feat(dataset): 补全样本原文与删除操作

frontend/scripts/regression-dataset-preview.mjs

@@ -15,6 +15,7 @@ const apiPath = path.join(root, 'src/api/modules/dataset.ts')
 const adapterPath = path.join(root, 'src/mock/adapter.ts')
 const mockPath = path.join(root, 'src/mock/data.ts')
 const recordsPath = path.join(root, 'src/views/dataset/datasetRecords.ts')
+const recordEditorPath = path.join(root, 'src/views/dataset/preview/useDatasetRecordEditor.ts')
 const versionsPath = path.join(root, 'src/mock/datasetVersions.ts')
 const source = fs.readFileSync(previewPath, 'utf8')
 const previewLogicSource = source.slice(0, source.indexOf('<style'))
@@ -27,11 +28,12 @@ const apiSource = fs.readFileSync(apiPath, 'utf8')
 const adapterSource = fs.readFileSync(adapterPath, 'utf8')
 const mockSource = fs.readFileSync(mockPath, 'utf8')
 const recordsSource = fs.readFileSync(recordsPath, 'utf8')
+const recordEditorSource = fs.readFileSync(recordEditorPath, 'utf8')
 const versionsSource = fs.readFileSync(versionsPath, 'utf8')
 const recordsModuleCode = ts.transpileModule(recordsSource, {
   compilerOptions: { module: ts.ModuleKind.ESNext, target: ts.ScriptTarget.ES2022 },
 }).outputText
-const { parseDatasetRecords, updateDatasetRecord } = await import(
+const { deleteDatasetRecord, parseDatasetRecords, updateDatasetRecord } = await import(
   `data:text/javascript;base64,${Buffer.from(recordsModuleCode).toString('base64')}`
 )
 const versionsModuleCode = ts.transpileModule(versionsSource, {
@@ -65,6 +67,12 @@ expect(previewSurfaceSource.includes('class="record-table"'), '样本数据应
 expect(previewSurfaceSource.includes('fixed="right"'), '逐条编辑操作列应固定在表格右侧')
 expect(previewSurfaceSource.includes('v-for="fieldKey in tableFieldKeys"'), '企业表格应根据数据结构动态生成字段列')
 expect(previewSurfaceSource.includes("emit('edit', asDatasetRecord(row))"), '每条样本应向主页面发送编辑事件')
+expect(previewSurfaceSource.includes("emit('delete', asDatasetRecord(row))"), '每条样本应提供删除操作')
+expect(previewSurfaceSource.includes('label="原文参照"'), '样本列表应展示生成内容对应的原文参照')
+expect(source.includes('getDatasetFileRecordSources'), '详情页应从后端读取发布样本的真实原文')
+expect(recordEditorSource.includes('deleteDatasetRecord('), '删除样本应只修改当前文件草稿')
+expect(recordEditorSource.includes('删除后将暂存到当前草稿'), '删除样本前应说明保存版本后才生效')
+expect(source.includes('selectedFileSize'), '详情文件大小也应统一显示为 MB')
 expect(previewSurfaceSource.includes('暂存修改'), '单条编辑应先暂存到当前页面')
 expect(source.includes('hasPendingVersionChanges && isViewingActiveVersion'), '存在暂存修改时才应显示保存版本按钮')
 expect(source.includes('保存版本'), '文件工具栏应提供保存版本按钮')
@@ -85,10 +93,10 @@ expect(source.includes('hasUnsavedChanges'), '在线编辑器应跟踪未保存
 expect(source.includes('onBeforeRouteLeave'), '离开页面时应保护未保存修改')
 expect(previewSurfaceSource.includes("event.key.toLowerCase() === 's'"), '在线编辑器应支持快捷键保存')
 expect(source.includes('loadVersions(selectedFile)'), '版本内容加载失败后应支持重新加载')
-expect(source.includes('function resetRecordEditor()'), '主页面应提供统一的编辑器状态清理函数')
+expect(recordEditorSource.includes('function resetRecordEditor()'), '编辑器逻辑应提供统一的状态清理函数')
-const resetEditorStart = source.indexOf('function resetRecordEditor()')
+const resetEditorStart = recordEditorSource.indexOf('function resetRecordEditor()')
-const updateFieldStart = source.indexOf('function updateEditField', resetEditorStart)
+const updateFieldStart = recordEditorSource.indexOf('function openRecordEditor', resetEditorStart)
-const resetEditorSource = source.slice(resetEditorStart, updateFieldStart)
+const resetEditorSource = recordEditorSource.slice(resetEditorStart, updateFieldStart)
 for (const marker of [
   'editorVisible.value = false',
   'editingRecord.value = null',
@@ -141,6 +149,9 @@ const afterLines = updated.split('\n')
 expect(afterLines[0] === beforeLines[0] && afterLines[1] === '', '单条保存不得改写其他样本或空行')
 expect(JSON.parse(afterLines[2]).instruction === '第二条已修改', '单条保存应准确更新目标样本')
 expect(Array.isArray(JSON.parse(afterLines[2]).output), '单条保存不应丢失数组等非字符串字段类型')
+const deleted = deleteDatasetRecord(updated, 'samples.jsonl', 2)
+expect(!deleted.includes('第二条已修改'), '删除样本应准确移除目标 JSONL 记录')
+expect(deleted.split('\n')[0] === beforeLines[0], '删除样本不得改写其他 JSONL 记录')
 const invalid = parseDatasetRecords('{invalid json}', 'samples.jsonl')
 expect(invalid.records[0].kind === 'invalid' && invalid.records[0].error, '非法 JSON 行应被单独标记并给出错误')
 const repairedJson = updateDatasetRecord('{invalid json}', 'samples.json', 0, { repaired: true })

