feat(web): update views and services

Views:
- AppShellRouteView.vue: update route view
- SettingsView.vue: update settings view
- TravelReimbursementCreateView.vue: update travel form view
- scripts/SettingsView.js: update settings view logic
- scripts/TravelReimbursementCreateView.js: update travel form logic

Services:
- services/orchestrator.js: update orchestrator service client

web/src/services/orchestrator.js

@@ -6,3 +6,21 @@ export function runOrchestrator(payload) {
     body: JSON.stringify(payload)
   })
 }
+
+export function fetchLatestConversation(userId) {
+  const params = new URLSearchParams({
+    user_id: String(userId || '').trim()
+  })
+
+  return apiRequest(`/orchestrator/conversations/latest?${params.toString()}`)
+}
+
+export function clearUserConversations(userId) {
+  const params = new URLSearchParams({
+    user_id: String(userId || '').trim()
+  })
+
+  return apiRequest(`/orchestrator/conversations?${params.toString()}`, {
+    method: 'DELETE'
+  })
+}

web/src/views/AppShellRouteView.vue

@@ -125,6 +125,7 @@
       :key="smartEntrySessionId"
       :initial-prompt="smartEntryContext.prompt"
       :initial-files="smartEntryContext.files"
+      :initial-conversation="smartEntryContext.conversation"
       :entry-source="smartEntryContext.source"
       :request-context="smartEntryContext.request"
       @close="closeSmartEntry"

web/src/views/SettingsView.vue

@@ -183,6 +183,67 @@
             </section>
           </template>
 
+          <template v-else-if="activeSection === 'session'">
+            <section class="settings-card">
+              <div class="card-head">
+                <div>
+                  <h4>会话保留策略</h4>
+                  <p>控制智能体会话在系统中的保留时长，超过保留期的历史会话会自动清理。</p>
+                </div>
+              </div>
+
+              <div class="form-grid compact-grid">
+                <label class="field">
+                  <span><em>*</em> 保留会话天数</span>
+                  <div
+                    ref="sessionRetentionPickerRef"
+                    class="session-picker-filter"
+                    :class="{ open: sessionRetentionPickerOpen }"
+                  >
+                    <button
+                      class="session-picker-trigger"
+                      type="button"
+                      :aria-expanded="sessionRetentionPickerOpen"
+                      aria-haspopup="dialog"
+                      @click="toggleSessionRetentionPicker"
+                    >
+                      <span class="session-picker-label">{{ pageState.sessionForm.conversationRetentionDays }} 天</span>
+                      <i class="mdi mdi-chevron-down"></i>
+                    </button>
+
+                    <div
+                      v-if="sessionRetentionPickerOpen"
+                      class="session-picker-popover"
+                      role="dialog"
+                      aria-label="选择会话保留天数"
+                    >
+                      <header>
+                        <strong>选择会话保留天数</strong>
+                        <button type="button" aria-label="关闭会话保留天数选择" @click="closeSessionRetentionPicker">
+                          <i class="mdi mdi-close"></i>
+                        </button>
+                      </header>
+
+                      <div class="session-picker-option-list">
+                        <button
+                          v-for="option in sessionRetentionOptions"
+                          :key="option.value"
+                          type="button"
+                          class="session-picker-option"
+                          :class="{ active: pageState.sessionForm.conversationRetentionDays === option.value }"
+                          @click="selectSessionRetentionDays(option.value)"
+                        >
+                          {{ option.label }}
+                        </button>
+                      </div>
+                    </div>
+                  </div>
+                  <small>最小 1 天，最大 10 天，按会话最后活跃时间计算。</small>
+                </label>
+              </div>
+            </section>
+          </template>
+
           <template v-else-if="activeSection === 'llm'">
             <div class="model-grid">
               <section class="settings-card">

