feat: add spreadsheet async imports

2026-06-29 08:00:17 +08:00
parent 78a26d1df2
commit eee21f6eed
27 changed files with 2972 additions and 267 deletions
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@
 - Supabase/PostgreSQL 多租户数据库 schema、RLS、索引、触发器。
 - `apps/api` 独立业务 API，后续供 H5、Taro 小程序、管理后台统一调用；已支持 Supabase Auth JWT 和迁移期 `tk_` session 双入口。
 - 租户后台能力：品牌、域名、公开设置、支付账户、登录配置、私密密钥掩码、活动内容、考试日期、题目反馈处理、激活码、优惠券、勋章管理/发放、成员权限、自定义角色模板、班级/教师/学生范围权限、学生批量导入、批量分班、学生备注、跟进任务、审计日志。
- 租户内容能力：可配置题库入口、任意深度分类树、考试意向标记、题目集合、顺序/随机/全真模拟蓝图、题目录入/更新、视频绑定、分数线、单词、知识手册、资料资源台账、题目/单词/知识手册/分数线/视频 JSON 批量导入。
+- 租户内容能力：可配置题库入口、任意深度分类树、考试意向标记、题目集合、顺序/随机/全真模拟蓝图、题目录入/更新、视频绑定、分数线、单词、知识手册、资料资源台账、题目/单词/知识手册/分数线/视频 JSON/CSV/Excel 批量导入。
 - 学生端能力：题库入口、分类树、题目集合、顺序/随机/模考 session 组卷快照、答题、错题本、收藏夹、背单词进度、个人中心、勋章、考试倒计时、签到积分、题目反馈、排行榜、分数线、题目视频、订单详情/状态轮询、优惠券领取/抵扣、权益、激活码预检查/兑换、资料下载。
 - 平台后台能力：租户管理、SaaS 套餐、订阅、账单、服务费收款、用量记录。
 - 销售/代理/CRM 增长链路：邀请码、扫码/分享事件、首绑客资保护、销售统计、团队关系、CRM 配置和队列。
@@ -28,7 +28,7 @@
 - Supabase Auth/JWT、租户角色模板、班级/教师/学生范围权限已可联调；生产前还要做真实云端 Auth/JWKS 回归和 RLS 深测。
 - 阿里云/腾讯云短信、微信小程序登录、微信支付、支付宝主链路、微信/支付宝发起退款/查询确认/退款通知、支付/退款补偿 worker 已完成本地适配；微信网页登录、QQ 登录、手机号换绑、完整资金流水对账和真实生产账号联调还没接完。
 - OSS/COS/Supabase Storage 上传下载签名 provider 已接入；上传后校验、PDF/图片预览和资源复检 worker 已完成，CDN 防盗链、杀毒扫描和视频动态水印还没完成。
- Excel/CSV 导入和大批量异步导入 worker 还没完成；分数线/视频 JSON 批量导入已可联调。
+- Excel/CSV 导入解析已完成并复用 `content_import_jobs/items/issues` 管线；大批量异步导入 worker 基础已接入，支持 queued job 消费、重试和审计；导入后复检和模板下载/字段映射 UI 还没完成。
 - 勋章管理/手动发放已可联调；自动发放规则、积分活动联动、分佣真实打款、结算导出、发票/凭证、CRM 轮询/定向分配、富卡片模板、失败告警和销售转化看板还没完成。
 - Taro 跨端前端还没开始 scaffold。
 - 根目录已清理为新 Supabase SaaS monorepo 编排层；旧 PocketBase/React 项目和旧构建产物仅保留在 `参考/` 目录作为迁移参考，不进入 Git 提交。
@@ -107,6 +107,12 @@ npm --workspace @tiku-saas/worker run commerce:once
 npm --workspace @tiku-saas/worker run assets:once
 ```

+单次运行内容导入 worker：
+
+```bash
+npm --workspace @tiku-saas/worker run imports:once
+```
+
 默认本地数据库：