frontend/src/views/dataset/DatasetPreviewView.vue

@@ -10,18 +10,27 @@ import {
   deleteDatasetFileVersion,
   downloadFileUrl,
   getDataset,
+  getDatasetFileRecordSources,
   getDatasetFileVersionContent,
   getDatasetFileVersions,
 } from '@/api/modules/dataset'
 import { DATASET_TYPE_MAP, STORAGE_MAP } from '@/constants'
-import { parseDatasetRecords, updateDatasetRecord } from './datasetRecords'
+import {
-import type { DatasetRecord } from './datasetRecords'
+  attachDatasetRecordSources,
+  parseDatasetRecords,
+} from './datasetRecords'
 import DatasetVersionBar from './preview/DatasetVersionBar.vue'
 import DatasetRecordTable from './preview/DatasetRecordTable.vue'
 import DatasetRecordEditorDialog from './preview/DatasetRecordEditorDialog.vue'
 import DatasetRawPreview from './preview/DatasetRawPreview.vue'
-import type { EditField } from './preview/types'
+import { useDatasetRecordEditor } from './preview/useDatasetRecordEditor'
-import type { DatasetFile, DatasetItem, DatasetVersion } from '@/types'
+import { formatMegabytes } from '@/utils/fileSize'
+import type {
+  DatasetFile,
+  DatasetItem,
+  DatasetRecordSource,
+  DatasetVersion,
+} from '@/types'
 
 const route = useRoute()
 const datasetId = route.params.id as string
@@ -34,14 +43,9 @@ const selectedFileId = ref('')
 const previewContent = ref('')
 const baseVersionContent = ref('')
 const previewError = ref('')
-const editorVisible = ref(false)
-const editingRecord = ref<DatasetRecord | null>(null)
-const editFields = ref<EditField[]>([])
-const rawDraft = ref('')
-const originalDraft = ref('')
-const savingRecord = ref(false)
 const savingVersion = ref(false)
 const versions = ref<DatasetVersion[]>([])
+const recordSources = ref<DatasetRecordSource[]>([])
 const selectedVersionId = ref('')
 const activeVersionId = ref('')
 const loadedVersionId = ref('')
@@ -56,15 +60,13 @@ const selectedFile = computed(() => files.value.find((file) => fileKey(file) ===
 const totalLines = computed(() => previewContent.value ? previewContent.value.split('\n').length : 0)
 const recordResult = computed(() => parseDatasetRecords(previewContent.value, selectedFile.value?.name || ''))
 const isRecordFile = computed(() => recordResult.value.supported)
-const records = computed(() => recordResult.value.records)
+const records = computed(() => attachDatasetRecordSources(
+  recordResult.value.records,
+  recordSources.value,
+))
 const viewedVersion = computed(() => versions.value.find((item) => item.id === loadedVersionId.value))
 const isViewingActiveVersion = computed(() => Boolean(loadedVersionId.value) && loadedVersionId.value === activeVersionId.value)
-const currentDraft = computed(() => editingRecord.value?.kind === 'object'
-  ? JSON.stringify(editFields.value)
-  : rawDraft.value)
-const hasEditorDraftChanges = computed(() => editorVisible.value && currentDraft.value !== originalDraft.value)
 const hasPendingVersionChanges = computed(() => previewContent.value !== baseVersionContent.value)
-const hasUnsavedChanges = computed(() => hasEditorDraftChanges.value || hasPendingVersionChanges.value)
 const datasetType = computed(() => {
   const value = String(dataset.value?.type || '').toLowerCase()
   return DATASET_TYPE_MAP[value] || dataset.value?.type || '-'
@@ -76,11 +78,28 @@ const storageType = computed(() => {
 const createdAt = computed(() => dataset.value?.create_time
   ? new Date(dataset.value.create_time).toLocaleString('zh-CN')
   : '-')
+const datasetSize = computed(() => formatMegabytes(
+  dataset.value?.size_bytes,
+  dataset.value?.size,
+))
+const selectedFileSize = computed(() => formatMegabytes(
+  selectedFile.value?.size_bytes,
+  selectedFile.value?.size,
+))
 