web/src/views/TravelReimbursementCreateView.vue

@@ -90,6 +90,35 @@
                       </div>
                     </div>
 
+                    <div v-if="message.role === 'assistant' && message.reviewPayload" class="message-detail-block">
+                      <strong>系统识别</strong>
+                      <p class="review-summary">{{ message.reviewPayload.intent_summary }}</p>
+                      <div v-if="message.reviewPayload.slot_cards?.length" class="review-mini-grid">
+                        <article
+                          v-for="item in message.reviewPayload.slot_cards.slice(0, 4)"
+                          :key="`${message.id}-${item.key}`"
+                          class="review-slot-card compact"
+                          :class="item.status"
+                        >
+                          <span>{{ item.label }}</span>
+                          <strong>{{ item.value || '待补充' }}</strong>
+                        </article>
+                      </div>
+                      <div v-if="message.reviewPayload.confirmation_actions?.length" class="action-list compact">
+                        <article
+                          v-for="item in message.reviewPayload.confirmation_actions"
+                          :key="`${message.id}-${item.action_type}-${item.label}`"
+                          class="action-card"
+                          :class="item.emphasis"
+                        >
+                          <div>
+                            <strong>{{ item.label }}</strong>
+                            <p>{{ item.description }}</p>
+                          </div>
+                        </article>
+                      </div>
+                    </div>
+
                     <div v-if="message.role === 'assistant' && message.draftPayload" class="draft-preview">
                       <header>
                         <strong>{{ message.draftPayload.title }}</strong>
@@ -193,6 +222,19 @@
                         </div>
                       </section>
 
+                      <section v-if="currentInsight.agent.reviewPayload" class="insight-card">
+                        <div class="card-head">
+                          <h4>识别结果</h4>
+                        </div>
+                        <div class="note-block">
+                          <span>{{ currentInsight.agent.reviewPayload.intent }}</span>
+                          <strong>{{ currentInsight.agent.reviewPayload.intent_summary }}</strong>
+                          <p v-if="currentInsight.agent.reviewPayload.missing_slots?.length">
+                            当前仍缺少：{{ currentInsight.agent.reviewPayload.missing_slots.join('、') }}
+                          </p>
+                        </div>
+                      </section>
+
                       <section class="insight-card">
                         <div class="card-head">
                           <h4>运行明细</h4>
@@ -217,6 +259,132 @@
                         </div>
                       </section>
 