 ```text
@@ -147,6 +153,7 @@ npm run test:api
 npm run test:worker:crm
 npm run test:worker:commerce
 npm run test:worker:assets
+npm run test:worker:imports
 ```

 ## API 模块
@@ -186,7 +193,7 @@ API 身份上下文：
 - 商户密钥、短信密钥、OAuth app secret 等必须进入 `app_private.tenant_secrets`，或后续生产 KMS/Vault。
 - 资料、PDF、视频等资源必须先进入 `content_assets` 台账，再由 API 校验权限并下发签名 URL；生产环境应定时运行 assets worker 复检对象元数据，异常资源会被标记 failed 并退回 draft。
 - 题库入口和分类使用 `content_entries/content_nodes`；题目列表和练习规则使用 `question_collections/practice_blueprints`，前端不要再把旧树字段当成唯一业务结构。
- 批量导入必须先写 `content_import_jobs/items/issues`，保留原始 payload、规范化 payload、逐行问题和审计记录。题目、单词、知识手册、分数线和视频 JSON 导入已走这套后台校验管线，前端只做预检查和预览展示。
+- 批量导入必须先写 `content_import_jobs/items/issues`，保留原始 payload、规范化 payload、逐行问题和审计记录。题目、单词、知识手册、分数线和视频 JSON/CSV/Excel 导入已走这套后台校验管线；大批量任务可提交 `executionMode=async`，由 imports worker 消费，前端只轮询 job 状态和展示 issues。
 - 支付 webhook 必须先设计幂等键和验签流程，再进入生产使用；生产环境还应定时运行 commerce worker 兜底供应商漏通知和处理中退款。

 ## 最近一次验证
@@ -206,5 +213,5 @@ npm run check:refactor
 1. 真实云端 Auth/JWKS 回归、RLS 深测和生产环境配置验收。
 2. Taro 前端 scaffold，让 H5 和小程序共用同一套 API。
 3. 对象存储 CDN 防盗链、杀毒扫描、视频动态水印和生命周期策略。
-4. Excel/CSV 导入；把现有 JSON 导入升级为可排队异步执行。
+4. 导入后复检、题库导出 PDF/Word/JSON、模板下载和字段映射 UI。
 5. 微信网页/QQ 登录、完整资金流水对账、公共题库版本同步 worker、积分活动深化，以及排行榜防刷/预聚合。
--- a/apps/api/package.json
+++ b/apps/api/package.json
@@ -12,6 +12,7 @@
  "dependencies": {
    "@supabase/storage-js": "^2.108.2",
    "ali-oss": "^6.23.0",
+    "exceljs": "^4.4.0",
    "jose": "^6.2.3",
    "pg": "^8.16.3"
  },
--- a/apps/api/src/core/db.ts
+++ b/apps/api/src/core/db.ts
@@ -1,9 +1,9 @@
 import type pg from 'pg';
 import { createPool, query as runQuery, queryOne as runQueryOne } from '../../../../packages/db/src/index.js';
-import { config } from './config.js';
+import { DEFAULT_DATABASE_URL } from '../../../../packages/config/src/index.js';

 export const pool = createPool({
-  connectionString: config.databaseUrl,
+  connectionString: process.env.DATABASE_URL || DEFAULT_DATABASE_URL,
  max: 10,
 });

--- a/apps/api/src/core/errors.ts
+++ b/apps/api/src/core/errors.ts
@@ -0,0 +1,9 @@
+export class HttpError extends Error {
+  constructor(
+    public readonly statusCode: number,
+    message: string,
+    public readonly code = 'HTTP_ERROR',
+  ) {
+    super(message);
+  }
+}
--- a/apps/api/src/core/http.ts
+++ b/apps/api/src/core/http.ts
@@ -1,6 +1,9 @@
 import type { IncomingMessage, ServerResponse } from 'node:http';
 import { URL } from 'node:url';
 import { config } from './config.js';
+import { HttpError } from './errors.js';
+
+export { HttpError } from './errors.js';

 export interface RequestContext {
  req: IncomingMessage;
@@ -10,16 +13,6 @@ export interface RequestContext {

 export type Handler = (ctx: RequestContext) => Promise<unknown>;

-export class HttpError extends Error {
-  constructor(
-    public readonly statusCode: number,
-    message: string,
-    public readonly code = 'HTTP_ERROR',
-  ) {
-    super(message);
-  }
-}
-
 export function sendJson(res: ServerResponse, statusCode: number, body: unknown) {
  res.statusCode = statusCode;
  res.setHeader('content-type', 'application/json; charset=utf-8');
--- a/apps/api/src/features/tenant-content/import-spreadsheet.ts
+++ b/apps/api/src/features/tenant-content/import-spreadsheet.ts
@@ -0,0 +1,739 @@
+import { Buffer } from 'node:buffer';
+import ExcelJS from 'exceljs';
+import { HttpError } from '../../core/http.js';
+
+type JsonObject = Record<string, unknown>;
+type SpreadsheetImportType = 'questions' | 'vocabulary' | 'handbook' | 'scoreline' | 'videos';
+type SupportedSpreadsheetFormat = 'json' | 'csv' | 'excel';
+
+interface ParsedSpreadsheet {
+  rows: JsonObject[];
+  sheets: Record<string, JsonObject[]>;
+  metadata: JsonObject;
+}
+
+const MAX_SPREADSHEET_ROWS = 5000;
+const MAX_SPREADSHEET_COLUMNS = 160;
+const MAX_SPREADSHEET_CELL_CHARS = 100_000;
+const MAX_EXCEL_FILE_BYTES = 8 * 1024 * 1024;
+
+const QUESTION_OPTION_KEYS = ['optionA', 'optionB', 'optionC', 'optionD', 'optionE', 'optionF', 'optionG', 'optionH'];
+
+function objectValue(value: unknown): JsonObject {
+  return value && typeof value === 'object' && !Array.isArray(value) ? value as JsonObject : {};
+}
+
+function stringValue(value: unknown) {
+  return typeof value === 'string' && value.trim() ? value.trim() : '';
+}
+
+function normalizedKey(value: string) {
+  return value
+    .trim()
+    .toLowerCase()
+    .replace(/[\s_\-./\\:：()（）[\]【】]/g, '');
+}
+
+function sourceFormatValue(value: unknown): SupportedSpreadsheetFormat {
+  const raw = stringValue(value).toLowerCase();
+  if (!raw || raw === 'json') return 'json';
+  if (raw === 'csv') return 'csv';
+  if (['excel', 'xlsx'].includes(raw)) return 'excel';
+  throw new HttpError(400, 'sourceFormat must be json, csv, or excel', 'IMPORT_FORMAT_NOT_SUPPORTED');
+}
+
+function assertRowLimit(count: number) {
+  if (count > MAX_SPREADSHEET_ROWS) {
+    throw new HttpError(400, `Spreadsheet import can contain at most ${MAX_SPREADSHEET_ROWS} rows`, 'IMPORT_TOO_LARGE');
+  }
+}
+
+function decodeBase64File(body: JsonObject) {
+  const raw = stringValue(body.fileBase64 ?? body.excelBase64 ?? body.csvBase64);
+  if (!raw) return null;
+  const base64 = raw.includes(',') ? raw.slice(raw.indexOf(',') + 1) : raw;
+  let buffer: Buffer;
+  try {
+    buffer = Buffer.from(base64, 'base64');
+  } catch {
+    throw new HttpError(400, 'fileBase64 must be a valid base64 string', 'IMPORT_FILE_BASE64_INVALID');
+  }
+  if (!buffer.length) {
+    throw new HttpError(400, 'fileBase64 is empty', 'IMPORT_FILE_EMPTY');
+  }
+  if (buffer.length > MAX_EXCEL_FILE_BYTES) {
+    throw new HttpError(400, `Import file can be at most ${MAX_EXCEL_FILE_BYTES} bytes`, 'IMPORT_FILE_TOO_LARGE');
+  }
+  return buffer;
+}
+
+function primitiveCellValue(value: unknown): unknown {
+  if (value === undefined || value === null) return undefined;
+  if (value instanceof Date) return value.toISOString();
+  if (typeof value === 'number' || typeof value === 'boolean') return value;
+  if (typeof value === 'string') {
+    const trimmed = value.trim();
+    return trimmed.length > MAX_SPREADSHEET_CELL_CHARS ? trimmed.slice(0, MAX_SPREADSHEET_CELL_CHARS) : trimmed;
+  }
+  if (typeof value === 'object') {
+    const cell = value as {
+      text?: string;
+      result?: unknown;
+      formula?: string;
+      richText?: Array<{ text?: string }>;
+      hyperlink?: string;
+    };
+    if (cell.result !== undefined) return primitiveCellValue(cell.result);
+    if (Array.isArray(cell.richText)) return cell.richText.map(part => part.text || '').join('');
+    if (cell.text !== undefined) return primitiveCellValue(cell.text);
+    if (cell.hyperlink !== undefined) return primitiveCellValue(cell.hyperlink);
+  }
+  return String(value);
+}
+
+function parseJsonLike(value: unknown): unknown {
+  if (typeof value !== 'string') return value;
+  const trimmed = value.trim();
+  if (!trimmed) return undefined;
+  if (
+    (trimmed.startsWith('[') && trimmed.endsWith(']')) ||
+    (trimmed.startsWith('{') && trimmed.endsWith('}'))
+  ) {
+    try {
+      return JSON.parse(trimmed);
+    } catch {
+      return trimmed;
+    }
+  }
+  return trimmed;
+}
+
+function splitList(value: unknown) {
+  const parsed = parseJsonLike(value);
+  if (Array.isArray(parsed)) return parsed.map(item => String(item).trim()).filter(Boolean);
+  if (parsed === undefined || parsed === null) return [];
+  return String(parsed)
+    .split(/[|,，;；\n]/)
+    .map(item => item.trim())
+    .filter(Boolean);
+}
+
+function parseBooleanLike(value: unknown): unknown {
+  if (typeof value === 'boolean') return value;
+  if (typeof value !== 'string') return value;
+  const normalized = value.trim().toLowerCase();
+  if (['true', '1', 'yes', 'y', '是', '启用', '有效'].includes(normalized)) return true;
+  if (['false', '0', 'no', 'n', '否', '禁用', '无效'].includes(normalized)) return false;
+  return value;
+}
+
+function parseNumericLike(value: unknown): unknown {
+  if (typeof value !== 'string') return value;
+  const trimmed = value.trim();
+  if (!trimmed) return undefined;
+  if (!/^-?\d+(\.\d+)?$/.test(trimmed)) return value;
+  const parsed = Number(trimmed);
+  return Number.isFinite(parsed) ? parsed : value;
+}
+
+function coerceValue(key: string, value: unknown) {
+  if (value === undefined || value === null || value === '') return undefined;
+  if ([
+    'options',
+    'tags',
+    'correctOptionIndices',
+    'knowledgeTags',
+  ].includes(key)) {
+    return splitList(value);
+  }
+  if (['subQuestions', 'examMarkers', 'metadata', 'fieldValues', 'bindings'].includes(key)) {
+    return parseJsonLike(value);
+  }
+  if (['isActive', 'isHot', 'isFilter', 'isRequired', 'isVisible', 'isTrend', 'hasRestriction', 'isGeneral'].includes(key)) {
+    return parseBooleanLike(value);
+  }
+  if ([
+    'difficulty',
+    'order',
+    'sortOrder',
+    'duration',
+    'durationSeconds',
+    'freePreviewSeconds',
+    'year',
+    'wordCount',
+  ].includes(key)) {
+    return parseNumericLike(value);
+  }
+  return parseJsonLike(value);
+}
+
+function commonHeaderAlias(header: string) {
+  const key = normalizedKey(header);
+  const aliases: Record<string, string> = {
+    id: 'legacyId',
+    legacyid: 'legacyId',
+    legacy_id: 'legacyId',
+    externalid: 'legacyId',
+    external_id: 'legacyId',
+    旧id: 'legacyId',
+    原id: 'legacyId',
+    外部id: 'legacyId',
+    排序: 'order',
+    sort: 'order',
+    sortorder: 'order',
+    sort_order: 'order',
+    是否启用: 'isActive',
+    状态: 'isActive',
+    标签: 'tags',
+    tags: 'tags',
+    metadata: 'metadata',
+    元数据: 'metadata',
+  };
+  return aliases[key] || null;
+}
+
+function importHeaderAlias(header: string, importType: SpreadsheetImportType) {
+  const key = normalizedKey(header);
+  const common = commonHeaderAlias(header);
+  const aliases: Record<SpreadsheetImportType, Record<string, string>> = {
+    questions: {
+      type: 'type',
+      questiontype: 'type',
+      题型: 'type',
+      typelabel: 'typeLabel',
+      题型名称: 'typeLabel',
+      content: 'content',
+      title: 'content',
+      题目: 'content',
+      题干: 'content',
+      问题: 'content',
+      选项: 'options',
+      options: 'options',
+      a: 'optionA',
+      选项a: 'optionA',
+      optiona: 'optionA',
+      b: 'optionB',
+      选项b: 'optionB',
+      optionb: 'optionB',
+      c: 'optionC',
+      选项c: 'optionC',
+      optionc: 'optionC',
+      d: 'optionD',
+      选项d: 'optionD',
+      optiond: 'optionD',
+      e: 'optionE',
+      选项e: 'optionE',
+      optione: 'optionE',
+      f: 'optionF',
+      选项f: 'optionF',
+      optionf: 'optionF',
+      answer: 'answer',
+      correctanswer: 'answer',
+      correct: 'answer',
+      答案: 'answer',
+      正确答案: 'answer',
+      正确选项: 'answer',
+      correctoptionindices: 'correctOptionIndices',
+      correct_option_indices: 'correctOptionIndices',
+      explanation: 'explanation',
+      解析: 'explanation',
+      答案解析: 'explanation',
+      difficulty: 'difficulty',
+      难度: 'difficulty',
+      mediaurl: 'mediaUrl',
+      图片: 'mediaUrl',
+      subquestions: 'subQuestions',
+      子题: 'subQuestions',
+      exammarkers: 'examMarkers',
+      考试标记: 'examMarkers',
+    },
+    vocabulary: {
+      unitlegacyid: 'unitLegacyId',
+      unitid: 'unitLegacyId',
+      单元id: 'unitLegacyId',
+      unitname: 'unitName',
+      unit: 'unitName',
+      单元: 'unitName',
+      单元名称: 'unitName',
+      unitdescription: 'unitDescription',
+      单元描述: 'unitDescription',
+      unitorder: 'unitOrder',
+      单元排序: 'unitOrder',
+      wordlegacyid: 'wordLegacyId',
+      wordid: 'wordLegacyId',
+      单词id: 'wordLegacyId',
+      word: 'word',
+      单词: 'word',
+      phonetic: 'phonetic',
+      pronunciation: 'phonetic',
+      音标: 'phonetic',
+      meaning: 'meaning',
+      translation: 'meaning',
+      definition: 'meaning',
+      释义: 'meaning',
+      中文: 'meaning',
+      意思: 'meaning',
+      example: 'example',
+      例句: 'example',
+      exampletranslation: 'exampleTranslation',
+      例句翻译: 'exampleTranslation',
+      difficulty: 'difficulty',
+      难度: 'difficulty',
+    },
+    handbook: {
+      subjectlegacyid: 'subjectLegacyId',
+      subjectid: 'subjectLegacyId',
+      科目id: 'subjectLegacyId',
+      subjectname: 'subjectName',
+      subject: 'subjectName',
+      科目: 'subjectName',
+      手册: 'subjectName',
+      chapterlegacyid: 'chapterLegacyId',
+      chapterid: 'chapterLegacyId',
+      章节id: 'chapterLegacyId',
+      chaptername: 'chapterName',
+      chapter: 'chapterName',
+      章节: 'chapterName',
+      sectionlegacyid: 'sectionLegacyId',
+      sectionid: 'sectionLegacyId',
+      小节id: 'sectionLegacyId',
+      sectionname: 'sectionName',
+      section: 'sectionName',
+      小节: 'sectionName',
+      entrylegacyid: 'entryLegacyId',
+      entryid: 'entryLegacyId',
+      知识点id: 'entryLegacyId',
+      title: 'title',
+      标题: 'title',
+      知识点: 'title',
+      content: 'content',
+      正文: 'content',
+      内容: 'content',
+      summary: 'summary',
+      摘要: 'summary',
+    },
+    scoreline: {
+      kind: 'kind',
+      itemtype: 'kind',
+      类型: 'kind',
+      fieldkey: 'fieldKey',
+      字段key: 'fieldKey',
+      fieldname: 'fieldName',
+      字段名: 'fieldName',
+      fieldtype: 'fieldType',
+      字段类型: 'fieldType',
+      unit: 'unit',
+      单位: 'unit',
+      schoolid: 'schoolId',
+      院校id: 'schoolId',
+      schoollegacyid: 'schoolLegacyId',
+      schoolname: 'schoolName',
+      school: 'schoolName',
+      学校: 'schoolName',
+      院校: 'schoolName',
+      majorid: 'majorId',
+      专业id: 'majorId',
+      majorlegacyid: 'majorLegacyId',
+      majorname: 'majorName',
+      major: 'majorName',
+      专业: 'majorName',
+      year: 'year',
+      年份: 'year',
+      fieldvalues: 'fieldValues',
+      动态字段: 'fieldValues',
+      最低分: 'minScore',
+      录取分: 'minScore',
+      计划数: 'planCount',
+      招生计划: 'planCount',
+    },
+    videos: {
+      title: 'title',
+      name: 'title',
+      视频标题: 'title',
+      标题: 'title',
+      description: 'description',
+      描述: 'description',
+      videourl: 'videoUrl',
+      url: 'videoUrl',
+      视频地址: 'videoUrl',
+      thumbnailurl: 'thumbnailUrl',
+      封面: 'thumbnailUrl',
+      duration: 'durationSeconds',
+      durationseconds: 'durationSeconds',
+      时长: 'durationSeconds',
+      subjectid: 'subjectId',
+      科目id: 'subjectId',
+      questionid: 'questionId',
+      题目id: 'questionId',
+      legacyquestionid: 'legacyQuestionId',
+      旧题目id: 'legacyQuestionId',
+      assetid: 'assetId',
+      资源id: 'assetId',
+      accessmode: 'accessMode',
+      访问模式: 'accessMode',
+      knowledgetags: 'knowledgeTags',
+      知识点标签: 'knowledgeTags',
+      bindings: 'bindings',
+      绑定题目: 'bindings',
+    },
+  };
+  return aliases[importType][key] || common || header.trim();
+}
+
+function normalizeSpreadsheetRow(raw: JsonObject, importType: SpreadsheetImportType) {
+  const row: JsonObject = {};
+  for (const [header, value] of Object.entries(raw)) {
+    const key = importHeaderAlias(header, importType);
+    let coerced = coerceValue(key, value);
+    if (importType === 'scoreline' && key === header.trim()) {
+      coerced = parseNumericLike(coerced);
+    }
+    if (coerced !== undefined && coerced !== '') row[key] = coerced;
+  }
+
+  if (importType === 'questions') {
+    const options = QUESTION_OPTION_KEYS.map(key => row[key]).filter(value => value !== undefined && value !== '');
+    if (!row.options && options.length) row.options = options;