 function fileKey(file: DatasetFile) {
   return String(file.id || file.name)
 }
 
+const {
+  editorVisible, editingRecord, editFields, rawDraft, savingRecord,
+  hasEditorDraftChanges, openRecordEditor, resetRecordEditor, updateEditField,
+  closeRecordEditor, saveRecord, deleteRecord,
+} = useDatasetRecordEditor(selectedFile, isViewingActiveVersion, previewContent)
+const hasUnsavedChanges = computed(
+  () => hasEditorDraftChanges.value || hasPendingVersionChanges.value,
+)
+
 async function loadDataset() {
   loading.value = true
   try {
@@ -101,7 +120,10 @@ async function loadVersions(file: DatasetFile) {
   const requestId = ++versionRequestId
   try {
     const result = await getDatasetFileVersions(fileKey(file))
-    const activeContent = await getDatasetFileVersionContent(fileKey(file), result.active_version_id)
+    const [activeContent, sources] = await Promise.all([
+      getDatasetFileVersionContent(fileKey(file), result.active_version_id),
+      getDatasetFileRecordSources(fileKey(file)),
+    ])
     if (requestId !== versionRequestId) return
     versions.value = result.versions
     nextVersionNumber.value = result.next_version_number
@@ -111,9 +133,13 @@ async function loadVersions(file: DatasetFile) {
     loadedVersionId.value = result.active_version_id
     previewContent.value = activeContent.content
     baseVersionContent.value = activeContent.content
+    recordSources.value = sources.items || []
     resetRecordEditor()
   } catch {
-    if (requestId === versionRequestId) previewError.value = '版本内容加载失败，请稍后重试'
+    if (requestId === versionRequestId) {
+      recordSources.value = []
+      previewError.value = '版本内容加载失败，请稍后重试'
+    }
   } finally {
     if (requestId === versionRequestId) previewLoading.value = false
   }
@@ -221,40 +247,6 @@ async function deleteViewedVersion() {
   }
 }
 
-function openRecordEditor(record: DatasetRecord) {
-  if (!isViewingActiveVersion.value) {
-    ElMessage.warning('历史版本为只读，请先设为当前版本')
-    return
-  }
-  editingRecord.value = record
-  if (record.kind === 'object') {
-    editFields.value = Object.entries(record.value as Record<string, unknown>).map(([key, value]) => ({
-      key,
-      value: typeof value === 'string' ? value : JSON.stringify(value, null, 2),
-      isJson: typeof value !== 'string',
-    }))
-    rawDraft.value = ''
-  } else {
-    editFields.value = []
-    rawDraft.value = record.raw
-  }
-  editorVisible.value = true
-  originalDraft.value = record.kind === 'object' ? JSON.stringify(editFields.value) : rawDraft.value
-}
-
-function resetRecordEditor() {
-  editorVisible.value = false
-  editingRecord.value = null
-  editFields.value = []
-  rawDraft.value = ''
-  originalDraft.value = ''
-}
-
-function updateEditField(index: number, value: string) {
-  const field = editFields.value[index]
-  if (field) field.value = value
-}
-
 async function confirmDiscardChanges(message = '当前存在尚未保存为版本的修改，放弃后将无法恢复。') {
   if (!hasUnsavedChanges.value) return true
   try {
@@ -269,63 +261,6 @@ async function confirmDiscardChanges(message = '当前存在尚未保存为版
   }
 }
 