+                      <section v-if="currentInsight.agent.reviewPayload?.risk_briefs?.length" class="insight-card">
+                        <div class="card-head">
+                          <h4>历史风险与注意事项</h4>
+                        </div>
+                        <div class="review-brief-list">
+                          <article
+                            v-for="item in currentInsight.agent.reviewPayload.risk_briefs"
+                            :key="`${item.title}-${item.level}`"
+                            class="review-brief-card"
+                            :class="item.level"
+                          >
+                            <strong>{{ item.title }}</strong>
+                            <p>{{ item.content }}</p>
+                          </article>
+                        </div>
+                      </section>
+
+                      <section v-if="currentInsight.agent.reviewPayload?.slot_cards?.length" class="insight-card">
+                        <div class="card-head">
+                          <h4>待确认字段</h4>
+                        </div>
+                        <div class="review-slot-grid">
+                          <article
+                            v-for="item in currentInsight.agent.reviewPayload.slot_cards"
+                            :key="item.key"
+                            class="review-slot-card"
+                            :class="item.status"
+                          >
+                            <header>
+                              <span>{{ item.label }}</span>
+                              <small>{{ item.source }}</small>
+                            </header>
+                            <strong>{{ item.value || '待补充' }}</strong>
+                            <p v-if="item.hint">{{ item.hint }}</p>
+                          </article>
+                        </div>
+                      </section>
+
+                      <section v-if="currentInsight.agent.reviewPayload?.claim_groups?.length" class="insight-card">
+                        <div class="card-head">
+                          <h4>分单建议</h4>
+                        </div>
+                        <div class="review-claim-list">
+                          <article
+                            v-for="item in currentInsight.agent.reviewPayload.claim_groups"
+                            :key="item.group_code"
+                            class="review-claim-card"
+                          >
+                            <header>
+                              <strong>{{ item.title }}</strong>
+                              <span>{{ item.scene_label }}</span>
+                            </header>
+                            <p>{{ item.rationale }}</p>
+                            <div class="message-detail-chip-row">
+                              <span class="message-action-chip">票据 {{ item.document_indexes.join('、') || '待补' }}</span>
+                              <span class="message-action-chip">金额 {{ item.amount_total.toFixed(2) }} 元</span>
+                            </div>
+                          </article>
+                        </div>
+                      </section>
+
+                      <section v-if="currentInsight.agent.reviewPayload?.document_cards?.length" class="insight-card">
+                        <div class="card-head">
+                          <h4>票据识别结果</h4>
+                        </div>
+                        <div class="review-document-list">
+                          <article
+                            v-for="item in currentInsight.agent.reviewPayload.document_cards"
+                            :key="`${item.index}-${item.filename}`"
+                            class="review-document-card"
+                          >
+                            <header>
+                              <div>
+                                <strong>票据 {{ item.index }}</strong>
+                                <span>{{ item.filename }}</span>
+                              </div>
+                              <span class="message-action-chip">{{ item.scene_label }}</span>
+                            </header>
+
+                            <div class="document-preview" :class="resolveDocumentPreview(currentInsight.agent.filePreviews, item.filename)?.kind || 'file'">
+                              <img
+                                v-if="resolveDocumentPreview(currentInsight.agent.filePreviews, item.filename)?.kind === 'image'"
+                                :src="resolveDocumentPreview(currentInsight.agent.filePreviews, item.filename)?.url"
+                                :alt="item.filename"
+                              />
+                              <div v-else class="document-preview-placeholder">
+                                <i class="mdi mdi-file-document-outline"></i>
+                                <span>{{ resolveDocumentPreview(currentInsight.agent.filePreviews, item.filename)?.kind === 'pdf' ? 'PDF' : '附件' }}</span>
+                              </div>
+                            </div>
+
+                            <p>{{ item.summary || '暂无摘要。' }}</p>
+
+                            <div v-if="item.fields?.length" class="review-doc-field-grid">
+                              <article v-for="field in item.fields" :key="`${item.filename}-${field.label}`" class="review-doc-field-card">
+                                <span>{{ field.label }}</span>
+                                <strong>{{ field.value }}</strong>
+                              </article>
+                            </div>
+
+                            <div v-if="item.warnings?.length" class="message-detail-chip-row">
+                              <span v-for="warning in item.warnings" :key="warning" class="message-risk-chip">{{ warning }}</span>
+                            </div>
+                          </article>
+                        </div>
+                      </section>
+
+                      <section v-if="currentInsight.agent.reviewPayload?.confirmation_actions?.length" class="insight-card">
+                        <div class="card-head">
+                          <h4>确认动作</h4>
+                        </div>
+                        <div class="action-list">
+                          <article
+                            v-for="item in currentInsight.agent.reviewPayload.confirmation_actions"
+                            :key="`${item.action_type}-${item.label}`"
+                            class="action-card"
+                            :class="item.emphasis"
+                          >
+                            <div>
+                              <strong>{{ item.label }}</strong>
+                              <p>{{ item.description || item.action_type }}</p>
+                            </div>
+                          </article>
+                        </div>
+                      </section>
+
                       <section v-if="currentInsight.agent.selectedCapabilityCodes?.length" class="insight-card">
                         <div class="card-head">
                           <h4>命中能力</h4>

web/src/views/scripts/SettingsView.js

@@ -1,4 +1,4 @@
-import { computed, onMounted, ref } from 'vue'
+import { computed, onBeforeUnmount, onMounted, ref } from 'vue'
 
 import { useSystemState } from '../../composables/useSystemState.js'
 import { fetchSettings, saveSettings, testModelConnectivity } from '../../services/settings.js'
@@ -27,6 +27,14 @@ const SECTION_DEFINITIONS = [
     longDesc: '集中管理管理员账号、邮箱和登录安全策略。密码仅在当前输入时可见，不会写入浏览器草稿。',
     actionLabel: '保存安全设置'
   },
+  {
+    id: 'session',
+    label: '会话设置',
+    title: '会话留存设置',
+    desc: '会话保留天数',
+    longDesc: '统一配置智能体会话的保留天数。超过保留期的历史会话会在后端清理，避免上下文和管理成本无限增长。',
+    actionLabel: '保存会话设置'
+  },
   {
     id: 'llm',
     label: '大语言模型',
@@ -128,6 +136,10 @@ const MODEL_TEST_CONFIGS = {
 }
 
 const MODEL_API_KEY_CONFIGS = Object.values(MODEL_TEST_CONFIGS)
+const SESSION_RETENTION_OPTIONS = Array.from({ length: 10 }, (_item, index) => ({
+  value: index + 1,
+  label: `${index + 1} 天`
+}))
 