+    if (!row.correctOptionIndices && row.answer) {
+      row.correctOptionIndices = parseAnswerIndices(row.answer, Array.isArray(row.options) ? row.options.length : 0);
+    }
+  }
+
+  if (importType === 'vocabulary') {
+    if (row.wordLegacyId && !row.legacyId) row.legacyId = row.wordLegacyId;
+    if (row.unitOrder && !row.order && !row.word) row.order = row.unitOrder;
+  }
+
+  if (importType === 'handbook') {
+    if (row.entryLegacyId && !row.legacyId) row.legacyId = row.entryLegacyId;
+  }
+
+  return row;
+}
+
+function parseAnswerIndices(value: unknown, optionCount: number) {
+  const parts = splitList(value);
+  const indices: number[] = [];
+  for (const part of parts) {
+    const upper = String(part).trim().toUpperCase();
+    if (/^[A-H]$/.test(upper)) {
+      indices.push(upper.charCodeAt(0) - 65);
+      continue;
+    }
+    const parsed = Number(upper);
+    if (Number.isFinite(parsed)) {
+      const integer = Math.trunc(parsed);
+      indices.push(integer === 0 ? 0 : optionCount > 0 && integer <= optionCount ? integer - 1 : integer);
+    }
+  }
+  return [...new Set(indices)];
+}
+
+function parseCsv(text: string, delimiter: string) {
+  const rows: string[][] = [];
+  let row: string[] = [];
+  let current = '';
+  let quoted = false;
+  for (let index = 0; index < text.length; index += 1) {
+    const char = text[index];
+    const next = text[index + 1];
+    if (quoted) {
+      if (char === '"' && next === '"') {
+        current += '"';
+        index += 1;
+      } else if (char === '"') {
+        quoted = false;
+      } else {
+        current += char;
+      }
+      continue;
+    }
+    if (char === '"') {
+      quoted = true;
+    } else if (char === delimiter) {
+      row.push(current);
+      current = '';
+    } else if (char === '\n') {
+      row.push(current);
+      rows.push(row);
+      row = [];
+      current = '';
+    } else if (char !== '\r') {
+      current += char;
+    }
+  }
+  row.push(current);
+  rows.push(row);
+  return rows.filter(item => item.some(cell => cell.trim()));
+}
+
+function autoDelimiter(text: string) {
+  const sample = text.slice(0, 4096);
+  const candidates = [',', '\t', ';'];
+  return candidates
+    .map(delimiter => ({ delimiter, count: (sample.match(new RegExp(delimiter === '\t' ? '\\t' : delimiter, 'g')) || []).length }))
+    .sort((left, right) => right.count - left.count)[0]?.delimiter || ',';
+}
+
+function rowsFromMatrix(matrix: string[][], importType: SpreadsheetImportType) {
+  if (matrix.length < 2) return [];
+  const headers = matrix[0].map((header, index) => stringValue(header) || `column${index + 1}`);
+  if (headers.length > MAX_SPREADSHEET_COLUMNS) {
+    throw new HttpError(400, `Spreadsheet can contain at most ${MAX_SPREADSHEET_COLUMNS} columns`, 'IMPORT_TOO_MANY_COLUMNS');
+  }
+  const rows = matrix.slice(1).map(line => {
+    const row: JsonObject = {};
+    headers.forEach((header, index) => {
+      const value = stringValue(line[index]);
+      if (value) row[header] = value;
+    });
+    return normalizeSpreadsheetRow(row, importType);
+  }).filter(row => Object.keys(row).length > 0);
+  assertRowLimit(rows.length);
+  return rows;
+}
+
+function parseCsvBody(body: JsonObject, importType: SpreadsheetImportType): ParsedSpreadsheet {
+  const buffer = decodeBase64File(body);
+  const text = stringValue(body.csvText ?? body.text ?? body.fileContent ?? body.payload) || buffer?.toString('utf8') || '';
+  if (!text.trim()) {
+    throw new HttpError(400, 'CSV import requires csvText, fileContent, payload, or fileBase64', 'CSV_CONTENT_REQUIRED');
+  }
+  const delimiter = stringValue(body.delimiter) || autoDelimiter(text);
+  const rows = rowsFromMatrix(parseCsv(text, delimiter), importType);
+  return {
+    rows,
+    sheets: { csv: rows },
+    metadata: {
+      parser: 'csv',
+      delimiter: delimiter === '\t' ? 'tab' : delimiter,
+      rowCount: rows.length,
+    },
+  };
+}
+
+function worksheetRows(worksheet: ExcelJS.Worksheet, importType: SpreadsheetImportType) {
+  const matrix: string[][] = [];
+  worksheet.eachRow({ includeEmpty: false }, row => {
+    const values: string[] = [];
+    const max = Math.min(row.cellCount, MAX_SPREADSHEET_COLUMNS);
+    for (let col = 1; col <= max; col += 1) {
+      const value = primitiveCellValue(row.getCell(col).value);
+      values.push(value === undefined || value === null ? '' : String(value));
+    }
+    if (values.some(value => value.trim())) matrix.push(values);
+  });
+  return rowsFromMatrix(matrix, importType);
+}
+
+async function parseExcelBody(body: JsonObject, importType: SpreadsheetImportType): Promise<ParsedSpreadsheet> {
+  const buffer = decodeBase64File(body);
+  if (!buffer) {
+    throw new HttpError(400, 'Excel import requires fileBase64', 'EXCEL_FILE_REQUIRED');
+  }
+  const workbook = new ExcelJS.Workbook();
+  try {
+    await workbook.xlsx.load(buffer as unknown as Parameters<typeof workbook.xlsx.load>[0]);
+  } catch {
+    throw new HttpError(400, 'Excel file could not be parsed as .xlsx', 'EXCEL_PARSE_FAILED');
+  }
+
+  const sheetName = stringValue(body.sheetName);
+  const sheetIndex = Number(body.sheetIndex ?? 1);
+  let selected: ExcelJS.Worksheet | undefined;
+  if (sheetName) selected = workbook.getWorksheet(sheetName);
+  else if (Number.isFinite(sheetIndex) && sheetIndex > 0) selected = workbook.getWorksheet(Math.trunc(sheetIndex));
+  selected = selected || workbook.worksheets.find(sheet => sheet.actualRowCount > 0);
+  if (!selected) {
+    throw new HttpError(400, 'Excel file has no non-empty worksheet', 'EXCEL_SHEET_EMPTY');
+  }
+
+  const sheets: Record<string, JsonObject[]> = {};
+  let totalRows = 0;
+  for (const sheet of workbook.worksheets) {
+    if (sheet.actualRowCount === 0) continue;
+    const rows = worksheetRows(sheet, importType);
+    sheets[normalizedKey(sheet.name)] = rows;
+    totalRows += rows.length;
+  }
+  assertRowLimit(totalRows);
+
+  const selectedRows = sheets[normalizedKey(selected.name)] || [];
+  return {
+    rows: selectedRows,
+    sheets,
+    metadata: {
+      parser: 'exceljs',
+      workbookSheetCount: workbook.worksheets.length,
+      selectedSheet: selected.name,
+      rowCount: selectedRows.length,
+      totalParsedRows: totalRows,
+    },
+  };
+}
+
+function sheetRows(parsed: ParsedSpreadsheet, names: string[]) {
+  for (const name of names) {
+    const rows = parsed.sheets[normalizedKey(name)];
+    if (rows?.length) return rows;
+  }
+  return [];
+}
+
+function stableLegacyId(value: unknown, fallback: string) {
+  return stringValue(value) || fallback;
+}
+
+function buildVocabularyPayload(parsed: ParsedSpreadsheet) {
+  const explicitUnitRows = sheetRows(parsed, ['units', 'vocabulary_units', '单元', '单词单元']);
+  const explicitWordRows = sheetRows(parsed, ['words', 'vocabulary', 'vocabulary_words', '单词', '词汇']);
+  const rows = explicitWordRows.length || explicitUnitRows.length ? [...explicitUnitRows, ...explicitWordRows] : parsed.rows;
+  const units = new Map<string, JsonObject & { words: JsonObject[] }>();
+
+  for (const row of rows) {
+    const rowType = String(row.rowType ?? row.kind ?? row.type ?? '').toLowerCase();
+    const hasWord = Boolean(row.word);
+    const unitName = stringValue(row.unitName ?? row.unit) || '默认单词单元';
+    const unitKey = stableLegacyId(row.unitLegacyId ?? row.unitId, unitName);
+    const unit = units.get(unitKey) || {
+      legacyId: unitKey,
+      name: unitName,
+      description: row.unitDescription ?? row.description ?? null,
+      order: row.unitOrder ?? row.order ?? units.size + 1,
+      isActive: row.isActive ?? true,
+      words: [],
+    };
+    if (rowType.includes('unit') && !hasWord) {
+      unit.name = unitName;
+      unit.description = row.unitDescription ?? row.description ?? unit.description;
+      unit.order = row.unitOrder ?? row.order ?? unit.order;
+      unit.isActive = row.isActive ?? unit.isActive;
+    }
+    if (hasWord) {
+      const word = { ...row };
+      word.legacyId = row.wordLegacyId ?? row.legacyId ?? null;
+      delete word.unitLegacyId;
+      delete word.unitId;
+      delete word.unitName;
+      delete word.unitDescription;
+      delete word.unitOrder;
+      delete word.wordLegacyId;
+      unit.words.push(word);
+    }
+    units.set(unitKey, unit);
+  }
+
+  return { units: Array.from(units.values()) };
+}
+
+function getOrCreateNested<T extends JsonObject>(
+  map: Map<string, T>,
+  key: string,
+  create: () => T,
+) {
+  const existing = map.get(key);
+  if (existing) return existing;
+  const created = create();
+  map.set(key, created);
+  return created;
+}
+
+function buildHandbookPayload(parsed: ParsedSpreadsheet) {
+  const rows = sheetRows(parsed, ['entries', 'handbook', '知识点', '手册']) || parsed.rows;
+  const subjectMap = new Map<string, JsonObject & { chapters: Array<JsonObject & { sections: Array<JsonObject & { entries: JsonObject[] }> }> }>();
+
+  for (const row of rows.length ? rows : parsed.rows) {
+    const subjectName = stringValue(row.subjectName ?? row.subject) || '默认知识手册';
+    const subjectKey = stableLegacyId(row.subjectLegacyId ?? row.subjectId, subjectName);
+    const subject = getOrCreateNested(subjectMap, subjectKey, () => ({
+      legacyId: subjectKey,
+      name: subjectName,
+      type: row.subjectType ?? row.type ?? null,
+      icon: row.icon ?? null,
+      color: row.color ?? null,
+      order: subjectMap.size + 1,
+      chapters: [],
+    }));
+
+    const chapterName = stringValue(row.chapterName ?? row.chapter) || '默认章节';
+    const chapterKey = stableLegacyId(row.chapterLegacyId ?? row.chapterId, `${subjectKey}:${chapterName}`);
+    let chapter = subject.chapters.find(item => item.legacyId === chapterKey);
+    if (!chapter) {
+      chapter = { legacyId: chapterKey, name: chapterName, order: subject.chapters.length + 1, sections: [] };
+      subject.chapters.push(chapter);
+    }
+
+    const sectionName = stringValue(row.sectionName ?? row.section) || '';
+    const sectionKey = stableLegacyId(row.sectionLegacyId ?? row.sectionId, `${chapterKey}:${sectionName || 'default'}`);
+    let section = chapter.sections.find(item => item.legacyId === sectionKey);
+    if (!section) {
+      section = { legacyId: sectionKey, name: sectionName || null, order: chapter.sections.length + 1, entries: [] };
+      chapter.sections.push(section);
+    }
+
+    if (row.title || row.content) {
+      section.entries.push({
+        legacyId: row.entryLegacyId ?? row.legacyId ?? null,
+        title: row.title ?? '未命名知识点',
+        summary: row.summary ?? null,
+        content: row.content ?? '',
+        tags: row.tags ?? [],
+        order: row.order ?? section.entries.length + 1,
+        isActive: row.isActive ?? true,
+        metadata: row.metadata ?? {},
+      });
+    }
+  }
+
+  return { subjects: Array.from(subjectMap.values()) };
+}
+
+function buildScorelinePayload(parsed: ParsedSpreadsheet) {
+  const buckets = {
+    fields: sheetRows(parsed, ['fields', 'scoreline_fields', '字段']),
+    schools: sheetRows(parsed, ['schools', 'scoreline_schools', '院校', '学校']),
+    majors: sheetRows(parsed, ['majors', 'scoreline_majors', '专业']),
+    records: sheetRows(parsed, ['records', 'scoreline_records', '分数线', '记录']),
+  };
+  if (Object.values(buckets).some(rows => rows.length > 0)) return buckets;
+  return { items: parsed.rows };
+}
+
+function buildVideosPayload(parsed: ParsedSpreadsheet) {
+  const rows = sheetRows(parsed, ['videos', 'video_explanations', '视频']) || parsed.rows;
+  return { videos: rows.length ? rows : parsed.rows };
+}
+
+export async function expandSpreadsheetImportBody(body: JsonObject, importType: SpreadsheetImportType): Promise<JsonObject> {
+  const sourceFormat = sourceFormatValue(body.sourceFormat);
+  if (sourceFormat === 'json') return body;
+
+  const parsed = sourceFormat === 'csv'
+    ? parseCsvBody(body, importType)
+    : await parseExcelBody(body, importType);
+
+  if (!parsed.rows.length && !Object.values(parsed.sheets).some(rows => rows.length > 0)) {
+    throw new HttpError(400, 'Spreadsheet import payload must contain at least one data row', 'EMPTY_IMPORT_PAYLOAD');
+  }
+
+  const next: JsonObject = {
+    ...body,
+    sourceFormat,
+    spreadsheet: parsed.metadata,
+  };
+  delete next.csvText;
+  delete next.text;
+  delete next.fileContent;
+  delete next.fileBase64;
+  delete next.excelBase64;
+  delete next.csvBase64;
+  delete next.payload;
+
+  if (importType === 'questions') next.items = parsed.rows;
+  if (importType === 'vocabulary') Object.assign(next, buildVocabularyPayload(parsed));
+  if (importType === 'handbook') Object.assign(next, buildHandbookPayload(parsed));
+  if (importType === 'scoreline') Object.assign(next, buildScorelinePayload(parsed));
+  if (importType === 'videos') Object.assign(next, buildVideosPayload(parsed));
+
+  return next;
+}
--- a/apps/api/src/features/tenant-content/imports.ts
+++ b/apps/api/src/features/tenant-content/imports.ts
@@ -1,11 +1,9 @@
 import { createHash, randomUUID } from 'node:crypto';
 import type pg from 'pg';
-import { config } from '../../core/config.js';
-import { HttpError, type RequestContext } from '../../core/http.js';
-import { intParam, readJsonBody, requiredString, stringParam } from '../../core/request.js';
+import { HttpError } from '../../core/errors.js';
+import type { RequestContext } from '../../core/http.js';
 import { query, queryOne, transaction } from '../../core/db.js';
-import { requireTenantContentEditor, type TenantContentAuth } from './auth.js';
-import { boolValue, nullableString } from './utils.js';
+import type { TenantContentAuth } from './auth.js';

 type JsonObject = Record<string, unknown>;

@@ -114,8 +112,10 @@ interface NormalizedHandbookSubject {
 }

 type ContentImportType = 'vocabulary' | 'handbook' | 'scoreline' | 'videos';
+export type ExecutableContentImportType = 'questions' | ContentImportType;
 type EntryBoundImportType = 'vocabulary' | 'handbook';
 type GenericTargetEntryType = EntryBoundImportType | null;
+type SourceImportFormat = 'json' | 'csv' | 'excel';

 type ScorelineImportKind = 'field' | 'school' | 'major' | 'record';

@@ -227,6 +227,19 @@ function stringValue(value: unknown) {
  return typeof value === 'string' && value.trim() ? value.trim() : '';
 }

+function sourceImportFormat(value: unknown): SourceImportFormat {
+  const normalized = stringValue(value).toLowerCase();
+  if (!normalized || normalized === 'json') return 'json';
+  if (normalized === 'csv') return 'csv';
+  if (['excel', 'xlsx'].includes(normalized)) return 'excel';
+  throw new HttpError(400, 'sourceFormat must be json, csv, or excel', 'IMPORT_FORMAT_NOT_SUPPORTED');
+}
+
+function isAsyncExecution(value: unknown) {
+  const normalized = stringValue(value).toLowerCase();
+  return ['async', 'queued', 'queue'].includes(normalized);
+}
+
 function stringArrayValue(value: unknown) {
  if (!Array.isArray(value)) return [];
  return value.map(item => String(item).trim()).filter(Boolean);
@@ -291,6 +304,40 @@ function boolishValue(value: unknown, fallback: boolean) {
  return fallback;
 }

+function boolValue(value: unknown, fallback: boolean) {
+  return typeof value === 'boolean' ? value : fallback;
+}
+
+function nullableString(value: unknown) {
+  return typeof value === 'string' && value.trim() ? value.trim() : null;
+}
+
+function requiredString(body: JsonObject, key: string) {
+  const value = body[key];
+  if (typeof value !== 'string' || !value.trim()) {
+    throw new HttpError(400, `${key} is required`, 'REQUIRED_FIELD');
