxyRefs } from 'vue'
 import orbIcon from '../../assets/workbench-ai-mode-orb-icon.gif'
 import WorkbenchAiComposer from './workbench-ai/WorkbenchAiComposer.vue'
 import WorkbenchAiFileStrip from './workbench-ai/WorkbenchAiFileStrip.vue'
+import WorkbenchAiFilePreviewDialog from './workbench-ai/WorkbenchAiFilePreviewDialog.vue'
 import { usePersonalWorkbenchAiMode } from '../../composables/workbenchAiMode/usePersonalWorkbenchAiMode.js'
 
 const props = defineProps({

web/src/components/business/workbench-ai/WorkbenchAiComposer.vue

@@ -23,7 +23,7 @@
         v-model="runtime.assistantDraft"
         maxlength="1000"
         rows="3"
-        :placeholder="runtime.isAiModeInputLocked ? '费用测算中，请稍等...' : placeholder"
+        :placeholder="runtime.isAiModeInputLocked ? runtime.aiModeInputLockMessage : placeholder"
         :disabled="runtime.isAiModeInputLocked"
         @keydown.enter.exact.prevent="runtime.submitAiModePrompt"
       ></textarea>

web/src/components/business/workbench-ai/WorkbenchAiFilePreviewDialog.vue

@@ -0,0 +1,109 @@
+<template>
+  <Transition name="workbench-ai-preview-fade">
+    <div
+      v-if="preview"
+      class="workbench-ai-file-preview-mask"
+      role="presentation"
+      @click.self="runtime.closeAiModeFilePreview"
+    >
+      <section class="workbench-ai-file-preview-dialog" role="dialog" aria-modal="true" @click.stop>
+        <header class="workbench-ai-file-preview-head">
+          <div>
+            <span class="workbench-ai-file-preview-badge">附件预览</span>
+            <h3>{{ preview.name }}</h3>
+          </div>
+          <button
+            type="button"
+            class="workbench-ai-file-preview-close"
+            aria-label="关闭附件预览"
+            @click="runtime.closeAiModeFilePreview"
+          >
+            <i class="mdi mdi-close"></i>
+          </button>
+        </header>
+
+        <div class="workbench-ai-file-preview-body">
+          <div class="workbench-ai-file-preview-source">
+            <img
+              v-if="preview.sourceKind === 'image'"
+              :src="preview.sourceUrl"
+              :alt="preview.name"
+              class="workbench-ai-file-preview-image"
+            />
+            <iframe
+              v-else-if="preview.sourceKind === 'pdf'"
+              :src="preview.sourceUrl"
+              class="workbench-ai-file-preview-frame"
+              title="附件 PDF 预览"
+            ></iframe>
+            <div v-else class="workbench-ai-file-preview-state">
+              <i class="mdi mdi-file-eye-outline"></i>
+              <span>当前附件暂不支持直接预览。</span>
+            </div>
+          </div>
+
+          <aside class="workbench-ai-file-preview-insight">
+            <div class="workbench-ai-file-preview-insight-head">
+              <span>识别信息</span>
+              <strong>{{ preview.documentTypeLabel }}</strong>
+            </div>
+
+            <div
+              class="workbench-ai-file-preview-status"
+              :class="`is-${preview.recognitionStatus}`"
+              :title="preview.recognitionStatusTitle"
+            >
+              <i v-if="preview.recognitionStatus === 'recognizing'" class="mdi mdi-loading"></i>
+              <i v-else-if="preview.recognitionStatus === 'recognized'" class="mdi mdi-text-recognition"></i>
+              <i v-else-if="preview.recognitionStatus === 'failed'" class="mdi mdi-alert-circle-outline"></i>
+              <i v-else class="mdi mdi-file-search-outline"></i>
+              <span>{{ preview.recognitionStatusLabel }}</span>
+            </div>
+
+            <section class="workbench-ai-file-preview-section">
+              <span>文件信息</span>
+              <dl>
+                <template v-for="row in preview.fileInfoRows" :key="row.label">
+                  <dt>{{ row.label }}</dt>
+                  <dd>{{ row.value }}</dd>
+                </template>
+              </dl>
+            </section>
+
+            <section v-if="preview.ocrFields.length" class="workbench-ai-file-preview-section">
+              <span>字段结果</span>
+              <dl>
+                <template v-for="field in preview.ocrFields" :key="`${field.label}-${field.value}`">
+                  <dt>{{ field.label }}</dt>
+                  <dd>{{ field.value }}</dd>
+                </template>
+              </dl>
+            </section>
+
+            <section v-if="preview.ocrSummary" class="workbench-ai-file-preview-section">
+              <span>识别摘要</span>
+              <p>{{ preview.ocrSummary }}</p>
+            </section>
+
+            <section v-if="preview.rawText" class="workbench-ai-file-preview-section">
+              <span>OCR 原文</span>
+              <p>{{ preview.rawText }}</p>
+            </section>
+          </aside>
+        </div>
+      </section>
+    </div>
+  </Transition>
+</template>
+
+<script setup>
+import { computed } from 'vue'
+
+const props = defineProps({
+  runtime: { type: Object, required: true }
+})
+
+const preview = computed(() => props.runtime.activeAiModeFilePreview || null)
+</script>
+
+<style scoped src="../../../assets/styles/components/workbench-ai-file-preview-dialog.css"></style>