 function normalizeValue(value) {
   return String(value ?? '').trim()
@@ -180,6 +192,9 @@ function buildDefaultState(companyProfile, currentUser) {
       loginAlertEnabled: true,
       adminPasswordConfigured: false
     },
+    sessionForm: {
+      conversationRetentionDays: 3
+    },
     llmForm: {
       mainProvider: 'Codex',
       mainModel: 'codex-mini-latest',
@@ -266,6 +281,7 @@ function mergeState(baseState, overrideState) {
   return {
     companyForm: { ...baseState.companyForm, ...(overrideState?.companyForm || {}) },
     adminForm: { ...baseState.adminForm, ...(overrideState?.adminForm || {}) },
+    sessionForm: { ...baseState.sessionForm, ...(overrideState?.sessionForm || {}) },
     llmForm: mergedLlmForm,
     renderForm: { ...baseState.renderForm, ...(overrideState?.renderForm || {}) },
     logForm: { ...baseState.logForm, ...(overrideState?.logForm || {}) },
@@ -281,6 +297,7 @@ function sanitizeForStorage(state) {
       newPassword: '',
       confirmPassword: ''
     },
+    sessionForm: { ...state.sessionForm },
     llmForm: {
       ...state.llmForm,
       mainApiKey: '',
@@ -378,6 +395,10 @@ function computeSectionStatus(state) {
         normalizeValue(state.adminForm.adminEmail) &&
         Number(state.adminForm.sessionTimeout) >= 5
     ),
+    session: Boolean(
+      Number(state.sessionForm.conversationRetentionDays) >= 1 &&
+        Number(state.sessionForm.conversationRetentionDays) <= 10
+    ),
     llm: Boolean(
       isModelConfigReady(state.llmForm.mainProvider, state.llmForm.mainModel, state.llmForm.mainEndpoint) &&
         isModelConfigReady(state.llmForm.backupProvider, state.llmForm.backupModel, state.llmForm.backupEndpoint) &&
@@ -416,6 +437,8 @@ export default {
     const buildResolvedDefaults = () => buildDefaultState(companyProfile.value, currentUser.value)
     const pageState = ref(mergeState(buildResolvedDefaults(), readStoredSettings()))
     const activeSection = ref('profile')
+    const sessionRetentionPickerOpen = ref(false)
+    const sessionRetentionPickerRef = ref(null)
     const modelTestState = ref({
       main: { status: 'idle', message: '' },
       backup: { status: 'idle', message: '' },
@@ -426,6 +449,7 @@ export default {
     const sections = SECTION_DEFINITIONS
     const logLevels = LOG_LEVELS
     const providerOptions = PROVIDER_OPTIONS
+    const sessionRetentionOptions = SESSION_RETENTION_OPTIONS
 
     const sectionStatus = computed(() => computeSectionStatus(pageState.value))
     const completedSectionCount = computed(() => Object.values(sectionStatus.value).filter(Boolean).length)
@@ -497,6 +521,7 @@ export default {
       return {
         companyForm: { ...pageState.value.companyForm },
         adminForm: { ...pageState.value.adminForm },
+        sessionForm: { ...pageState.value.sessionForm },
         llmForm: buildLlmPayload(pageState.value.llmForm),
         renderForm: buildRenderPayload(pageState.value.renderForm),
         logForm: { ...pageState.value.logForm },
@@ -517,6 +542,7 @@ export default {
     }
 
     function activateSection(sectionId) {
+      sessionRetentionPickerOpen.value = false
       activeSection.value = sectionId
     }
 
@@ -524,6 +550,32 @@ export default {
       pageState.value[formKey][field] = !pageState.value[formKey][field]
     }
 
+    function toggleSessionRetentionPicker() {
+      sessionRetentionPickerOpen.value = !sessionRetentionPickerOpen.value
+    }
+
+    function closeSessionRetentionPicker() {
+      sessionRetentionPickerOpen.value = false
+    }
+
+    function selectSessionRetentionDays(value) {
+      pageState.value.sessionForm.conversationRetentionDays = Number(value)
+      closeSessionRetentionPicker()
+    }
+
+    function handleDocumentPointerDown(event) {
+      if (!sessionRetentionPickerOpen.value) {
+        return
+      }
+
+      const target = event.target
+      if (sessionRetentionPickerRef.value?.contains(target)) {
+        return
+      }
+
+      closeSessionRetentionPicker()
+    }
+
     function applyProviderPreset(testKey) {
       const config = MODEL_TEST_CONFIGS[testKey]
       const llmForm = pageState.value.llmForm
@@ -664,6 +716,23 @@ export default {
       })
     }
 