+  }
+  return value.trim();
+}
+
+async function routeDeps() {
+  const [{ config }, request, auth, spreadsheet] = await Promise.all([
+    import('../../core/config.js'),
+    import('../../core/request.js'),
+    import('./auth.js'),
+    import('./import-spreadsheet.js'),
+  ]);
+  return {
+    config,
+    intParam: request.intParam,
+    readJsonBody: request.readJsonBody,
+    requiredString: request.requiredString,
+    stringParam: request.stringParam,
+    requireTenantContentEditor: auth.requireTenantContentEditor,
+    expandSpreadsheetImportBody: spreadsheet.expandSpreadsheetImportBody,
+  };
+}
+
 function integerValue(value: unknown, fallback: number) {
  const numberValue = Number(value ?? fallback);
  return Number.isFinite(numberValue) ? Math.trunc(numberValue) : fallback;
@@ -647,13 +694,9 @@ async function assertTargetReferences(client: pg.PoolClient, auth: TenantContent

 async function createQuestionPreviewJob(auth: TenantContentAuth, body: JsonObject): Promise<PreviewResult> {
  const rawItems = parseQuestionItems(body);
-  const sourceFormat = stringValue(body.sourceFormat) || 'json';
+  const sourceFormat = sourceImportFormat(body.sourceFormat);
  const sourceName = stringValue(body.sourceName) || null;

-  if (sourceFormat !== 'json') {
-    throw new HttpError(400, 'Only json sourceFormat is supported by the synchronous API for now', 'IMPORT_FORMAT_NOT_SUPPORTED');
-  }
-
  return transaction(async client => {
    const target = await assertTargetReferences(client, auth, body);
    const normalizedItems = rawItems.map((raw, index) => {
@@ -684,7 +727,7 @@ async function createQuestionPreviewJob(auth: TenantContentAuth, body: JsonObjec
        target_category_id, target_node_id, target_question_bank_id,
        target_entry_id, target_content_node_id, target_collection_id,
        dry_run, total_count, valid_count, error_count, warning_count,
-        summary, raw_payload, normalized_payload
+        summary, raw_payload, normalized_payload, parser_metadata
      )
      values (
        $1, $2, 'questions', $3, 'preview',
@@ -692,7 +735,7 @@ async function createQuestionPreviewJob(auth: TenantContentAuth, body: JsonObjec
        $8::uuid, $9::uuid, $10::uuid,
        $11::uuid, $12::uuid, $13::uuid,
        true, $14, $15, $16, $17,
-        $18::jsonb, $19::jsonb, $20::jsonb
+        $18::jsonb, $19::jsonb, $20::jsonb, $21::jsonb
      )
      returning id, status, total_count as "totalCount", valid_count as "validCount",
                error_count as "errorCount", warning_count as "warningCount"
@@ -718,6 +761,7 @@ async function createQuestionPreviewJob(auth: TenantContentAuth, body: JsonObjec
        JSON.stringify({ target, generatedAt: new Date().toISOString() }),
        rawPayload,
        normalizedPayload,
+        JSON.stringify(objectValue(body.spreadsheet)),
      ],
    );

@@ -1659,11 +1703,8 @@ async function createGenericPreviewJob<T>(
  normalizedItems: NormalizedImportItem<T>[],
  expectedEntryType: GenericTargetEntryType = importType === 'vocabulary' || importType === 'handbook' ? importType : null,
 ): Promise<PreviewResult<T>> {
-  const sourceFormat = stringValue(body.sourceFormat) || 'json';
+  const sourceFormat = sourceImportFormat(body.sourceFormat);
  const sourceName = stringValue(body.sourceName) || null;
-  if (sourceFormat !== 'json') {
-    throw new HttpError(400, 'Only json sourceFormat is supported by the synchronous API for now', 'IMPORT_FORMAT_NOT_SUPPORTED');
-  }

  return transaction(async client => {
    const target = await assertGenericTargetReferences(client, auth, body, expectedEntryType);
@@ -1678,13 +1719,13 @@ async function createGenericPreviewJob<T>(
        tenant_id, created_by, import_type, source_format, status,
        source_name, source_hash, target_region_id, target_entry_id,
        target_content_node_id, dry_run, total_count, valid_count,
-        error_count, warning_count, summary, raw_payload, normalized_payload
+        error_count, warning_count, summary, raw_payload, normalized_payload, parser_metadata
      )
      values (
        $1, $2, $3, $4, 'preview',
        $5, $6, $7::uuid, $8::uuid,
        $9::uuid, true, $10, $11,
-        $12, $13, $14::jsonb, $15::jsonb, $16::jsonb
+        $12, $13, $14::jsonb, $15::jsonb, $16::jsonb, $17::jsonb
      )
      returning id, status, total_count as "totalCount", valid_count as "validCount",
                error_count as "errorCount", warning_count as "warningCount"
@@ -1706,6 +1747,7 @@ async function createGenericPreviewJob<T>(
        JSON.stringify({ target, generatedAt: new Date().toISOString() }),
        JSON.stringify(normalizedItems.map(item => item.source)),
        JSON.stringify(normalizedItems.map(item => item.normalized).filter(Boolean)),
+        JSON.stringify(objectValue(body.spreadsheet)),
      ],
    );

@@ -3052,196 +3094,31 @@ async function importOneVideo(
  return { insertedCount, updatedCount, skippedCount };
 }

-async function runGenericImport<T>(
+interface ContentImportExecutionOptions {
+  jobId: string;
+  importType: ExecutableContentImportType;
+  allowPartial?: boolean;
+  allowQueuedJob?: boolean;
+}
+
+interface ContentImportExecutionResult {
+  jobId: string;
+  status: string;
+  idempotent?: boolean;
+  insertedCount: number;
+  updatedCount: number;
+  skippedCount: number;
+  errorCount?: number;
+  warningCount?: number;
+}
+
+async function executeQuestionsImportJob(
  auth: TenantContentAuth,
-  body: JsonObject,
-  importType: ContentImportType,
-  createPreview: () => Promise<PreviewResult<T>>,
-  importOne: (
-    client: pg.PoolClient,
-    auth: TenantContentAuth,
-    job: {
-      id: string;
-      target_region_id: string | null;
-      target_entry_id: string | null;
-      target_content_node_id: string | null;
-    },
-    item: {
-      id: string;
-      row_no: number;
-      normalized_payload: T;
-    },
-  ) => Promise<{ insertedCount: number; updatedCount: number; skippedCount: number }>,
+  input: Omit<ContentImportExecutionOptions, 'importType'>,
 ) {
-  const allowPartial = boolValue(body.allowPartial, false);
-  const jobId = nullableString(body.previewJobId) || nullableString(body.jobId);
-  const createdPreview = jobId ? null : await createPreview();
-  const finalJobId = jobId || createdPreview?.job.id || '';
-
-  const result = await transaction(async client => {
-    const job = await loadGenericPreviewJob(client, auth, finalJobId, importType);
-    if (job.status === 'completed' || job.status === 'completed_with_errors') {
-      return {
-        jobId: job.id,
-        status: job.status,
-        idempotent: true,
-        insertedCount: 0,
-        updatedCount: 0,
-        skippedCount: 0,
-      };
-    }
-
-    if (job.error_count > 0 && !allowPartial) {
-      await client.query(
-        `
-        update public.content_import_jobs
-        set status = 'rejected', error_message = 'Preview contains validation errors', updated_at = now()
-        where tenant_id = $1 and id = $2
-        `,
-        [auth.tenantId, job.id],
-      );
-      throw new HttpError(409, 'Preview contains validation errors. Fix issues or set allowPartial=true.', 'IMPORT_HAS_ERRORS');
-    }
-
-    await client.query(
-      `
-      update public.content_import_jobs
-      set status = 'importing', dry_run = false, started_at = coalesce(started_at, now()), updated_at = now()
-      where tenant_id = $1 and id = $2
-      `,
-      [auth.tenantId, job.id],
-    );
-
-    const itemResult = await client.query<{
-      id: string;
-      row_no: number;
-      normalized_payload: T;
-    }>(
-      `
-      select id, row_no, normalized_payload
-      from public.content_import_items
-      where tenant_id = $1 and job_id = $2 and status = 'valid'
-      order by
-        case
-          when $3 = 'scoreline' then
-            case normalized_payload ->> 'kind'
-              when 'field' then 1
-              when 'school' then 2
-              when 'major' then 3
-              when 'record' then 4
-              else 9
-            end
-          else 1
-        end,
-        row_no asc
-      for update
-      `,
-      [auth.tenantId, job.id, importType],
-    );
-
-    let insertedCount = 0;
-    let updatedCount = 0;
-    let skippedCount = 0;
-    for (const item of itemResult.rows) {
-      const status = await importOne(client, auth, job, item);
-      insertedCount += status.insertedCount;
-      updatedCount += status.updatedCount;
-      skippedCount += status.skippedCount;
-    }
-
-    const finalStatus = job.error_count > 0 ? 'completed_with_errors' : 'completed';
-    await client.query(
-      `
-      update public.content_import_jobs
-      set status = $3,
-          inserted_count = $4,
-          updated_count = $5,
-          skipped_count = $6,
-          summary = coalesce(summary, '{}'::jsonb) || $7::jsonb,
-          finished_at = now(),
-          updated_at = now()
-      where tenant_id = $1 and id = $2
-      `,
-      [
-        auth.tenantId,
-        job.id,
-        finalStatus,
-        insertedCount,
-        updatedCount,
-        skippedCount,
-        JSON.stringify({ insertedCount, updatedCount, skippedCount, importedAt: new Date().toISOString() }),
-      ],
-    );
-
-    await client.query(
-      `
-      insert into public.audit_logs (tenant_id, actor_user_id, action, target_type, target_id, details)
-      values ($1, $2, $3, 'content_import_job', $4, $5::jsonb)
-      `,
-      [
-        auth.tenantId,
-        auth.userId,
-        `content.import.${importType}.completed`,
-        job.id,
-        JSON.stringify({ insertedCount, updatedCount, skippedCount, allowPartial }),
-      ],
-    );
-
-    return {
-      jobId: job.id,
-      status: finalStatus,
-      insertedCount,
-      updatedCount,
-      skippedCount,
-      errorCount: job.error_count,
-      warningCount: job.warning_count,
-    };
-  });
-
-  return { item: result, preview: createdPreview };
-}
-
-export async function previewQuestionsImportRoute(ctx: RequestContext) {
-  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
-  return createQuestionPreviewJob(auth, body);
-}
-
-export async function previewVocabularyImportRoute(ctx: RequestContext) {
-  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
-  return createGenericPreviewJob(auth, body, 'vocabulary', 'vocabulary_unit', createVocabularyNormalizedItems(body));
-}
-
-export async function previewHandbookImportRoute(ctx: RequestContext) {
-  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
-  return createGenericPreviewJob(auth, body, 'handbook', 'handbook_subject', createHandbookNormalizedItems(body));
-}
-
-export async function previewScorelineImportRoute(ctx: RequestContext) {
-  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
-  return createGenericPreviewJob(auth, body, 'scoreline', 'scoreline_item', createScorelineNormalizedItems(body), null);
-}
-
-export async function previewVideosImportRoute(ctx: RequestContext) {
-  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
-  return createGenericPreviewJob(auth, body, 'videos', 'video_explanation', createVideoNormalizedItems(body), null);
-}
-
-export async function importQuestionsRoute(ctx: RequestContext) {
-  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
-  const allowPartial = boolValue(body.allowPartial, false);
-  const jobId = nullableString(body.previewJobId) || nullableString(body.jobId);
-
-  const createdPreview = jobId ? null : await createQuestionPreviewJob(auth, body);
-  const finalJobId = jobId || createdPreview?.job.id || '';
-
-  const result = await transaction(async client => {
-    const job = await loadPreviewJob(client, auth, finalJobId);
+  const allowPartial = input.allowPartial === true;
+  return transaction(async client => {
+    const job = await loadPreviewJob(client, auth, input.jobId);

    if (job.status === 'completed' || job.status === 'completed_with_errors') {
      return {
@@ -3253,12 +3130,19 @@ export async function importQuestionsRoute(ctx: RequestContext) {
        skippedCount: 0,
      };
    }
+    if (job.status === 'pending' && input.allowQueuedJob !== true) {
+      throw new HttpError(409, 'Import job is queued for async processing', 'IMPORT_JOB_QUEUED');
+    }

    if (job.error_count > 0 && !allowPartial) {
      await client.query(
        `
        update public.content_import_jobs
-        set status = 'rejected', error_message = 'Preview contains validation errors', updated_at = now()
+        set status = 'rejected',
+            error_message = 'Preview contains validation errors',
+            locked_at = null,
+            locked_by = null,
+            updated_at = now()
        where tenant_id = $1 and id = $2
        `,
        [auth.tenantId, job.id],
@@ -3310,6 +3194,8 @@ export async function importQuestionsRoute(ctx: RequestContext) {
          skipped_count = $6,
          summary = coalesce(summary, '{}'::jsonb) || $7::jsonb,
          finished_at = now(),
+          locked_at = null,
+          locked_by = null,
          updated_at = now()
      where tenant_id = $1 and id = $2
      `,
@@ -3342,13 +3228,389 @@ export async function importQuestionsRoute(ctx: RequestContext) {
      warningCount: job.warning_count,
    };
  });
+}
+
+async function executeGenericImportJob<T>(
+  auth: TenantContentAuth,
+  input: Omit<ContentImportExecutionOptions, 'importType'> & { importType: ContentImportType },
+  importOne: (
+    client: pg.PoolClient,
+    auth: TenantContentAuth,
+    job: {
+      id: string;
+      target_region_id: string | null;
+      target_entry_id: string | null;
+      target_content_node_id: string | null;
+    },
+    item: {
+      id: string;
+      row_no: number;
+      normalized_payload: T;
+    },
+  ) => Promise<{ insertedCount: number; updatedCount: number; skippedCount: number }>,
+) {
+  const allowPartial = input.allowPartial === true;
+  return transaction(async client => {
+    const job = await loadGenericPreviewJob(client, auth, input.jobId, input.importType);
+    if (job.status === 'completed' || job.status === 'completed_with_errors') {
+      return {
+        jobId: job.id,
+        status: job.status,
+        idempotent: true,
+        insertedCount: 0,
+        updatedCount: 0,
+        skippedCount: 0,
+      };
+    }
+    if (job.status === 'pending' && input.allowQueuedJob !== true) {
+      throw new HttpError(409, 'Import job is queued for async processing', 'IMPORT_JOB_QUEUED');
+    }
+
+    if (job.error_count > 0 && !allowPartial) {
+      await client.query(
+        `
+        update public.content_import_jobs
+        set status = 'rejected',
+            error_message = 'Preview contains validation errors',
+            locked_at = null,
+            locked_by = null,
+            updated_at = now()
+        where tenant_id = $1 and id = $2
+        `,
+        [auth.tenantId, job.id],
+      );
+      throw new HttpError(409, 'Preview contains validation errors. Fix issues or set allowPartial=true.', 'IMPORT_HAS_ERRORS');
+    }
+
+    await client.query(
+      `
+      update public.content_import_jobs
+      set status = 'importing', dry_run = false, started_at = coalesce(started_at, now()), updated_at = now()
+      where tenant_id = $1 and id = $2
+      `,
+      [auth.tenantId, job.id],
+    );
+
+    const itemResult = await client.query<{
+      id: string;
+      row_no: number;
+      normalized_payload: T;
+    }>(
+      `
+      select id, row_no, normalized_payload
+      from public.content_import_items