-async function confirmEditorDiscardChanges() {
-  if (!hasEditorDraftChanges.value) return true
-  try {
-    await ElMessageBox.confirm('当前样本存在未暂存修改，放弃后将无法恢复。', '确认放弃修改？', {
-      type: 'warning',
-      confirmButtonText: '放弃修改',
-      cancelButtonText: '继续编辑',
-    })
-    return true
-  } catch {
-    return false
-  }
-}
-
-async function closeRecordEditor(done?: () => void) {
-  if (savingRecord.value) return
-  if (!await confirmEditorDiscardChanges()) return
-  resetRecordEditor()
-  done?.()
-}
-
-function buildNextRecordValue() {
-  if (editingRecord.value?.kind !== 'object') return JSON.parse(rawDraft.value)
-  const nextValue: Record<string, unknown> = {}
-  for (const field of editFields.value) {
-    nextValue[field.key] = field.isJson ? JSON.parse(field.value) : field.value
-  }
-  return nextValue
-}
-
-async function saveRecord() {
-  if (!selectedFile.value || !editingRecord.value || savingRecord.value) return
-  const record = editingRecord.value
-  let nextValue: unknown
-  try {
-    nextValue = buildNextRecordValue()
-  } catch (error) {
-    ElMessage.error(`JSON 格式校验失败：${error instanceof Error ? error.message : '内容格式不正确'}`)
-    return
-  }
-
-  savingRecord.value = true
-  try {
-    const nextContent = updateDatasetRecord(
-      previewContent.value,
-      selectedFile.value.name,
-      record.sourceIndex,
-      nextValue,
-    )
-    previewContent.value = nextContent
-    resetRecordEditor()
-    ElMessage.success(`第 ${record.displayIndex} 条修改已暂存`)
-  } finally {
-    savingRecord.value = false
-  }
-}
-
 async function saveVersion() {
   if (
     !selectedFile.value
@@ -396,7 +331,7 @@ onBeforeUnmount(() => window.removeEventListener('beforeunload', handleBeforeUnl
 
     <section class="dataset-overview" aria-label="数据集概览">
       <div class="overview-item"><span>数据条数</span><strong>{{ (dataset?.count || 0).toLocaleString() }}</strong></div>
-      <div class="overview-item"><span>数据大小</span><strong>{{ dataset?.size || '-' }}</strong></div>
+      <div class="overview-item"><span>数据大小</span><strong>{{ datasetSize }}</strong></div>
       <div class="overview-item overview-item-wide"><span>创建时间</span><strong>{{ createdAt }}</strong></div>
     </section>
 
@@ -433,7 +368,7 @@ onBeforeUnmount(() => window.removeEventListener('beforeunload', handleBeforeUnl
             <div>
               <h2>{{ selectedFile?.name }}</h2>
               <p>
-                {{ selectedFile?.size || '未知大小' }} <span aria-hidden="true">·</span>
+                {{ selectedFileSize }} <span aria-hidden="true">·</span>
                 <template v-if="isRecordFile">{{ records.length.toLocaleString() }} 条记录</template>
                 <template v-else>{{ totalLines.toLocaleString() }} 行</template>
               </p>
@@ -470,6 +405,7 @@ onBeforeUnmount(() => window.removeEventListener('beforeunload', handleBeforeUnl
             :is-viewing-active-version="isViewingActiveVersion"
             :version-id="loadedVersionId"
             @edit="openRecordEditor"
+            @delete="deleteRecord"
           />
 
           <DatasetRawPreview

frontend/src/views/dataset/datasetRecords.ts

@@ -1,3 +1,5 @@
+import type { DatasetRecordSource } from '@/types'
+
 export type DatasetRecordKind = 'object' | 'primitive' | 'invalid'
 
 export interface DatasetRecord {
@@ -6,6 +8,8 @@ export interface DatasetRecord {
   raw: string
   kind: DatasetRecordKind
   value: unknown
+  sourceText?: string
+  sourceWasPreprocessed?: boolean
   error?: string
 }
 