+    async function saveSessionSection() {
+      const sessionForm = pageState.value.sessionForm
+      const retentionDays = Number(sessionForm.conversationRetentionDays)
+
+      if (retentionDays < 1 || retentionDays > 10) {
+        toast('会话保留天数必须在 1 到 10 天之间。')
+        return
+      }
+
+      await persistRemoteSettings('会话设置已保存。', {
+        preserveModelApiKeys: true,
+        preserveAdminPasswords: true,
+        preserveRenderSecret: true,
+        preserveMailPassword: true
+      })
+    }
+
     async function saveLlmSection() {
       const llmForm = pageState.value.llmForm
       const modelConfigs = [
@@ -762,6 +831,11 @@ export default {
         return
       }
 
+      if (activeSection.value === 'session') {
+        await saveSessionSection()
+        return
+      }
+
       if (activeSection.value === 'llm') {
         await saveLlmSection()
         return
@@ -781,9 +855,18 @@ export default {
     }
 
     onMounted(() => {
+      if (typeof document !== 'undefined') {
+        document.addEventListener('pointerdown', handleDocumentPointerDown)
+      }
       loadSettingsSnapshot()
     })
 
+    onBeforeUnmount(() => {
+      if (typeof document !== 'undefined') {
+        document.removeEventListener('pointerdown', handleDocumentPointerDown)
+      }
+    })
+
     return {
       activeSection,
       activeSectionConfig,
@@ -798,10 +881,16 @@ export default {
       modelTestState,
       pageState,
       providerOptions,
+      sessionRetentionOptions,
+      sessionRetentionPickerOpen,
+      sessionRetentionPickerRef,
       saveActiveSection,
       sectionStatus,
       sections,
+      selectSessionRetentionDays,
       testModelConnection,
+      toggleSessionRetentionPicker,
+      closeSessionRetentionPicker,
       toggleBoolean
     }
   }

web/src/views/scripts/TravelReimbursementCreateView.js

@@ -1,4 +1,4 @@
-import { computed, nextTick, onMounted, ref } from 'vue'
+import { computed, nextTick, onBeforeUnmount, onMounted, ref } from 'vue'
 
 import { useSystemState } from '../../composables/useSystemState.js'
 import { recognizeOcrFiles } from '../../services/ocr.js'
@@ -63,11 +63,29 @@ function createMessage(role, text, attachments = [], extras = {}) {
     citations: [],
     suggestedActions: [],
     draftPayload: null,
+    reviewPayload: null,
     riskFlags: [],
     ...extras
   }
 }
 
+function formatMessageTime(value) {
+  if (!value) {
+    return nowTime()
+  }
+
+  const parsed = new Date(value)
+  if (Number.isNaN(parsed.getTime())) {
+    return nowTime()
+  }
+
+  return parsed.toLocaleTimeString('zh-CN', {
+    hour: '2-digit',
+    minute: '2-digit',
+    hour12: false
+  })
+}
+
 function sanitizeRequest(request) {
   if (!request) return { ...DEFAULT_REQUEST }
   return {
@@ -129,6 +147,22 @@ function buildMessageMeta(payload, fileNames = []) {
   return items
 }
 
+function buildStoredMessageMeta(messageJson, attachmentNames = []) {
+  const payload = messageJson?.orchestrator_payload
+  if (payload) {
+    return buildMessageMeta(payload, attachmentNames)
+  }
+
+  const items = []
+  if (messageJson?.status) {
+    items.push(`状态: ${messageJson.status}`)
+  }
+  if (attachmentNames.length) {
+    items.push(`附件: ${attachmentNames.length}`)
+  }
+  return items
+}
+
 function normalizeOcrDocuments(payload) {
   const documents = Array.isArray(payload?.documents) ? payload.documents : []
   return documents.slice(0, 5).map((item) => ({
@@ -149,6 +183,43 @@ function buildOcrSummary(payload) {
   return parts.join('；')
 }
 