+      where tenant_id = $1 and job_id = $2 and status = 'valid'
+      order by
+        case
+          when $3 = 'scoreline' then
+            case normalized_payload ->> 'kind'
+              when 'field' then 1
+              when 'school' then 2
+              when 'major' then 3
+              when 'record' then 4
+              else 9
+            end
+          else 1
+        end,
+        row_no asc
+      for update
+      `,
+      [auth.tenantId, job.id, input.importType],
+    );
+
+    let insertedCount = 0;
+    let updatedCount = 0;
+    let skippedCount = 0;
+    for (const item of itemResult.rows) {
+      const status = await importOne(client, auth, job, item);
+      insertedCount += status.insertedCount;
+      updatedCount += status.updatedCount;
+      skippedCount += status.skippedCount;
+    }
+
+    const finalStatus = job.error_count > 0 ? 'completed_with_errors' : 'completed';
+    await client.query(
+      `
+      update public.content_import_jobs
+      set status = $3,
+          inserted_count = $4,
+          updated_count = $5,
+          skipped_count = $6,
+          summary = coalesce(summary, '{}'::jsonb) || $7::jsonb,
+          finished_at = now(),
+          locked_at = null,
+          locked_by = null,
+          updated_at = now()
+      where tenant_id = $1 and id = $2
+      `,
+      [
+        auth.tenantId,
+        job.id,
+        finalStatus,
+        insertedCount,
+        updatedCount,
+        skippedCount,
+        JSON.stringify({ insertedCount, updatedCount, skippedCount, importedAt: new Date().toISOString() }),
+      ],
+    );
+
+    await client.query(
+      `
+      insert into public.audit_logs (tenant_id, actor_user_id, action, target_type, target_id, details)
+      values ($1, $2, $3, 'content_import_job', $4, $5::jsonb)
+      `,
+      [
+        auth.tenantId,
+        auth.userId,
+        `content.import.${input.importType}.completed`,
+        job.id,
+        JSON.stringify({ insertedCount, updatedCount, skippedCount, allowPartial }),
+      ],
+    );
+
+    return {
+      jobId: job.id,
+      status: finalStatus,
+      insertedCount,
+      updatedCount,
+      skippedCount,
+      errorCount: job.error_count,
+      warningCount: job.warning_count,
+    };
+  });
+}
+
+export async function executeContentImportJob(
+  auth: TenantContentAuth,
+  input: ContentImportExecutionOptions,
+): Promise<ContentImportExecutionResult> {
+  if (input.importType === 'questions') {
+    return executeQuestionsImportJob(auth, input);
+  }
+  if (input.importType === 'vocabulary') {
+    return executeGenericImportJob(auth, { ...input, importType: 'vocabulary' }, importOneVocabularyUnit);
+  }
+  if (input.importType === 'handbook') {
+    return executeGenericImportJob(auth, { ...input, importType: 'handbook' }, importOneHandbookSubject);
+  }
+  if (input.importType === 'scoreline') {
+    return executeGenericImportJob(auth, { ...input, importType: 'scoreline' }, importOneScorelineItem);
+  }
+  if (input.importType === 'videos') {
+    return executeGenericImportJob(auth, { ...input, importType: 'videos' }, importOneVideo);
+  }
+  throw new HttpError(400, 'Unsupported import type', 'IMPORT_TYPE_NOT_SUPPORTED');
+}
+
+async function queueContentImportJob(
+  auth: TenantContentAuth,
+  input: ContentImportExecutionOptions,
+) {
+  const allowPartial = input.allowPartial === true;
+  return transaction(async client => {
+    const result = await client.query<{
+      id: string;
+      status: string;
+      error_count: number;
+      warning_count: number;
+      attempt_count: number;
+      max_attempts: number;
+    }>(
+      `
+      select id, status, error_count, warning_count, attempt_count, max_attempts
+      from public.content_import_jobs
+      where tenant_id = $1 and id = $2 and import_type = $3
+      limit 1
+      for update
+      `,
+      [auth.tenantId, input.jobId, input.importType],
+    );
+    const job = result.rows[0];
+    if (!job) throw new HttpError(404, 'Import job not found', 'IMPORT_JOB_NOT_FOUND');
+    if (job.status === 'completed' || job.status === 'completed_with_errors') {
+      return {
+        jobId: job.id,
+        status: job.status,
+        idempotent: true,
+        executionMode: 'async',
+        errorCount: job.error_count,
+        warningCount: job.warning_count,
+      };
+    }
+    if (job.status === 'pending') {
+      return {
+        jobId: job.id,
+        status: job.status,
+        idempotent: true,
+        executionMode: 'async',
+        errorCount: job.error_count,
+        warningCount: job.warning_count,
+      };
+    }
+    if (job.status === 'importing') {
+      throw new HttpError(409, 'Import job is already importing', 'IMPORT_JOB_NOT_READY');
+    }
+    if (['failed', 'rejected'].includes(job.status)) {
+      throw new HttpError(409, `Import job is ${job.status}`, 'IMPORT_JOB_NOT_READY');
+    }
+    if (job.error_count > 0 && !allowPartial) {
+      await client.query(
+        `
+        update public.content_import_jobs
+        set status = 'rejected',
+            error_message = 'Preview contains validation errors',
+            updated_at = now()
+        where tenant_id = $1 and id = $2
+        `,
+        [auth.tenantId, job.id],
+      );
+      throw new HttpError(409, 'Preview contains validation errors. Fix issues or set allowPartial=true.', 'IMPORT_HAS_ERRORS');
+    }
+
+    const queuedAt = new Date().toISOString();
+    await client.query(
+      `
+      update public.content_import_jobs
+      set execution_mode = 'async',
+          status = 'pending',
+          dry_run = false,
+          queued_at = coalesce(queued_at, now()),
+          locked_at = null,
+          locked_by = null,
+          next_attempt_at = now(),
+          summary = coalesce(summary, '{}'::jsonb) || $3::jsonb,
+          updated_at = now()
+      where tenant_id = $1 and id = $2
+      `,
+      [
+        auth.tenantId,
+        job.id,
+        JSON.stringify({
+          importOptions: { allowPartial },
+          queuedAt,
+        }),
+      ],
+    );
+
+    await client.query(
+      `
+      insert into public.audit_logs (tenant_id, actor_user_id, action, target_type, target_id, details)
+      values ($1, $2, $3, 'content_import_job', $4, $5::jsonb)
+      `,
+      [
+        auth.tenantId,
+        auth.userId,
+        `content.import.${input.importType}.queued`,
+        job.id,
+        JSON.stringify({ allowPartial, executionMode: 'async', queuedAt }),
+      ],
+    );
+
+    return {
+      jobId: job.id,
+      status: 'pending',
+      executionMode: 'async',
+      errorCount: job.error_count,
+      warningCount: job.warning_count,
+    };
+  });
+}
+
+async function runGenericImport<T>(
+  auth: TenantContentAuth,
+  body: JsonObject,
+  importType: ContentImportType,
+  createPreview: () => Promise<PreviewResult<T>>,
+  importOne: (
+    client: pg.PoolClient,
+    auth: TenantContentAuth,
+    job: {
+      id: string;
+      target_region_id: string | null;
+      target_entry_id: string | null;
+      target_content_node_id: string | null;
+    },
+    item: {
+      id: string;
+      row_no: number;
+      normalized_payload: T;
+    },
+  ) => Promise<{ insertedCount: number; updatedCount: number; skippedCount: number }>,
+) {
+  const allowPartial = boolValue(body.allowPartial, false);
+  const jobId = nullableString(body.previewJobId) || nullableString(body.jobId);
+  const createdPreview = jobId ? null : await createPreview();
+  const finalJobId = jobId || createdPreview?.job.id || '';
+  const result = isAsyncExecution(body.executionMode ?? body.execution_mode)
+    ? await queueContentImportJob(auth, { jobId: finalJobId, importType, allowPartial })
+    : await executeGenericImportJob(auth, { jobId: finalJobId, importType, allowPartial }, importOne);
+
+  return { item: result, preview: createdPreview };
+}
+
+export async function previewQuestionsImportRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
+  const auth = await requireTenantContentEditor(ctx);
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'questions');
+  return createQuestionPreviewJob(auth, body);
+}
+
+export async function previewVocabularyImportRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
+  const auth = await requireTenantContentEditor(ctx);
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'vocabulary');
+  return createGenericPreviewJob(auth, body, 'vocabulary', 'vocabulary_unit', createVocabularyNormalizedItems(body));
+}
+
+export async function previewHandbookImportRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
+  const auth = await requireTenantContentEditor(ctx);
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'handbook');
+  return createGenericPreviewJob(auth, body, 'handbook', 'handbook_subject', createHandbookNormalizedItems(body));
+}
+
+export async function previewScorelineImportRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
+  const auth = await requireTenantContentEditor(ctx);
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'scoreline');
+  return createGenericPreviewJob(auth, body, 'scoreline', 'scoreline_item', createScorelineNormalizedItems(body), null);
+}
+
+export async function previewVideosImportRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
+  const auth = await requireTenantContentEditor(ctx);
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'videos');
+  return createGenericPreviewJob(auth, body, 'videos', 'video_explanation', createVideoNormalizedItems(body), null);
+}
+
+export async function importQuestionsRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
+  const auth = await requireTenantContentEditor(ctx);
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'questions');
+  const allowPartial = boolValue(body.allowPartial, false);
+  const jobId = nullableString(body.previewJobId) || nullableString(body.jobId);
+
+  const createdPreview = jobId ? null : await createQuestionPreviewJob(auth, body);
+  const finalJobId = jobId || createdPreview?.job.id || '';
+
+  const result = isAsyncExecution(body.executionMode ?? body.execution_mode)
+    ? await queueContentImportJob(auth, { jobId: finalJobId, importType: 'questions', allowPartial })
+    : await executeContentImportJob(auth, { jobId: finalJobId, importType: 'questions', allowPartial });

  return { item: result, preview: createdPreview };
 }

 export async function importVocabularyRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'vocabulary');
  return runGenericImport(
    auth,
    body,
@@ -3359,8 +3621,10 @@ export async function importVocabularyRoute(ctx: RequestContext) {
 }

 export async function importHandbookRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'handbook');
  return runGenericImport(
    auth,
    body,
@@ -3371,8 +3635,10 @@ export async function importHandbookRoute(ctx: RequestContext) {
 }

 export async function importScorelineRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'scoreline');
  return runGenericImport(
    auth,
    body,
@@ -3383,8 +3649,10 @@ export async function importScorelineRoute(ctx: RequestContext) {
 }

 export async function importVideosRoute(ctx: RequestContext) {
+  const { config, expandSpreadsheetImportBody, readJsonBody, requireTenantContentEditor } = await routeDeps();
  const auth = await requireTenantContentEditor(ctx);
-  const body = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const rawBody = await readJsonBody(ctx, { maxBytes: config.maxImportJsonBodyBytes });
+  const body = await expandSpreadsheetImportBody(rawBody, 'videos');
  return runGenericImport(
    auth,
    body,
@@ -3395,6 +3663,7 @@ export async function importVideosRoute(ctx: RequestContext) {
 }

 export async function importJobsRoute(ctx: RequestContext) {
+  const { intParam, requireTenantContentEditor, stringParam } = await routeDeps();
  const auth = await requireTenantContentEditor(ctx);
  const limit = intParam(ctx, 'limit', 50, 200);
  const importType = stringParam(ctx, 'importType');
@@ -3423,6 +3692,7 @@ export async function importJobsRoute(ctx: RequestContext) {
           valid_count as "validCount", error_count as "errorCount",
           warning_count as "warningCount", inserted_count as "insertedCount",
           updated_count as "updatedCount", skipped_count as "skippedCount",
+           execution_mode as "executionMode", parser_metadata as "parserMetadata",
           summary, error_message as "errorMessage",
           started_at as "startedAt", finished_at as "finishedAt",
           created_by as "createdBy", created_at as "createdAt", updated_at as "updatedAt"
@@ -3438,6 +3708,7 @@ export async function importJobsRoute(ctx: RequestContext) {
 }

 export async function importIssuesRoute(ctx: RequestContext) {
+  const { intParam, requireTenantContentEditor, requiredString, stringParam } = await routeDeps();
  const auth = await requireTenantContentEditor(ctx);
  const jobId = requiredString({ jobId: stringParam(ctx, 'jobId') }, 'jobId');
  const limit = intParam(ctx, 'limit', 500, 2000);
--- a/apps/worker/package.json
+++ b/apps/worker/package.json
@@ -10,7 +10,8 @@
    "check": "tsc -p tsconfig.json --noEmit",
    "crm:once": "tsx src/index.ts --once --job crm",
    "commerce:once": "tsx src/index.ts --once --job commerce",
-    "assets:once": "tsx src/index.ts --once --job assets"
+    "assets:once": "tsx src/index.ts --once --job assets",
+    "imports:once": "tsx src/index.ts --once --job imports"
  },
  "dependencies": {
    "@supabase/storage-js": "^2.108.2",
--- a/apps/worker/src/config.ts
+++ b/apps/worker/src/config.ts
@@ -17,6 +17,9 @@ export interface WorkerConfig {
  assetMinAgeSeconds: number;
  assetRecheckIntervalSeconds: number;
  assetRequestTimeoutMs: number;
+  importBatchSize: number;
+  importWorkerId: string;
+  importBackoffSeconds: number[];
  storageMaxUploadBytes: number;
  storageAllowedMimePrefixes: string[];
  storageAllowedMimeTypes: string[];
@@ -53,6 +56,11 @@ export const config: WorkerConfig = {
  assetMinAgeSeconds: envNumber('WORKER_ASSET_MIN_AGE_SECONDS', 300),
  assetRecheckIntervalSeconds: envNumber('WORKER_ASSET_RECHECK_INTERVAL_SECONDS', 60 * 60 * 24),
  assetRequestTimeoutMs: envNumber('WORKER_ASSET_REQUEST_TIMEOUT_MS', 10_000),
+  importBatchSize: envNumber('WORKER_IMPORT_BATCH_SIZE', 5),
+  importWorkerId: envString('WORKER_IMPORT_ID', `imports-${process.pid}`),
+  importBackoffSeconds: envList('WORKER_IMPORT_BACKOFF_SECONDS', '30,120,600,1800')
+    .map((value: string) => Number(value))
+    .filter((value: number) => Number.isFinite(value) && value > 0),
  storageMaxUploadBytes: envNumber('STORAGE_MAX_UPLOAD_BYTES', 1024 * 1024 * 500),
  storageAllowedMimePrefixes: envList('STORAGE_ALLOWED_MIME_PREFIXES', 'image/,video/,audio/'),
  storageAllowedMimeTypes: envList(
--- a/apps/worker/src/index.ts
+++ b/apps/worker/src/index.ts
@@ -4,6 +4,8 @@ import { processCrmBatch } from './jobs/crm.js';
 import { processCommerceBatch } from './jobs/commerce.js';
 import { processAssetBatch } from './jobs/assets.js';

+const extraClosers = new Set<() => Promise<void>>();
+
 function hasArg(name: string) {
  return process.argv.includes(name);
 }
@@ -37,6 +39,17 @@ async function runOnce() {
    );
    return;
  }
+  if (job === 'imports') {
+    const { closeImportExecutorPool, processImportBatch } = await import('./jobs/imports.js');
+    extraClosers.add(closeImportExecutorPool);
+    const result = await processImportBatch();
+    console.log(
+      `[worker] imports batch processed=${result.processed}`