@@ -15,6 +19,35 @@ export interface DatasetRecordResult {
   error?: string
 }
 
+/** 通过内容优先、物理行兜底，把发布样本重新关联到切片原文。 */
+export function attachDatasetRecordSources(
+  records: DatasetRecord[],
+  sources: DatasetRecordSource[],
+) {
+  const used = new Set<number>()
+  return records.map((record) => {
+    const value = record.kind === 'object'
+      ? record.value as Record<string, unknown>
+      : {}
+    let sourceIndex = sources.findIndex((source, index) => (
+      !used.has(index)
+      && source.instruction === String(value.instruction || '')
+      && source.input === String(value.input || '')
+      && source.output === String(value.output || '')
+    ))
+    if (sourceIndex < 0 && sources[record.sourceIndex] && !used.has(record.sourceIndex)) {
+      sourceIndex = record.sourceIndex
+    }
+    if (sourceIndex < 0) return record
+    used.add(sourceIndex)
+    return {
+      ...record,
+      sourceText: sources[sourceIndex]?.source_text || '',
+      sourceWasPreprocessed: sources[sourceIndex]?.preprocessed || false,
+    }
+  })
+}
+
 function isObjectRecord(value: unknown): value is Record<string, unknown> {
   return typeof value === 'object' && value !== null && !Array.isArray(value)
 }
@@ -119,3 +152,33 @@ export function updateDatasetRecord(
 
   throw new Error('当前文件不支持逐条编辑')
 }
+
+/** 删除目标样本；删除只修改当前草稿，仍需由调用方保存为新版本。 */
+export function deleteDatasetRecord(
+  content: string,
+  fileName: string,
+  sourceIndex: number,
+) {
+  const normalizedName = fileName.toLowerCase()
+  if (normalizedName.endsWith('.jsonl')) {
+    const lines = content.split('\n')
+    if (sourceIndex < 0 || sourceIndex >= lines.length || !lines[sourceIndex]?.trim()) {
+      throw new Error('目标样本不存在')
+    }
+    lines.splice(sourceIndex, 1)
+    return lines.join('\n')
+  }
+
+  if (normalizedName.endsWith('.json')) {
+    const root: unknown = JSON.parse(content)
+    if (Array.isArray(root)) {
+      if (sourceIndex < 0 || sourceIndex >= root.length) throw new Error('目标样本不存在')
+      root.splice(sourceIndex, 1)
+      return JSON.stringify(root, null, 2)
+    }
+    if (sourceIndex !== 0) throw new Error('目标样本不存在')
+    return '[]'
+  }
+
+  throw new Error('当前文件不支持逐条删除')
+}

frontend/src/views/dataset/preview/DatasetRecordTable.vue

@@ -10,6 +10,7 @@ const props = defineProps<{
 
 const emit = defineEmits<{
   edit: [record: DatasetRecord]
+  delete: [record: DatasetRecord]
 }>()
 
 const pageSize = 10
@@ -18,9 +19,18 @@ const currentPage = ref(1)
 
 const allTableFieldKeys = computed(() => {
   const keys = new Set<string>()
+  const sourceFieldKeys = new Set([
+    'source_text',
+    'source_content',
+    'original_text',
+    'original',
+    'source',
+  ])
   props.records.forEach((record) => {
     if (record.kind !== 'object') return
-    Object.keys(record.value as Record<string, unknown>).forEach((key) => keys.add(key))
+    Object.keys(record.value as Record<string, unknown>)
+      .filter((key) => !sourceFieldKeys.has(key))
+      .forEach((key) => keys.add(key))
   })
   const preferred = ['instruction', 'question', 'prompt', 'input', 'context', 'output', 'answer', 'response']
   return [...keys].sort((a, b) => {
@@ -69,6 +79,16 @@ function recordFieldValue(record: DatasetRecord, key: string) {
   return Object.prototype.hasOwnProperty.call(data, key) ? formatFieldValue(data[key]) : '-'
 }
 