+function inferPreviewKind(file) {
+  const mediaType = String(file?.type || '').toLowerCase()
+  const filename = String(file?.name || '').toLowerCase()
+  if (mediaType.startsWith('image/') || /\.(png|jpg|jpeg|webp|bmp)$/i.test(filename)) {
+    return 'image'
+  }
+  if (mediaType.includes('pdf') || /\.pdf$/i.test(filename)) {
+    return 'pdf'
+  }
+  return 'file'
+}
+
+function buildFilePreviews(files, previewRegistry) {
+  return files.map((file) => {
+    const kind = inferPreviewKind(file)
+    if (kind !== 'image') {
+      return {
+        filename: file.name,
+        kind
+      }
+    }
+
+    const url = URL.createObjectURL(file)
+    previewRegistry.push(url)
+    return {
+      filename: file.name,
+      kind,
+      url
+    }
+  })
+}
+
+function resolveDocumentPreview(filePreviews, filename) {
+  if (!Array.isArray(filePreviews)) return null
+  return filePreviews.find((item) => item.filename === filename) ?? null
+}
+
 function buildWelcomeInsight(entrySource, linkedRequest) {
   return {
     intent: 'welcome',
@@ -163,6 +234,41 @@ function buildWelcomeInsight(entrySource, linkedRequest) {
   }
 }
 
+function resolveInitialConversationId(conversation) {
+  return String(conversation?.conversation_id || conversation?.conversationId || '').trim()
+}
+
+function resolveInitialDraftClaimId(conversation) {
+  return String(conversation?.draft_claim_id || conversation?.draftClaimId || '').trim()
+}
+
+function normalizeInitialConversationMessages(conversation) {
+  const rawMessages = Array.isArray(conversation?.messages) ? conversation.messages : []
+
+  return rawMessages.map((item) => {
+    const messageJson = item?.message_json || item?.messageJson || {}
+    const attachmentNames = Array.isArray(messageJson?.attachment_names)
+      ? messageJson.attachment_names.filter(Boolean)
+      : []
+    const orchestratorPayload = messageJson?.orchestrator_payload || null
+    const result = orchestratorPayload?.result || {}
+
+    return createMessage(item.role, item.content, attachmentNames, {
+      id: `restored-${item.id || ++messageSeed}`,
+      time: formatMessageTime(item.created_at || item.createdAt),
+      meta: item.role === 'assistant' ? buildStoredMessageMeta(messageJson, attachmentNames) : [],
+      citations: item.role === 'assistant' && Array.isArray(result?.citations) ? result.citations : [],
+      suggestedActions:
+        item.role === 'assistant' && Array.isArray(result?.suggested_actions)
+          ? result.suggested_actions
+          : [],
+      draftPayload: item.role === 'assistant' ? result?.draft_payload || messageJson?.draft_payload || null : null,
+      reviewPayload: item.role === 'assistant' ? result?.review_payload || null : null,
+      riskFlags: item.role === 'assistant' && Array.isArray(result?.risk_flags) ? result.risk_flags : []
+    })
+  })
+}
+
 function buildErrorInsight(error, fileNames = []) {
   return {
     intent: 'agent',
@@ -183,17 +289,19 @@ function buildErrorInsight(error, fileNames = []) {
       citations: [],
       suggestedActions: [],
       draftPayload: null,
+      reviewPayload: null,
       riskFlags: [],
       toolCount: 0,
       failedToolCount: 0,
       selectedCapabilityCodes: [],
+      filePreviews: [],
       statusLabel: '失败',
       statusTone: 'note'
     }
   }
 }
 
-function buildAgentInsight(payload, fileNames = []) {
+function buildAgentInsight(payload, fileNames = [], filePreviews = []) {
   const trace = payload?.trace_summary || {}
   const result = payload?.result || {}
   const statusLabel = resolveStatusLabel(payload?.status)
@@ -219,12 +327,14 @@ function buildAgentInsight(payload, fileNames = []) {
       citations: Array.isArray(result?.citations) ? result.citations : [],
       suggestedActions: Array.isArray(result?.suggested_actions) ? result.suggested_actions : [],
       draftPayload: result?.draft_payload || null,
+      reviewPayload: result?.review_payload || null,
       riskFlags: Array.isArray(result?.risk_flags) ? result.risk_flags : [],
       toolCount: Number(trace?.tool_count || 0),
       failedToolCount: Number(trace?.failed_tool_count || 0),
       selectedCapabilityCodes: Array.isArray(trace?.selected_capability_codes)
         ? trace.selected_capability_codes
         : [],
+      filePreviews,
       statusLabel,
       statusTone: resolveStatusTone(payload?.status)
     }
@@ -242,6 +352,10 @@ export default {
       type: Array,
       default: () => []
     },
+    initialConversation: {
+      type: Object,
+      default: null
+    },
     entrySource: {
       type: String,
       default: 'requests'
@@ -260,8 +374,23 @@ export default {
     const composerDraft = ref('')
     const attachedFiles = ref([])
     const submitting = ref(false)
-    const messages = ref([])
     const linkedRequest = computed(() => sanitizeRequest(props.requestContext))
+    const restoredMessages = normalizeInitialConversationMessages(props.initialConversation)
+    const messages = ref(
+      restoredMessages.length
+        ? restoredMessages
+        : [
+            createMessage(
+              'assistant',
+              props.entrySource === 'detail'
+                ? `已进入统一对话工作台，当前关联单据 ${linkedRequest.value.id}。你的提问会直接进入真实智能体链路。`
+                : '这里是统一对话入口。你发送的内容会直接进入真实 Orchestrator 和 User Agent。'
+            )
+          ]
+    )
+    const conversationId = ref(resolveInitialConversationId(props.initialConversation))
+    const draftClaimId = ref(resolveInitialDraftClaimId(props.initialConversation))
+    const previewRegistry = []
 