+        + ` completed=${result.completed} completedWithErrors=${result.completedWithErrors}`
+        + ` failed=${result.failed} retrying=${result.retrying} skipped=${result.skipped}`,
+    );
+    return;
+  }
  throw new Error(`Unsupported worker job: ${job}`);
 }

@@ -66,5 +79,8 @@ try {
    await runOnce();
  }
 } finally {
+  for (const closeExtra of extraClosers) {
+    await closeExtra();
+  }
  await closePool();
 }
--- a/apps/worker/src/jobs/imports.ts
+++ b/apps/worker/src/jobs/imports.ts
@@ -0,0 +1,221 @@
+import { pool } from '../db.js';
+import { config } from '../config.js';
+import { executeContentImportJob, type ExecutableContentImportType } from '../../../api/src/features/tenant-content/imports.js';
+import { closePool as closeApiImportPool } from '../../../api/src/core/db.js';
+
+interface ImportJobRow {
+  id: string;
+  tenantId: string;
+  createdBy: string | null;
+  importType: ExecutableContentImportType;
+  status: string;
+  attemptCount: number;
+  maxAttempts: number;
+  summary: Record<string, unknown>;
+}
+
+interface ImportWorkerResult {
+  processed: number;
+  completed: number;
+  completedWithErrors: number;
+  failed: number;
+  retrying: number;
+  skipped: number;
+}
+
+function objectValue(value: unknown): Record<string, unknown> {
+  return value && typeof value === 'object' && !Array.isArray(value) ? value as Record<string, unknown> : {};
+}
+
+function boolValue(value: unknown, fallback: boolean) {
+  return typeof value === 'boolean' ? value : fallback;
+}
+
+function numberValue(value: unknown, fallback: number) {
+  const parsed = Number(value ?? fallback);
+  return Number.isFinite(parsed) ? parsed : fallback;
+}
+
+function errorMessage(error: unknown) {
+  return error instanceof Error ? error.message : String(error);
+}
+
+function errorCode(error: unknown) {
+  return typeof error === 'object' && error !== null && 'code' in error
+    ? String((error as { code?: unknown }).code || 'IMPORT_WORKER_ERROR')
+    : 'IMPORT_WORKER_ERROR';
+}
+
+function truncate(value: unknown, max = 1900) {
+  return String(value ?? '').slice(0, max);
+}
+
+function backoffSeconds(attemptCount: number) {
+  const backoffs = config.importBackoffSeconds.length ? config.importBackoffSeconds : [30, 120, 600, 1800];
+  return backoffs[Math.min(Math.max(0, attemptCount - 1), backoffs.length - 1)];
+}
+
+function importOptions(summary: Record<string, unknown>) {
+  const options = objectValue(summary.importOptions);
+  return {
+    allowPartial: boolValue(options.allowPartial, false),
+  };
+}
+
+async function claimImportJobs() {
+  const client = await pool.connect();
+  try {
+    await client.query('begin');
+    const result = await client.query<ImportJobRow>(
+      `
+      select id,
+             tenant_id as "tenantId",
+             created_by as "createdBy",
+             import_type as "importType",
+             status,
+             attempt_count as "attemptCount",
+             max_attempts as "maxAttempts",
+             summary
+      from public.content_import_jobs
+      where execution_mode = 'async'
+        and status = 'pending'
+        and attempt_count < max_attempts
+        and (next_attempt_at is null or next_attempt_at <= now())
+      order by created_at asc
+      limit $1
+      for update skip locked
+      `,
+      [config.importBatchSize],
+    );
+
+    const ids = result.rows.map(row => row.id);
+    if (ids.length > 0) {
+      await client.query(
+        `
+        update public.content_import_jobs
+        set locked_at = now(),
+            locked_by = $2,
+            attempt_count = attempt_count + 1,
+            updated_at = now()
+        where id = any($1::uuid[])
+        `,
+        [ids, config.importWorkerId],
+      );
+    }
+    await client.query('commit');
+    return result.rows;
+  } catch (error) {
+    await client.query('rollback');
+    throw error;
+  } finally {
+    client.release();
+  }
+}
+
+async function markImportFailed(job: ImportJobRow, error: unknown) {
+  const nextAttempt = job.attemptCount + 1;
+  const willRetry = nextAttempt < job.maxAttempts;
+  const status = willRetry ? 'pending' : 'failed';
+  await pool.query(
+    `
+    update public.content_import_jobs
+    set status = $3,
+        error_message = $4,
+        summary = coalesce(summary, '{}'::jsonb) || $5::jsonb,
+        next_attempt_at = case when $6::boolean then now() + make_interval(secs => $7::integer) else null end,
+        locked_at = null,
+        locked_by = null,
+        finished_at = case when $3 = 'failed' then now() else finished_at end,
+        updated_at = now()
+    where tenant_id = $1 and id = $2
+    `,
+    [
+      job.tenantId,
+      job.id,
+      status,
+      truncate(errorMessage(error)),
+      JSON.stringify({
+        lastWorkerError: {
+          code: errorCode(error),
+          message: truncate(errorMessage(error)),
+          workerId: config.importWorkerId,
+          failedAt: new Date().toISOString(),
+          nextAttempt,
+          maxAttempts: job.maxAttempts,
+          willRetry,
+        },
+      }),
+      willRetry,
+      backoffSeconds(nextAttempt),
+    ],
+  );
+
+  await pool.query(
+    `
+    insert into public.audit_logs (tenant_id, actor_user_id, action, target_type, target_id, details)
+    values ($1, $2, $3, 'content_import_job', $4, $5::jsonb)
+    `,
+    [
+      job.tenantId,
+      job.createdBy,
+      willRetry ? `content.import.${job.importType}.retry_scheduled` : `content.import.${job.importType}.failed`,
+      job.id,
+      JSON.stringify({
+        code: errorCode(error),
+        message: truncate(errorMessage(error)),
+        workerId: config.importWorkerId,
+        nextAttempt,
+        maxAttempts: job.maxAttempts,
+      }),
+    ],
+  );
+
+  return willRetry ? 'retrying' : 'failed';
+}
+
+export async function processImportBatch(): Promise<ImportWorkerResult> {
+  const jobs = await claimImportJobs();
+  const result: ImportWorkerResult = {
+    processed: jobs.length,
+    completed: 0,
+    completedWithErrors: 0,
+    failed: 0,
+    retrying: 0,
+    skipped: 0,
+  };
+
+  for (const job of jobs) {
+    try {
+      const execution = await executeContentImportJob(
+        {
+          tenantId: job.tenantId,
+          userId: job.createdBy || job.tenantId,
+          role: 'system_worker',
+          permissions: { 'content:*': true },
+          templatePermissions: {},
+        },
+        {
+          jobId: job.id,
+          importType: job.importType,
+          allowPartial: importOptions(job.summary).allowPartial,
+          allowQueuedJob: true,
+        },
+      );
+
+      if (execution.idempotent) result.skipped += 1;
+      else if (execution.status === 'completed_with_errors') result.completedWithErrors += 1;
+      else if (execution.status === 'completed') result.completed += 1;
+      else result.skipped += 1;
+    } catch (error) {
+      const state = await markImportFailed(job, error);
+      if (state === 'retrying') result.retrying += 1;
+      else result.failed += 1;
+    }
+  }
+
+  return result;
+}
+
+export async function closeImportExecutorPool() {
+  await closeApiImportPool();
+}
--- a/docs/refactor/api-structure.md
+++ b/docs/refactor/api-structure.md
@@ -74,4 +74,4 @@ types.ts                   仅本领域使用的类型
 - `learning` 创建练习 session 时必须保存 `question_ids` 快照，避免随机刷题和模考过程中题目集合变化导致答题记录无法复盘。
 - 排行榜必须由后端按租户、地区、班级和可信用户上下文聚合，前端不能自行扫描答题记录、积分流水或单词进度后排名；后续高流量场景再通过 worker/materialized view 做日榜、周榜和防刷。
 - 资料、PDF、视频等对象存储资源必须先进入 `content_assets` 台账，再通过 API/Edge Function 做权限校验和签名 URL 下发；前端不能直接拼 OSS/COS/Supabase Storage 私有地址。
- 批量导入必须先写 `content_import_jobs/items/issues`，保留原始 payload、规范化 payload、逐行问题和审计记录；同步 API 当前支持题目 JSON，Excel/CSV 和其它内容类型应接入同一管线。
+- 批量导入必须先写 `content_import_jobs/items/issues`，保留原始 payload、规范化 payload、逐行问题和审计记录；题目、单词、知识手册、分数线和视频 JSON/CSV/Excel 都应进入同一管线，复杂大批量导入通过 `executionMode=async` 交给 imports worker 消费。
--- a/docs/refactor/backend-capability-status.md
+++ b/docs/refactor/backend-capability-status.md
@@ -163,8 +163,8 @@
 | 知识手册 JSON preview/import | 可联调 | 支持书籍/章节/小节/知识点归一化 |
 | 分数线 JSON preview/import | 可联调 | 支持 `fields/schools/majors/records` 分桶或 `items` 列表，后端校验租户地区和院校/专业引用 |
 | 视频 JSON preview/import | 可联调 | 支持 `videos/items`，后端校验题目、科目、资源引用，导入后写入 `question_videos` |
-| Excel/CSV 导入 | 待补齐 | 应复用 `content_import_jobs` 管线 |
-| 大批量异步导入 | 待补齐 | 需要 `apps/worker` |
+| Excel/CSV 导入 | 可联调 | 题目、单词、知识手册、分数线、视频已支持 CSV 和 `.xlsx` 解析，解析后复用 `content_import_jobs/items/issues` 管线并保留 `parser_metadata` |
+| 大批量异步导入 | 可联调 | `executionMode=async` 会将 preview job 置为 `pending`；`apps/worker --job imports` 抢占 queued job，复用 API 导入 executor，支持重试、清锁和审计；导入后复检待补 |
 | 公共题库版本同步 | 待补齐 | 当前采纳为快照复制；后续需 worker 做增量同步、冲突处理、版本升级通知和租户自改保护 |

 ## 当前验证
@@ -174,6 +174,7 @@
 ```bash
 npm audit
 npm run check:refactor
+npm run test:worker:imports
 ```

 `check:refactor` 包含：
--- a/docs/refactor/backend-handoff-roadmap.md
+++ b/docs/refactor/backend-handoff-roadmap.md
@@ -14,7 +14,7 @@
 - 销售/代理/CRM 已经有邀请码、扫码/分享事件、首绑客资保护、团队关系、统计、CRM 配置和入队能力。
 - 旧题库 JSON、单词模板、知识手册嵌套模板、分数线 JSON 和视频绑定 JSON 已经进入后端 preview/import 管线，由后端负责规范化、校验、幂等、审计和租户隔离。

-因此，后端现在已经具备进入 Taro 前端第一阶段联调的基础。需要注意的是，它还不是完整生产交付状态，真实云端鉴权、对象存储生产安全、支付/短信生产账号、微信网页登录/QQ 登录、真实数据 dry-run 迁移和大批量异步导入仍需要继续补齐或联调。
+因此，后端现在已经具备进入 Taro 前端第一阶段联调的基础。需要注意的是，它还不是完整生产交付状态，真实云端鉴权、对象存储生产安全、支付/短信生产账号、微信网页登录/QQ 登录、真实数据 dry-run 迁移、导入后复检和模板字段映射仍需要继续补齐或联调。

 ## 后端模块进度

@@ -23,16 +23,16 @@
 | 多租户底座 | 可联调 | 租户、域名、品牌、设置、RLS 基础、审计、Supabase JWT/API 身份映射 | 真实云端 Auth/JWKS 回归、生产 RLS 深测 |
 | 平台后台 | 基础完成 | 租户、套餐、订阅、账单、服务费、用量、公共题库授权 | 自动计费、平台审计、公共题库版本同步 |
 | 租户后台 | 可联调 | 品牌、域名、支付账户、登录配置、密钥掩码、活动、兑换码、优惠券、勋章管理/发放、成员权限、角色模板、菜单/模块/字段权限配置 API、班级/教师/学生范围权限 | 前端权限 UI、更细的数据范围组合 |
-| 题库与练习 | 可联调 | 内容入口、任意深度分类、题目集合、顺序/随机/全真模拟蓝图、组卷快照、答题、错题、收藏、模考报告、排行榜、公共题库采纳快照 | 专项策略、公共题库版本同步、Excel 导入、排行榜防刷/预聚合 |
-| 背单词 | 可联调 | 单元、单词、进度、收藏、统计、每日计划、JSON 导入、排行榜 | Excel 导入、更细复习参数 |
-| 知识手册 | 可联调 | 科目、章节、条目、Markdown 内容、嵌套 JSON 导入 | 富文本资源、版本管理、附件/PDF 关联 |
-| 分数线 | 可联调 | 院校、专业、动态字段、记录、年份、趋势、后台维护、JSON 导入 | 复杂筛选、AI 择校上下文 |
-| 视频解析 | 可联调 | 单题视频、批量查询、后台视频绑定、JSON 导入、会员播放权限、播放次数扣减、签名 URL 和播放日志 | 深度防盗链、动态水印、播放统计 |
+| 题库与练习 | 可联调 | 内容入口、任意深度分类、题目集合、顺序/随机/全真模拟蓝图、组卷快照、答题、错题、收藏、模考报告、排行榜、公共题库采纳快照 | 专项策略、公共题库版本同步、排行榜防刷/预聚合 |
+| 背单词 | 可联调 | 单元、单词、进度、收藏、统计、每日计划、JSON/CSV/Excel 导入、排行榜 | 更细复习参数 |
+| 知识手册 | 可联调 | 科目、章节、条目、Markdown 内容、嵌套 JSON/CSV/Excel 导入 | 富文本资源、版本管理、附件/PDF 关联 |
+| 分数线 | 可联调 | 院校、专业、动态字段、记录、年份、趋势、后台维护、JSON/CSV/Excel 导入 | 复杂筛选、AI 择校上下文 |
+| 视频解析 | 可联调 | 单题视频、批量查询、后台视频绑定、JSON/CSV/Excel 导入、会员播放权限、播放次数扣减、签名 URL 和播放日志 | 深度防盗链、动态水印、播放统计 |
 | 资料下载 | 部分完成 | 资源台账、SVIP 权限校验、`local_dev`/阿里云 OSS/腾讯 COS/Supabase Storage 上传下载签名、上传确认、PDF/图片预览签名、assets worker 复检异常下架 | PDF 渲染、CDN 防盗链、杀毒扫描、视频水印 |
 | 会员与订单 | 可联调 | 下单、订单详情/状态轮询、优惠券领取/抵扣、零元订单自动开通、手工确认权限保护、激活码预检查/兑换、微信支付、支付宝、微信/支付宝发起退款、微信/支付宝退款查询确认、微信/支付宝退款通知 webhook、支付/退款补偿 worker、权益发放 | 完整资金流水对账、异常订单运营台 |
 | 登录认证 | 可联调 | 短信 mock、阿里云/腾讯云短信 adapter、迁移期 session、Supabase Auth JWT、微信小程序登录、OAuth 配置表 | 微信网页登录、QQ 登录、手机号换绑、真实生产账号联调 |
 | 销售/代理/CRM | 基础完成 | 邀请码、首绑保护、团队关系、销售统计、CRM 入队 | 小程序码真实生成、分佣结算、钉钉/飞书/企微 worker |
-| 内容导入 | 可联调 | 题目、单词、知识手册、分数线、视频 JSON preview/import、issue、job、审计、幂等 | Excel/CSV 解析、大批量异步 worker、导入后复检 |
+| 内容导入 | 可联调 | 题目、单词、知识手册、分数线、视频 JSON/CSV/Excel preview/import、issue、job、审计、幂等、`executionMode=async` 和 imports worker | 导入后复检、模板下载/字段映射 |
 | 数据看板 | 可联调 | 租户 dashboard 聚合接口，收益、注册、学习、内容、激活码、反馈、趋势、24h 活跃、套餐销量和运营动态 | 预聚合 worker、缓存、慢 SQL 监控和销售转化看板 |
 | AI 择校推荐 | 未开始 | 暂无 | 数据上下文、AI JSON schema、报告渲染、PDF 生成 |
 | Taro 前端 | 未开始 | 旧 Web 已有新 API 适配雏形 | `apps/taro`、跨端 API client、H5/小程序页面和端到端测试 |
@@ -87,7 +87,7 @@
 - XPay 或其它实际支付网关 adapter。
 - 阿里云/腾讯云短信、微信小程序登录、微信网页登录、QQ 登录。
 - 公共题库/地区题库版本同步，租户按 SaaS 套餐购买地区、科目和题库范围的更细计费策略。
- Excel/CSV 解析、大批量异步导入和导入后复检。
+- 导入后复检和导入模板/字段映射 UI；大批量导入已支持 `executionMode=async`，前端按 job 状态轮询。
 - 视频深度防盗链、动态水印和播放统计。
 - 数据看板 API：收益、注册趋势、答题次数、收入趋势、题型分布、题目总量、套餐销量、24h 活跃。

--- a/docs/refactor/backend-progress.md
+++ b/docs/refactor/backend-progress.md
@@ -32,6 +32,8 @@
 - 已新增 commerce worker 和 `npm run test:worker:commerce`，用于补偿查询微信/支付宝支付、处理中退款和漏通知场景；支付成功会幂等更新订单/支付并开通权益，退款成功会幂等更新退款/订单/支付并在全额退款时撤销订单权益，测试覆盖密钥不泄露和重复执行不重复开通。
 - 已新增 assets worker 和 `npm run test:worker:assets`，用于复检 `content_assets` 托管对象元数据；正常资源会写入复检证据，异常资源会自动下架为 `draft`、标记 `upload_status=failed`，并记录审计与安全标记。
 - 已新增分数线/视频 JSON 导入接口和集成测试：分数线支持字段、院校、专业、记录、动态字段值；视频支持视频元数据、资源引用、访问模式和题目绑定，全部复用 `content_import_jobs/items/issues` 管线。
+- 已新增 CSV/Excel 导入解析层：题目、单词、知识手册、分数线和视频都可通过 `sourceFormat=csv/excel` 先解析为规范 payload，再进入同一套 preview/import、逐行 issue、幂等和审计管线；分数线支持多 Sheet Excel。
+- 已新增 imports worker 和 `npm run test:worker:imports`：确认导入时可传 `executionMode=async`，API 将 preview job 排队为 `pending`，worker 复用同一导入 executor 消费任务，支持抢占锁、attempt/backoff、失败重试、清锁和审计。

 ## 已验证接口

@@ -251,11 +253,11 @@ GET  /api/tenant-admin/audit-logs
 - 内容资源当前完成台账、租户后台维护、学生端 SVIP 下载权限，以及 `local_dev`、阿里云 OSS、腾讯 COS、Supabase Storage 的上传/下载签名 provider；上传确认和 assets worker 已支持对象元数据校验/复检。PDF 预览渲染、防盗链、水印和安全扫描仍需继续补。
 - 题库内容导航当前以 `content_entries/content_nodes` 为主模型，可表达“入口 -> 多级分类 -> 院校/专业/学科/销售意向标记”；题目集合和练习方式由 `question_collections/practice_blueprints` 管理，练习 session 会保存当次题目 ID 快照。
 - 练习访问控制由 `content_entries/content_nodes/question_collections/practice_blueprints` 的 `accessRules` 合并决定；普通用户消耗 `practice_daily_usage`，事件写入 `practice_access_events`，SVIP/staff 不消耗免费额度。
- 批量导入当前支持题目、单词、知识手册、分数线、视频 JSON 预览、逐行 issue、job/item 台账、执行导入、幂等跳过，并可落到新内容入口、分类节点、分数线表或题目视频绑定。旧单词模板的 `vocabulary_units_示例数据` / `vocabulary_示例数据`、知识手册的书籍/章节/小节/知识点嵌套结构都由后端规范化。Excel/CSV 和大批量异步导入会继续复用同一套 `content_import_jobs` 管线。
+- 批量导入当前支持题目、单词、知识手册、分数线、视频 JSON/CSV/Excel 预览、逐行 issue、job/item 台账、同步执行或 `executionMode=async` 异步执行、幂等跳过，并可落到新内容入口、分类节点、分数线表或题目视频绑定。旧单词模板的 `vocabulary_units_示例数据` / `vocabulary_示例数据`、知识手册的书籍/章节/小节/知识点嵌套结构都由后端规范化。导入后复检、模板下载和字段映射 UI 后续补齐。

 ## 下一步

-1. 完善内容导入和文件上传：Excel/CSV 解析、大批量异步导入、导入后复检，PDF 预览渲染、防盗链、杀毒扫描和视频水印。
+1. 完善内容导入和文件上传：导入后复检、模板下载/字段映射 UI，PDF 预览渲染、防盗链、杀毒扫描和视频水印。
 2. 接入真实短信 provider：阿里云/腾讯云，密钥放 `app_private.tenant_secrets` 或生产 Vault。
 3. 接入真实 OAuth provider：微信网页、微信小程序、QQ，并处理旧 PocketBase 身份映射。
 4. 补完整资金流水对账、异常订单运营台和优惠券核销报表；支付/退款补偿、退款查询确认和退款通知主链路已完成。
@@ -269,5 +271,6 @@ npm run test:api
 npm run test:worker:crm
 npm run test:worker:commerce
 npm run test:worker:assets
+npm run test:worker:imports
 npm run check:refactor
 ```
--- a/docs/refactor/blueprint-coverage.md
+++ b/docs/refactor/blueprint-coverage.md
@@ -18,9 +18,9 @@
 | 平台超级管理员 | 部分完成 | 租户管理、SaaS 套餐、订阅、账单、服务费收款、用量记录 | 公共题库披露策略、地区/全国套餐权限、平台侧主题模板库、平台审计 |
 | 租户品牌和域名 | 基础完成 | 品牌、Logo、主题 JSON、公开资源、域名、租户公开配置 | 三套默认主题、主题可视化编辑、图标/图片上传 |
 | 租户成员权限 | 可联调 | owner/admin/operator/teacher/sales/agent/student，权限矩阵，成员启停，角色模板、菜单/模块/字段权限、班级/学生范围权限和审计查询 | 前端权限 UI、更细的数据范围组合 |
-| 题库内容维护 | 可联调 | 内容入口、任意深度分类树、院校/专业/学科/销售意向标记、题目集合、顺序/随机/全真模拟练习蓝图、题目录入/更新、题目/单词/知识手册/分数线/视频 JSON 预览导入、视频绑定、分数线、单词、知识手册后台 API、公共题库授权和采纳快照 | Excel/CSV 批量导入、公共题库版本同步、可视化拖拽排序前端 |
+| 题库内容维护 | 可联调 | 内容入口、任意深度分类树、院校/专业/学科/销售意向标记、题目集合、顺序/随机/全真模拟练习蓝图、题目录入/更新、题目/单词/知识手册/分数线/视频 JSON/CSV/Excel 预览导入、`executionMode=async` 导入 worker、视频绑定、分数线、单词、知识手册后台 API、公共题库授权和采纳快照 | 导入后复检、模板/字段映射、公共题库版本同步、可视化拖拽排序前端 |
 | 学生刷题 | 基础完成 | 内容入口、分类树、题目集合、顺序刷题、随机刷题、全真模拟 session 题目快照、答题、错题本、收藏夹、模考交卷评分报告、错题复习计划、排行榜 | 专项练习策略、题型统计深度分析、排行榜防刷/预聚合 |
-| 背单词 | 基础完成 | 单词单元、单词、进度、收藏、统计、每日复习计划、旧模板/新模板 JSON 预览导入、内容导航绑定、排行榜 | Excel 导入、更细复习参数 |
+| 背单词 | 基础完成 | 单词单元、单词、进度、收藏、统计、每日复习计划、旧模板/新模板 JSON/CSV/Excel 预览导入、内容导航绑定、排行榜 | 更细复习参数 |
 | 知识手册 | 基础完成 | 科目、章节、条目只读与后台维护、书籍/章节/小节/知识点嵌套 JSON 预览导入、内容导航绑定 | 富文本资源、版本管理、附件/PDF 关联、Excel/Markdown 批量解析 |
 | 分数线 | 可联调 | 字段、院校、专业、记录、趋势、年份、JSON 批量导入 | 复杂动态筛选、AI 择校数据上下文 |
 | 视频解析会员 | 可联调 | 题目视频、批量查询、后台绑定、视频 JSON 导入、SVIP 权限、播放次数扣减、签名 URL、播放日志 | 深度防盗链、动态水印、播放统计 |
@@ -36,7 +36,7 @@