+function recordSourceText(record: DatasetRecord) {
+  if (record.sourceText?.trim()) return record.sourceText
+  if (record.kind !== 'object') return '无关联原文'
+  const data = record.value as Record<string, unknown>
+  for (const key of ['source_text', 'source_content', 'original_text', 'original', 'source']) {
+    if (typeof data[key] === 'string' && data[key].trim()) return data[key]
+  }
+  return '无关联原文'
+}
+
 function extraFieldValue(record: DatasetRecord) {
   if (record.kind !== 'object') return '-'
   const data = record.value as Record<string, unknown>
@@ -144,6 +164,22 @@ function recordRowClassName({ row }: { row: unknown }) {
             </el-tooltip>
           </template>
         </el-table-column>
+        <el-table-column label="原文参照" min-width="280">
+          <template #default="{ row }">
+            <el-tooltip
+              :content="recordSourceText(asDatasetRecord(row))"
+              placement="top"
+              :show-after="400"
+            >
+              <div
+                class="table-cell-text source-reference-cell"
+                :class="{ 'is-empty': recordSourceText(asDatasetRecord(row)) === '无关联原文' }"
+              >
+                {{ recordSourceText(asDatasetRecord(row)) }}
+              </div>
+            </el-tooltip>
+          </template>
+        </el-table-column>
         <el-table-column v-if="hasExtraTableFields" label="其他字段" min-width="240">
           <template #default="{ row }">
             <el-tooltip
@@ -166,8 +202,9 @@ function recordRowClassName({ row }: { row: unknown }) {
             <el-tag v-else size="small" type="success">正常</el-tag>
           </template>
         </el-table-column>
-        <el-table-column label="操作" width="96" align="center" fixed="right">
+        <el-table-column label="操作" width="156" align="center" fixed="right">
           <template #default="{ row }">
+            <div class="record-actions">
               <el-button
                 type="primary"
                 link
@@ -179,6 +216,18 @@ function recordRowClassName({ row }: { row: unknown }) {
                 <i :class="asDatasetRecord(row).kind === 'invalid' ? 'fa fa-wrench' : 'fa fa-pencil'" />
                 {{ asDatasetRecord(row).kind === 'invalid' ? '修复' : '编辑' }}
               </el-button>
+              <el-button
+                type="danger"
+                link
+                :disabled="!isViewingActiveVersion"
+                :title="isViewingActiveVersion ? '' : '历史版本为只读，请先设为当前版本'"
+                :aria-label="`删除第 ${asDatasetRecord(row).displayIndex} 条数据`"
+                @click="emit('delete', asDatasetRecord(row))"
+              >
+                <i class="fa fa-trash-o" />
+                删除
+              </el-button>
+            </div>
           </template>
         </el-table-column>
       </el-table>
@@ -287,6 +336,21 @@ function recordRowClassName({ row }: { row: unknown }) {
   -webkit-line-clamp: 2;
 }
 
+.source-reference-cell {
+  color: #344054;
+}
+
+.source-reference-cell.is-empty {
+  color: #98a2b3;
+}
+
+.record-actions {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  white-space: nowrap;
+}
+
 .record-table .el-button i {
   margin-right: 5px;
 }