     const currentInsight = ref(buildWelcomeInsight(props.entrySource, linkedRequest.value))
     const sourceLabel = computed(() => SOURCE_LABELS[props.entrySource] ?? '来自 AI 工作台')
@@ -333,15 +462,6 @@ export default {
       ]
     })
 
-    messages.value = [
-      createMessage(
-        'assistant',
-        props.entrySource === 'detail'
-          ? `已进入统一对话工作台，当前关联单据 ${linkedRequest.value.id}。你的提问会直接进入真实智能体链路。`
-          : '这里是统一对话入口。你发送的内容会直接进入真实 Orchestrator 和 User Agent。'
-      )
-    ]
-
     onMounted(() => {
       currentInsight.value = buildWelcomeInsight(props.entrySource, linkedRequest.value)
       if (props.initialPrompt?.trim() || props.initialFiles.length) {
@@ -353,6 +473,12 @@ export default {
       }
     })
 
+    onBeforeUnmount(() => {
+      for (const url of previewRegistry) {
+        URL.revokeObjectURL(url)
+      }
+    })
+
     function scrollToBottom() {
       if (!messageListRef.value) return
       messageListRef.value.scrollTop = messageListRef.value.scrollHeight
@@ -412,6 +538,7 @@ export default {
       const rawText = composerDraft.value.trim()
       const files = Array.from(attachedFiles.value)
       const fileNames = files.map((file) => file.name)
+      const filePreviews = buildFilePreviews(files, previewRegistry)
       const userText =
         rawText || `我上传了 ${fileNames.length} 份票据，请帮我识别并给出报销建议。`
 
@@ -451,6 +578,7 @@ export default {
         const payload = await runOrchestrator({
           source: 'user_message',
           user_id: user.username || user.name || 'anonymous',
+          conversation_id: conversationId.value || null,
           message: backendMessage,
           context_json: {
             role_codes: Array.isArray(user.roleCodes) ? user.roleCodes : [],
@@ -461,11 +589,16 @@ export default {
             request_context: linkedRequest.value,
             attachment_names: fileNames,
             attachment_count: fileNames.length,
+            draft_claim_id: draftClaimId.value || undefined,
             ocr_summary: ocrSummary,
             ocr_documents: ocrDocuments
           }
         })
 
+        conversationId.value = String(payload?.conversation_id || '').trim() || conversationId.value
+        draftClaimId.value =
+          String(payload?.result?.draft_payload?.claim_id || '').trim() || draftClaimId.value
+
         replaceMessage(
           pendingMessage.id,
           createMessage('assistant', payload?.result?.answer || payload?.result?.message || '智能体已完成处理。', [], {
@@ -475,10 +608,11 @@ export default {
               ? payload.result.suggested_actions
               : [],
             draftPayload: payload?.result?.draft_payload || null,
+            reviewPayload: payload?.result?.review_payload || null,
             riskFlags: Array.isArray(payload?.result?.risk_flags) ? payload.result.risk_flags : []
           })
         )
-        currentInsight.value = buildAgentInsight(payload, fileNames)
+        currentInsight.value = buildAgentInsight(payload, fileNames, filePreviews)
       } catch (error) {
         replaceMessage(
           pendingMessage.id,
@@ -514,6 +648,7 @@ export default {
       composerPlaceholder,
       currentIntentLabel,
       shortcuts,
+      resolveDocumentPreview,
       triggerFileUpload,
       handleFilesChange,
       runShortcut,