web/src/components/business/workbench-ai/WorkbenchAiFileStrip.vue

@@ -5,7 +5,17 @@
     :class="{ inline }"
     aria-label="已选择附件"
   >
-    <article v-for="file in runtime.selectedFileCards" :key="file.key" class="workbench-ai-file-card">
+    <article
+      v-for="file in runtime.selectedFileCards"
+      :key="file.key"
+      class="workbench-ai-file-card"
+      role="button"
+      tabindex="0"
+      :aria-label="`预览附件 ${file.name}`"
+      @click="runtime.openAiModeFilePreview(file.key)"
+      @keydown.enter.prevent="runtime.openAiModeFilePreview(file.key)"
+      @keydown.space.prevent="runtime.openAiModeFilePreview(file.key)"
+    >
       <span class="workbench-ai-file-card__icon" :class="`type-${file.tone}`" aria-hidden="true">
         <i :class="file.icon"></i>
       </span>
@@ -29,7 +39,7 @@
         class="workbench-ai-file-card__remove"
         :disabled="runtime.isAiModeInputLocked"
         :aria-label="`移除附件 ${file.name}`"
-        @click="runtime.removeAiModeFile(file.key)"
+        @click.stop="runtime.removeAiModeFile(file.key)"
       >
         <i class="mdi mdi-close"></i>
       </button>

web/src/components/shared/RiskRuleTestDialog.vue

@@ -741,7 +741,7 @@ function buildFieldStepDescription() {
   if (activeSimulationResult.value?.recognized_fields?.length) {
     return `已确认 ${activeSimulationResult.value.recognized_fields.length} 个字段。`
   }
-  if (draft.value.trim()) return '将使用你输入的文字抽取测试字段。'
+  if (draft.value.trim()) return '将使用您输入的文字抽取测试字段。'
   return '识别完成或补充字段后进入确认。'
 }
 
@@ -756,7 +756,7 @@ function buildWelcomeMessage() {
   if (requiresAttachment.value) {
     return '这条规则要求测试附件。请先上传临时票据并填写测试意图，点击发送后我会统一识别附件和文字，再交给规则执行器判断。'
   }
-  return '这条规则不需要上传附件。你可以直接输入测试事实，我只会执行风险识别，不创建单据、不写入主工作台会话。'
+  return '这条规则不需要上传附件。您可以直接输入测试事实，我只会执行风险识别，不创建单据、不写入主工作台会话。'
 }
 
 function clearFileInput() {

web/src/components/travel/TravelReimbursementInsightPanel.vue

@@ -505,7 +505,7 @@
                         <i class="mdi mdi-text-recognition"></i>
                       </span>
                       <strong>暂无结构化字段</strong>
-                      <p>当前只返回了摘要信息，你仍然可以直接修改上面的票据摘要。</p>
+                      <p>当前只返回了摘要信息，您仍然可以直接修改上面的票据摘要。</p>
                     </div>
 
                     <div v-if="ui.activeReviewDocument.warnings?.length" class="review-document-warning-list">

web/src/components/travel/TravelReimbursementMessageItem.vue

@@ -549,7 +549,7 @@
             {{ line }}
           </p>
           <p v-if="ui.canUseInlineSaveDraft(message)" class="review-inline-save-copy">
-            请核查上面的关键信息。您也可以暂时不处理上述的这些内容，我可以帮你先保存为
+            请核查上面的关键信息。您也可以暂时不处理上述的这些内容，我可以帮您先保存为
             <button
               type="button"
               class="review-inline-draft-link"