frontend/src/views/dataset/preview/useDatasetRecordEditor.ts

@@ -0,0 +1,174 @@
+import { computed, ref } from 'vue'
+import type { ComputedRef, Ref } from 'vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
+import {
+  deleteDatasetRecord,
+  updateDatasetRecord,
+} from '../datasetRecords'
+import type { DatasetRecord } from '../datasetRecords'
+import type { DatasetFile } from '@/types'
+import type { EditField } from './types'
+
+export function useDatasetRecordEditor(
+  selectedFile: ComputedRef<DatasetFile | undefined>,
+  isViewingActiveVersion: ComputedRef<boolean>,
+  previewContent: Ref<string>,
+) {
+  const editorVisible = ref(false)
+  const editingRecord = ref<DatasetRecord | null>(null)
+  const editFields = ref<EditField[]>([])
+  const rawDraft = ref('')
+  const originalDraft = ref('')
+  const savingRecord = ref(false)
+  const currentDraft = computed(() => editingRecord.value?.kind === 'object'
+    ? JSON.stringify(editFields.value)
+    : rawDraft.value)
+  const hasEditorDraftChanges = computed(
+    () => editorVisible.value && currentDraft.value !== originalDraft.value,
+  )
+
+  function resetRecordEditor() {
+    editorVisible.value = false
+    editingRecord.value = null
+    editFields.value = []
+    rawDraft.value = ''
+    originalDraft.value = ''
+  }
+
+  function openRecordEditor(record: DatasetRecord) {
+    if (!isViewingActiveVersion.value) {
+      ElMessage.warning('历史版本为只读，请先设为当前版本')
+      return
+    }
+    editingRecord.value = record
+    if (record.kind === 'object') {
+      editFields.value = Object.entries(record.value as Record<string, unknown>).map(
+        ([key, value]) => ({
+          key,
+          value: typeof value === 'string' ? value : JSON.stringify(value, null, 2),
+          isJson: typeof value !== 'string',
+        }),
+      )
+      rawDraft.value = ''
+    } else {
+      editFields.value = []
+      rawDraft.value = record.raw
+    }
+    editorVisible.value = true
+    originalDraft.value = record.kind === 'object'
+      ? JSON.stringify(editFields.value)
+      : rawDraft.value
+  }
+
+  function updateEditField(index: number, value: string) {
+    const field = editFields.value[index]
+    if (field) field.value = value
+  }
+
+  async function confirmEditorDiscardChanges() {
+    if (!hasEditorDraftChanges.value) return true
+    try {
+      await ElMessageBox.confirm(
+        '当前样本存在未暂存修改，放弃后将无法恢复。',
+        '确认放弃修改？',
+        {
+          type: 'warning',
+          confirmButtonText: '放弃修改',
+          cancelButtonText: '继续编辑',
+        },
+      )
+      return true
+    } catch {
+      return false
+    }
+  }
+
+  async function closeRecordEditor(done?: () => void) {
+    if (savingRecord.value || !await confirmEditorDiscardChanges()) return
+    resetRecordEditor()
+    done?.()
+  }
+
+  function buildNextRecordValue() {
+    if (editingRecord.value?.kind !== 'object') return JSON.parse(rawDraft.value)
+    const nextValue: Record<string, unknown> = {}
+    for (const field of editFields.value) {
+      nextValue[field.key] = field.isJson ? JSON.parse(field.value) : field.value
+    }
+    return nextValue
+  }
+
+  async function saveRecord() {
+    if (!selectedFile.value || !editingRecord.value || savingRecord.value) return
+    const record = editingRecord.value
+    let nextValue: unknown
+    try {
+      nextValue = buildNextRecordValue()
+    } catch (error) {
+      ElMessage.error(`JSON 格式校验失败：${error instanceof Error ? error.message : '内容格式不正确'}`)
+      return
+    }
+
+    savingRecord.value = true
+    try {
+      previewContent.value = updateDatasetRecord(
+        previewContent.value,
+        selectedFile.value.name,
+        record.sourceIndex,
+        nextValue,
+      )
+      resetRecordEditor()
+      ElMessage.success(`第 ${record.displayIndex} 条修改已暂存`)
+    } finally {
+      savingRecord.value = false
+    }
+  }
+
+  async function deleteRecord(record: DatasetRecord) {
+    if (!selectedFile.value || !isViewingActiveVersion.value) {
+      ElMessage.warning('历史版本为只读，请先设为当前版本')
+      return
+    }
+    try {
+      await ElMessageBox.confirm(
+        '删除后将暂存到当前草稿，点击“保存版本”后正式生效。',
+        `删除第 ${record.displayIndex} 条数据？`,
+        {
+          type: 'warning',
+          confirmButtonText: '删除',
+          cancelButtonText: '取消',
+          confirmButtonClass: 'el-button--danger',
+        },
+      )
+    } catch {
+      return
+    }
+
+    try {
+      previewContent.value = deleteDatasetRecord(
+        previewContent.value,
+        selectedFile.value.name,
+        record.sourceIndex,
+      )
+      resetRecordEditor()
+      ElMessage.success(`第 ${record.displayIndex} 条已删除，请保存为新版本`)
+    } catch (error) {
+      ElMessage.error(error instanceof Error ? error.message : '删除失败')
+    }
+  }
+
+  return {
+    editorVisible,
+    editingRecord,
+    editFields,
+    rawDraft,
+    savingRecord,
+    hasEditorDraftChanges,
+    openRecordEditor,
+    resetRecordEditor,
+    updateEditField,
+    closeRecordEditor,
+    saveRecord,
+    deleteRecord,
+  }
+}