 ## 接下来优先级

-1. 完善内容导入和对象存储：Excel/CSV 解析、大批量异步导入、导入后复检、CDN 防盗链、杀毒扫描和视频水印。
+1. 完善内容导入和对象存储：导入后复检、模板下载/字段映射 UI、CDN 防盗链、杀毒扫描和视频水印。
 2. 公共题库/地区题库授权：已完成披露和采纳快照；继续补版本同步、租户自改冲突处理和按 SaaS 套餐限制地区。
 3. 学习统计增强：排行榜防刷/预聚合、断点续练、专项练习策略和更细题型分析。
 4. 视频会员控制：深度防盗链、水印和播放统计。
--- a/docs/refactor/content-import-contract.md
+++ b/docs/refactor/content-import-contract.md
@@ -50,6 +50,59 @@ GET  /api/tenant-content/imports/issues
 - `content_import_issues`
 - `audit_logs`

+## 格式支持
+
+当前题目、单词、知识手册、分数线和视频导入均支持：
+
+- `sourceFormat=json`：直接提交规范 JSON 或兼容旧模板。
+- `sourceFormat=csv`：提交 `csvText`、`fileContent`、`payload` 或 `fileBase64`，后端按表头归一化。
+- `sourceFormat=excel`：提交 `.xlsx` 的 `fileBase64`，可选 `sheetName` 或 `sheetIndex`；多 Sheet 会被解析进同一个 `content_import_jobs`。
+- 同步导入默认在 API 请求内完成；大批量导入可在确认导入时传 `executionMode=async`，API 会把 job 置为 `pending`，由 imports worker 后台消费。
+
+表格导入安全边界：
+
+- 单文件最大 8MB。
+- 单次最多解析 5000 行、160 列。
+- 单个单元格最多保留 100000 字符。
+- 后端只保存解析后的原始行和规范化 payload，不把 `fileBase64` 长期写入数据库。
+- 任务列表会返回 `sourceFormat`、`executionMode` 和 `parserMetadata`，前端可展示解析器、Sheet、行数等信息。
+
+异步导入调用方式：
+
+```json
+{
+  "previewJobId": "uuid",
+  "executionMode": "async",
+  "allowPartial": false
+}
+```
+
+异步导入状态流：
+
+```text
+preview -> pending -> importing -> completed
+preview -> pending -> importing -> completed_with_errors
+preview -> pending -> failed
+```
+
+worker 命令：
+
+```bash
+npm --workspace @tiku-saas/worker run imports:once
+```
+
+前端提交异步导入后不要重复同步执行同一 job；只需要轮询 `GET /api/tenant-content/imports` 并用 `GET /api/tenant-content/imports/issues` 展示问题行。worker 会按 `attempt_count/max_attempts` 记录重试，失败时写入 `errorMessage` 和审计日志。
+
+推荐 CSV/Excel 表头：
+
+| 类型 | 常用表头 |
+| --- | --- |
+| 题目 | `legacyId`、`题型/type`、`题干/content`、`选项A`-`选项H`、`答案`、`解析`、`难度`、`标签` |
+| 单词 | `unitLegacyId`、`unitName`、`wordLegacyId`、`word`、`phonetic`、`meaning`、`example`、`difficulty`、`tags` |
+| 知识手册 | `subjectLegacyId`、`subjectName`、`chapterLegacyId`、`chapterName`、`sectionName`、`entryLegacyId`、`title`、`content`、`summary`、`tags` |
+| 分数线 | 多 Sheet 推荐 `fields`、`schools`、`majors`、`records`；记录 Sheet 可包含任意动态字段列 |
+| 视频 | `legacyId`、`title`、`videoUrl`、`thumbnailUrl`、`durationSeconds`、`subjectId`、`questionId` 或 `legacyQuestionId`、`accessMode` |
+
 ## 单词导入

 推荐新格式：
@@ -262,5 +315,5 @@ GET  /api/tenant-content/imports/issues

 ## 下一步

- 增加 Excel/CSV 解析入口，但解析后仍进入同一套 preview/import 管线。
- 增加异步 worker，处理大批量导入、重试和导入后校验。
+- 增加导入后校验/复检，确认导入行数、目标表记录、题目集合绑定和视频绑定一致。
+- 增加导入模板下载接口和后台可视化字段映射器。
--- a/docs/refactor/frontend-handoff-index.md
+++ b/docs/refactor/frontend-handoff-index.md
@@ -1,6 +1,6 @@
 # 前端交接索引

-更新时间：2026-06-28
+更新时间：2026-06-29

 这份文件是给 Taro/H5/小程序前端同事的入口。当前仓库的前端重构建议从 `apps/taro` 新建工程开始，不再把旧 React/Vite 前端搬回根目录继续开发。

@@ -45,7 +45,7 @@
 - 不要把“Supabase 支持前端 Data API”误解为“本项目所有业务表都由 Taro 直写”；订单、支付、权益、租户后台、导入、CRM、私有资源必须走 RPC、`apps/api`、Edge Function 或 worker 这类后端命令层。
 - 真实短信、微信登录、QQ 登录、微信支付、支付宝支付 provider 还未正式接完。
 - 对象存储已完成签名 provider、上传后校验、PDF/图片预览和资源复检 worker，但 CDN 防盗链、视频水印和杀毒扫描还要补。
- 分数线/视频 JSON 导入已可联调；大批量 Excel/CSV 解析和异步导入 worker 还未完成。
+- 题目/单词/知识手册/分数线/视频 JSON/CSV/Excel 导入已可联调；大批量导入可传 `executionMode=async` 交给 imports worker，前端还要补上传预览、排队轮询、问题行展示、模板下载和字段映射 UI。
 - 数据看板、分佣结算和勋章手动发放基础 API 已可联调；勋章自动发放、分佣真实打款/导出/凭证、AI 择校、主题模板市场等仍是后续商用增强项。

 ## 前后端协作建议
--- a/docs/refactor/implementation-status.md
+++ b/docs/refactor/implementation-status.md
@@ -4,7 +4,7 @@

 ## 当前结论

-当前重构已经完成了 Supabase/PostgreSQL 多租户底座、核心业务表、PocketBase 数据导入器雏形、学生端核心 API、租户后台 API、平台后台 SaaS 账务 API、内容资产/题目/单词/知识手册/分数线/视频 JSON 批量导入基础闭环、题库入口/任意深度分类/题目集合/练习蓝图/组卷快照基础闭环，以及本地 Docker/API 构建验证。
+当前重构已经完成了 Supabase/PostgreSQL 多租户底座、核心业务表、PocketBase 数据导入器雏形、学生端核心 API、租户后台 API、平台后台 SaaS 账务 API、内容资产/题目/单词/知识手册/分数线/视频 JSON/CSV/Excel 批量导入基础闭环、异步导入 worker、题库入口/任意深度分类/题目集合/练习蓝图/组卷快照基础闭环，以及本地 Docker/API 构建验证。

 但这还不是完整商用交付状态，也不能说旧项目核心功能已经全部重构完成。现在更准确的状态是：后端商用架构骨架已经立住，核心业务正在按模块补齐。部分功能已经有可调用 API，部分功能只有数据模型和导入映射，部分功能还没有前端/自动化测试闭环。

@@ -24,7 +24,7 @@
 | 模块 | 数据模型 | PocketBase 导入 | API | 自动化测试 | 当前状态 |
 | --- | --- | --- | --- | --- | --- |
 | 多租户隔离 | 已建 `tenants`、`tenant_domains`、`tenant_branding`、`tenant_settings`、RLS 基础 | 部分支持 | 租户解析、品牌、域名、支付账户、登录 provider、平台建租户已实现 | 核心 API 集成测试含租户隔离断言 | 基础可用，正式 JWT/RLS 权限闭环未完成 |
-| 刷题题库 | 已建题库、题目、题目版本、内容入口、任意深度分类树、考试意向标记、题目集合、练习蓝图、导入任务台账、公共题库授权/采纳表 | 已支持核心映射，JSON 导入可落到新入口/节点/集合 | 题目列表、内容入口、分类树、集合题目、顺序/随机/全真模拟 session、答题提交、租户后台题目录入/更新、JSON 预览/导入、平台公共题库授权、租户采纳快照已实现 | 核心 API 集成测试含导航、组卷、导入、公共题库授权和采纳后组卷断言 | 新题库导航和组卷基础闭环可跑，公共题库采纳快照可联调；Excel 导入、公共题库全量/增量版本同步仍需补齐 |
+| 刷题题库 | 已建题库、题目、题目版本、内容入口、任意深度分类树、考试意向标记、题目集合、练习蓝图、导入任务台账、公共题库授权/采纳表 | 已支持核心映射，JSON/CSV/Excel 导入可落到新入口/节点/集合 | 题目列表、内容入口、分类树、集合题目、顺序/随机/全真模拟 session、答题提交、租户后台题目录入/更新、JSON/CSV/Excel 预览/导入、异步导入 worker、平台公共题库授权、租户采纳快照已实现 | 核心 API 集成测试含导航、组卷、导入、公共题库授权和采纳后组卷断言 | 新题库导航和组卷基础闭环可跑，公共题库采纳快照可联调；公共题库全量/增量版本同步、导入后复检仍需补齐 |
 | 错题本 | 已建 `wrong_questions` | 已支持旧错题归一化 | 错题列表、答题自动入错题、移出错题已实现 | 仅烟测 | 基础功能已实现，复习计划和统计未完成 |
 | 收藏夹 | 已建 `favorite_questions` | 已支持旧收藏归一化 | 收藏/取消收藏、收藏列表已实现 | 仅烟测 | 基础功能已实现 |
 | 用户订阅/题库会员/SVIP | 已建 `orders`、`payments`、`entitlements`、`svip_plans`、激活码 | 已映射旧 SVIP/会员权益 | 下单、订单详情/状态轮询、手工支付确认权限保护、微信/支付宝支付、微信/支付宝发起退款、微信/支付宝退款查询确认、微信/支付宝退款通知 webhook、激活码预检查/兑换、优惠券抵扣、零元订单自动开通、权益查询已实现 | API 集成测试 | 商城主链路可联调，对账、支付补偿和异常订单自动处理待补 |
@@ -36,7 +36,7 @@
 | 个人中心 | 已建 `student_profiles`、会员权益、订单、练习记录、`badges/user_badges` | 已支持部分用户资料和勋章导入 | 个人资料、目标院校/专业、会员状态、最近练习、统计聚合、签到积分、题目反馈、考试倒计时、勋章 API 已实现 | API 集成测试 | 学生端基础个人中心已实现，账号绑定/换绑、学习报告可视化和更细任务系统待补 |
 | 活动/优惠 | 已建优惠券、激活码、激活码批次、banner、FAQ、公告、勋章等基础表 | 部分支持 | banner/FAQ/公告只读与租户后台维护、激活码预检查/兑换、激活码批次、批量生成激活码、优惠券维护、前台领取/下单抵扣、勋章维护和手动发放已实现 | 核心 API 集成测试 | 基础运营后台可用，勋章自动发放、复杂活动规则、营销自动化、核销报表待补 |
 | 销售/代理客资追踪 | 已建推荐码、首绑客资、团队关系、小程序码缓存、CRM 队列 | 旧 `referral_tracks` 已有映射基础 | 邀请码、扫码/分享事件、首绑保护、销售统计、客资明细、手动补绑、团队关系、CRM 配置/队列、CRM worker 推送已实现 | 核心 API 集成测试、CRM worker 集成测试 | 增长链路基础可用，真实微信小程序码、CRM 分配策略、富卡片和销售转化看板待补 |
-| 租户后台 | 已建品牌、域名、设置、支付账户、登录 provider、私密密钥表、成员、审计日志、资源台账、导入台账、内容导航台账 | 不适用 | 概览、品牌、设置、域名、支付账户、登录配置、密钥掩码、活动内容、兑换码/优惠券、成员管理、权限矩阵、审计查询、内容入口/分类树/题目集合/练习蓝图维护、资源管理、题目/单词/知识手册/分数线/视频 JSON 导入已实现 | 核心 API 集成测试含角色/权限/租户隔离/密钥不泄露/导航/组卷/资源与导入断言 | 租户配置与运营闭环可用，前端权限 UI、Excel/CSV 导入和大批量异步导入待补 |
+| 租户后台 | 已建品牌、域名、设置、支付账户、登录 provider、私密密钥表、成员、审计日志、资源台账、导入台账、内容导航台账 | 不适用 | 概览、品牌、设置、域名、支付账户、登录配置、密钥掩码、活动内容、兑换码/优惠券、成员管理、权限矩阵、审计查询、内容入口/分类树/题目集合/练习蓝图维护、资源管理、题目/单词/知识手册/分数线/视频 JSON/CSV/Excel 同步/异步导入已实现 | 核心 API 集成测试含角色/权限/租户隔离/密钥不泄露/导航/组卷/资源与导入断言 | 租户配置与运营闭环可用，前端权限 UI、导入后复检和字段映射操作台待补 |
 | 平台后台 | 已建 SaaS 套餐、订阅、账单、服务费、用量 | 不适用 | 租户管理、账单、收款确认、用量记录、平台管理员 Supabase JWT 鉴权已实现 | API 集成测试 | 平台收费链路骨架可用，平台审计报表/自动计费待补 |
 | 登录认证 | 已建短信验证码、会话、OAuth provider 配置表，并支持 `auth_user_id` 映射 | 旧用户映射已预留 | 短信 mock 登录、迁移期 session、Supabase JWT 验签映射、微信小程序登录主链路已实现 | API 集成测试 | H5 Supabase Auth 可联调；真实短信/微信网页/QQ 登录生产联调待补 |
 | 数据导入 | 已建立 importer、risk report、validate | 已覆盖多类旧集合 | 命令行导入/校验 | `pb:import:validate` | 基础工具可用，需用真实完整数据做多轮 dry-run |
@@ -268,7 +268,7 @@ platform-admin:
 1. 正式鉴权：API 已支持 Supabase Auth JWT；生产前继续做真实云端 Auth/JWKS 回归、RLS 深测，并关闭 `x-user-id`、`x-platform-admin-key` 兼容入口。
 2. 国内能力接入：短信、微信小程序登录、微信支付、支付宝支付、发起退款、退款查询确认和退款通知 webhook 的租户级配置入口与本地 provider 验证已具备；微信网页登录、QQ 登录、真实生产账号联调、对账和支付补偿仍需实现。
 3. 核心缺口 API：学生端个人中心、分数线、题目视频详情、背单词进度/收藏、签到积分、题目反馈和勋章已补基础 API；下一步重点是账号绑定、学习报告可视化、后台统计和真实业务验收。
-4. 后台能力：题库录入、题目/单词/知识手册/分数线/视频 JSON 批量导入、资源台账、视频绑定、知识手册维护、分数线维护、品牌/商户/登录/活动/兑换码配置、销售客资、CRM 队列、成员权限、审计查询已补 API；Excel/CSV 导入、大批量异步导入和前端操作台待补。
+4. 后台能力：题库录入、题目/单词/知识手册/分数线/视频 JSON/CSV/Excel 同步/异步批量导入、资源台账、视频绑定、知识手册维护、分数线维护、品牌/商户/登录/活动/兑换码配置、销售客资、CRM 队列、成员权限、审计查询已补 API；导入后复检、模板下载/字段映射和前端操作台待补。
 5. 自动化测试：已建立核心 API、租户隔离、权限矩阵、后台维护、资源/导入、微信/支付宝支付 webhook、优惠券/激活码/订单状态集成测试；仍需真实数据导入回归、退款对账和前端端到端测试。
 6. Taro 前端：建立 `apps/taro` 或等价跨端应用，把 H5 和小程序统一走同一套 API client。
 7. 运维交付：生产环境变量、备份恢复、日志监控、异常告警、数据库迁移流程、灰度发布、回滚预案。
@@ -277,7 +277,7 @@ platform-admin:

 为了先把旧项目核心业务补齐，再进入支付/短信等商用关键模块，建议按下面顺序继续：

-1. 完善内容导入和文件上传：Excel/CSV 解析、大批量异步导入、导入后复检、CDN 防盗链、杀毒扫描，并把 JSON 导入扩展为异步 worker。
+1. 完善内容导入和文件上传：导入后复检、模板下载/字段映射 UI、CDN 防盗链、杀毒扫描。
 2. 补公共题库版本同步 worker、租户套餐地区/科目/题库范围限制、主题模板系统。
 3. 补学习统计增强：排行榜防刷/预聚合、断点续练、专项练习策略和更细题型分析。
 4. 补视频商用控制：深度防盗链、动态水印和播放统计。
--- a/docs/refactor/legacy-feature-gap-matrix.md
+++ b/docs/refactor/legacy-feature-gap-matrix.md
@@ -58,7 +58,7 @@
 | 优惠券 | 已覆盖 | 后台配置、前台领取、同用户同券幂等、下单抵扣、全额优惠自动开通权益已有；复杂活动规则和核销报表待补 |
 | 激活码 | 已覆盖 | 批次、生成、预检查、兑换、自用码拒绝、地区校验主链路已有 |
 | 勋章管理 | 部分覆盖 | 后台勋章维护、手动发放、重复发放幂等、学生端勋章展示和权限隔离已覆盖；自动发放规则、积分活动联动和前端运营 UI 待补 |
-| 题库录入 | 已覆盖 | 单题创建/更新、题目/单词/知识手册/分数线/视频 JSON 导入、集合/蓝图已有；Excel/CSV 和异步大批量导入待补 |
+| 题库录入 | 已覆盖 | 单题创建/更新、题目/单词/知识手册/分数线/视频 JSON/CSV/Excel 同步/异步导入、集合/蓝图已有；导入后复检、模板下载和字段映射 UI 待补 |
 | 题库导出 PDF/Word/JSON | 未覆盖 | 旧前端有导出组件；新后端需决定服务端导出、导出水印和权限审计 |
 | 题型分组/模拟卷配置 | 部分覆盖 | question_type_groups 表和 blueprint 有基础；后台配置体验待补 |
 | 背单词维护 | 已覆盖 | 单元/单词 CRUD 和导入已有 |
@@ -98,7 +98,7 @@
 1. 排行榜增强：刷题、模考、背单词、积分排行榜主接口已有；还需防刷、日/周榜预聚合、运营后台排名看板。
 2. 账号设置完整流：头像上传、绑定/更换手机号、微信/QQ 账号合并、密码/邮箱能力。
 3. 题库导出：PDF/Word/JSON 导出、水印、导出审计和权限控制。
-4. 导入扩展：分数线/视频 JSON 导入已补齐；仍缺 Excel/CSV 解析、大批量异步 worker 和导入后复检。
+4. 导入扩展：题目/单词/知识手册/分数线/视频已支持 JSON、CSV 和 Excel 预览导入，并可用 `executionMode=async` 进入 imports worker；仍缺导入后复检和模板下载/字段映射 UI。
 5. 公共题库商业化：平台公共/地区题库授权和租户快照采纳已完成基础闭环；还需版本同步、租户自改冲突处理和运营后台 UI。
 6. CRM/销售结算：CRM worker、分佣规则、结算单、审核和打款状态基础闭环已完成；仍缺轮询/定向分配、打款导出、凭证和销售结算看板。
 7. 题目反馈增强：处理通知、消息提醒、问题聚合统计和内容修复闭环。
@@ -117,7 +117,7 @@

 1. 微信/支付宝支付和 webhook 幂等。
 2. 对象存储 PDF 预览、视频深度防盗链、动态水印。
-3. Excel/CSV 解析、大批量异步导入和导入后复检。
+3. 导入后复检、模板下载和字段映射 UI。
 4. 数据看板预聚合 worker、销售/代理转化看板和分佣结算。
 5. 公共题库版本同步、租户采纳后的更新策略和同步 worker。

--- a/docs/refactor/next-development-todo.md
+++ b/docs/refactor/next-development-todo.md
@@ -16,7 +16,7 @@
 - 练习组卷：`question_collections/practice_blueprints` 支持顺序、随机、全真模拟快照。
 - 模考报告与学习统计：`practice_session_reports/practice_session_report_sections` 支持交卷、评分、题型/小节统计、错题解析汇总和历史查询；`/api/learning/stats`、`trend`、`practice-sessions/history`、`wrong-questions/review-plan` 可支撑个人中心和学习报告基础页。
 - 练习访问控制：`practice_daily_usage/practice_access_events` 支持免费每日额度、SVIP 范围校验、SVIP-only 内容拦截和答题 session 快照保护。
- 内容导入：题目、单词、知识手册、分数线、视频 JSON 预览、校验、导入、幂等、审计。
+- 内容导入：题目、单词、知识手册、分数线、视频 JSON/CSV/Excel 预览、校验、导入、幂等、审计。
 - 租户组织范围：班级、班级成员、教师/班主任/助教/学生分组，教师按负责班级查看学生，字段权限可脱敏学生手机号。
 - 学生运营管理：学生批量 upsert、禁用/恢复、批量分班、备注、跟进任务已完成接口和集成测试；后续补批量 CRM 推送和自动学习督导。
 - 旧题库运营缺口已补一批：考试日期/倒计时、题目反馈/纠错处理、每日签到积分和积分流水、学习排行榜已完成接口和集成测试。
@@ -75,9 +75,9 @@
   - 旧 PocketBase 用户账号和新身份体系的映射/补绑。

 3. 导入体系扩展
-   - Excel/CSV 导入。
-   - 分数线/视频导入已完成 JSON preview/import；继续补 Excel/CSV 到规范 JSON 的解析适配。
-   - 大批量导入异步 worker、重试、导入后校验。
+   - 已完成题目、单词、知识手册、分数线、视频的 CSV/Excel 到规范 JSON 解析适配。
+   - 继续补大批量导入异步 worker、重试、导入后校验。
+   - 继续补模板下载、字段映射 UI 和导入前抽样校验。

 4. 公共题库和租户授权
   - 已完成平台公共题库/地区题库的基础授权、租户采纳和题目快照复制。
@@ -206,5 +206,5 @@
 2. 云服务器部署 Supabase/PostgreSQL 和 API，配置对象存储生产环境变量，跑 `check:refactor` 的远程等价测试。
 3. 导出现有 PocketBase 数据，做完整 dry-run 迁移。
 4. 开始 `apps/taro`，先接租户解析、首页、题库、背单词、知识手册。
-5. 并行补对象存储、真实登录、完整资金流水对账和公共题库版本同步 worker。
+5. 并行补对象存储、真实登录、完整资金流水对账、题库导出和公共题库版本同步 worker。
 6. 前后端联调通过后，再做支付、权限、数据导入、资料下载、视频播放的商用验收。
--- a/docs/refactor/taro-frontend-integration.md
+++ b/docs/refactor/taro-frontend-integration.md
@@ -713,7 +713,7 @@ content_entries

 ## 租户内容导入对接

-租户后台导入统一使用 preview -> issues -> import 流程，前端不要直接写 Supabase 表或绕过 `apps/api`。
+租户后台导入统一使用 preview -> issues -> import 流程，前端不要直接写 Supabase 表或绕过 `apps/api`。当前 JSON、CSV 和 Excel 都进入同一套后端规范化、逐行 issue、幂等和审计管线。

 当前可联调：

@@ -734,14 +734,63 @@ GET  /api/tenant-content/imports/issues

 前端流程：

-1. 上传或粘贴 JSON，先调用对应 preview。
+1. 上传或粘贴 JSON/CSV/Excel，先调用对应 preview。
 2. 展示 `job.totalCount/validCount/errorCount/warningCount`。
-3. 展示逐行 `issues`，错误行必须让运营修正；如果后端允许 `allowPartial`，也要二次确认。
-4. 用户确认后调用 import；导入完成后刷新内容列表、分数线列表或题目视频列表。
+3. 展示 `job.sourceFormat`、`job.parserMetadata`、逐行 `issues`，错误行必须让运营修正；如果后端允许 `allowPartial`，也要二次确认。
+4. 小批量确认后直接调用 import；大批量确认时传 `executionMode=async` 排队，前端轮询 job 状态。
+5. 导入完成后刷新内容列表、分数线列表或题目视频列表。
+
+CSV 请求示例：
+
+```json
+{
+  "sourceFormat": "csv",
+  "sourceName": "questions.csv",
+  "csvText": "legacyId,题型,题干,选项A,选项B,答案\nq1,choice,题干,A,B,B",
+  "subjectId": "...",
+  "categoryId": "...",
+  "entryId": "...",
+  "contentNodeId": "...",
+  "collectionId": "..."
+}
+```
+
+Excel 请求示例：
+
+```json
+{
+  "sourceFormat": "excel",
+  "sourceName": "scoreline.xlsx",
+  "fileBase64": "<xlsx base64>",
+  "sheetName": "records",
+  "regionId": "..."
+}
+```
+
+异步确认导入示例：
+
+```json
+{
+  "previewJobId": "uuid",
+  "executionMode": "async",
+  "allowPartial": false
+}
+```
+
+异步导入状态：
+
+```text
+pending/importing：展示处理中，不允许重复同步执行同一 job。
+completed：刷新目标内容列表。
+completed_with_errors：刷新成功内容，并提示查看 issues。
+failed/rejected：展示 errorMessage 和 issues，允许运营修正后重新 preview。
+```
+
+前端文件限制应与后端一致：单文件最大 8MB，最多 5000 行、160 列。后端不会保存原始 `fileBase64`，但前端仍不要把含隐私的导入文件写入长期缓存。

 分数线导入前端注意：

- 后端支持 `fields/schools/majors/records` 分桶，也支持 `items` 列表。
+- 后端支持 `fields/schools/majors/records` 分桶，也支持 `items` 列表；Excel 可用 `fields`、`schools`、`majors`、`records` 多 Sheet。
 - 页面筛选字段仍以 `/api/scoreline/fields` 为准，不要从导入 JSON 临时生成筛选 UI。
 - `record` 至少需要 `schoolId`、`schoolLegacyId` 或 `schoolName`，否则 preview 会返回 issue。

@@ -1081,7 +1130,7 @@ ACTIVATION_CODE_REGION_MISMATCH
 - 角色模板：`GET/PUT /api/tenant-admin/role-templates`、`POST /api/tenant-admin/role-templates/disable`
 - 内容入口/分类树/题目集合/练习蓝图
 - 题目/单词/知识手册/分数线/视频维护
- 题目/单词/知识手册/分数线/视频 JSON 导入 preview/import/issues
+- 题目/单词/知识手册/分数线/视频 JSON/CSV/Excel 导入 preview/import/issues
 - Banner/FAQ/公告/激活码/优惠券
 - 勋章：`GET/PUT /api/tenant-admin/badges`、`GET/POST /api/tenant-admin/badge-grants`
 - 考试日期：`GET/PUT /api/tenant-admin/exam-dates`
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -36,6 +36,7 @@
    "test:worker:crm": "npm run db:smoke-seed && npm run build:worker && node scripts/crm-worker-integration-test.js",
    "test:worker:commerce": "npm run db:smoke-seed && npm run build:worker && node scripts/commerce-worker-integration-test.js",
    "test:worker:assets": "npm run db:smoke-seed && npm run build:worker && node scripts/asset-worker-integration-test.js",
+    "test:worker:imports": "npm run db:smoke-seed && npm run build:worker && node scripts/import-worker-integration-test.js",
    "test:api:remote": "node scripts/api-integration-test.js",
    "pb:schema:summary": "npm --workspace @tiku-saas/import-pocketbase run schema:summary",
    "pb:schema:risk": "npm --workspace @tiku-saas/import-pocketbase run schema:risk",
--- a/scripts/api-integration-test.js
+++ b/scripts/api-integration-test.js
@@ -4,6 +4,7 @@ import { spawn } from 'node:child_process';
 import http from 'node:http';
 import net from 'node:net';
 import { SignJWT } from 'jose';
+import ExcelJS from 'exceljs';

 const DEFAULT_DATABASE_URL = 'postgresql://postgres:postgres@127.0.0.1:54322/postgres';
 const MAIN_TENANT_ID = process.env.TENANT_ID || '00000000-0000-0000-0000-000000000001';
@@ -2794,6 +2795,102 @@ async function testTenantContentAssetsAndImports() {
    'catalog should expose imported question through the new collection binding',
  );

+  const questionCsv = [
+    ['legacyId', '题型', '题干', '选项A', '选项B', '选项C', '选项D', '答案', '解析', '难度', '标签'].join(','),
+    ['integration-import-csv-choice-001', 'choice', 'CSV导入题：多租户数据隔离应主要依赖什么？', '前端隐藏菜单', '后端权限和RLS', '浏览器缓存', '静态页面', 'B', '最终权限以后端和RLS为准。', '2', 'csv|import'].join(','),
+  ].join('\n');
+  const csvQuestionPreview = await request('/api/tenant-content/imports/preview/questions', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: {
+      sourceFormat: 'csv',
+      sourceName: 'questions.csv',
+      csvText: questionCsv,
+      subjectId: ids.subject,
+      categoryId: ids.category,
+      regionId: ids.region,
+      entryId: ids.contentEntry,
+      contentNodeId: ids.contentNodeSchoolTarget,
+      collectionId: ids.questionCollection,
+    },
+  });
+  assert.equal(csvQuestionPreview.job?.errorCount, 0, 'CSV question preview should have no errors');
+  assert.equal(csvQuestionPreview.job?.validCount, 1, 'CSV question preview should normalize one row');
+  assert.equal(csvQuestionPreview.items?.[0]?.normalized?.correctOptionIndices?.[0], 1, 'CSV answer B should map to option index 1');
+
+  const csvQuestionImport = await request('/api/tenant-content/imports/questions', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: { previewJobId: csvQuestionPreview.job.id },
+  });
+  assert.equal(csvQuestionImport.item?.status, 'completed', 'CSV question import should complete');
+
+  const csvQuestionJobs = await request('/api/tenant-content/imports', {
+    userId: TENANT_ADMIN_USER_ID,
+    query: { importType: 'questions', limit: 20 },
+  });
+  assert.ok(
+    csvQuestionJobs.items?.some(item => item.id === csvQuestionPreview.job.id && item.sourceFormat === 'csv'),
+    'CSV question import job should retain sourceFormat',
+  );
+
+  const importedCsvQuestions = await request('/api/catalog/questions', {
+    query: { collectionId: ids.questionCollection, limit: 150 },
+  });
+  assert.ok(
+    importedCsvQuestions.items?.some(item => item.content === 'CSV导入题：多租户数据隔离应主要依赖什么？'),
+    'catalog should expose imported CSV question',
+  );
+
+  const asyncQuestionPreview = await request('/api/tenant-content/imports/preview/questions', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: {
+      sourceName: 'async-question-import.json',
+      subjectId: ids.subject,
+      categoryId: ids.category,
+      regionId: ids.region,
+      entryId: ids.contentEntry,
+      contentNodeId: ids.contentNodeSchoolTarget,
+      collectionId: ids.questionCollection,
+      items: [
+        {
+          legacyId: 'integration-import-async-choice-001',
+          type: 'choice',
+          content: '异步导入排队题：大批量导入应该交给谁执行？',
+          options: ['前端循环写表', '导入 worker', '用户刷新页面', '浏览器缓存'],
+          correctOptionIndices: [1],
+          explanation: '大批量导入由后端 worker 消费，避免请求超时和规则漂移。',
+          difficulty: 2,
+          tags: ['async-import'],
+        },
+      ],
+    },
+  });
+  assert.equal(asyncQuestionPreview.job?.errorCount, 0, 'async preview should have no errors');
+  const asyncQuestionQueued = await request('/api/tenant-content/imports/questions', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: { previewJobId: asyncQuestionPreview.job.id, executionMode: 'async' },
+  });
+  assert.equal(asyncQuestionQueued.item?.status, 'pending', 'async import should queue the job');
+  assert.equal(asyncQuestionQueued.item?.executionMode, 'async', 'async import response should expose execution mode');
+
+  const queuedAgain = await request('/api/tenant-content/imports/questions', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: { previewJobId: asyncQuestionPreview.job.id, executionMode: 'async' },
+  });
+  assert.equal(queuedAgain.item?.idempotent, true, 'queueing the same async job should be idempotent');
+
+  const queuedSyncExecution = await request('/api/tenant-content/imports/questions', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: { previewJobId: asyncQuestionPreview.job.id },
+    expectStatus: 409,
+  });
+  assert.equal(queuedSyncExecution.code, 'IMPORT_JOB_QUEUED', 'queued import job should not be executed synchronously');
+
  const vocabEntry = await request('/api/tenant-content/content-entries', {
    userId: TENANT_ADMIN_USER_ID,
    method: 'PUT',
@@ -2913,6 +3010,42 @@ async function testTenantContentAssetsAndImports() {
  });
  assert.ok(vocabularyWords.items?.some(item => item.word === 'abandon' && item.contentNodeId), 'catalog should expose imported vocabulary word with node binding');

+  const vocabularyCsv = [
+    ['unitLegacyId', 'unitName', 'wordLegacyId', 'word', 'phonetic', 'meaning', 'example', 'difficulty', 'tags'].join(','),
+    ['integration-vocab-csv-unit-001', 'CSV 高频词单元', 'integration-vocab-csv-word-scale', 'scale', '/skeɪl/', 'n. 规模；等级', 'SaaS platforms must scale safely.', '2', 'csv|高频'].join(','),
+  ].join('\n');
+  const vocabularyCsvPreview = await request('/api/tenant-content/imports/preview/vocabulary', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: {
+      sourceFormat: 'csv',
+      sourceName: 'vocabulary.csv',
+      csvText: vocabularyCsv,
+      regionId: ids.region,
+      entryId: vocabEntry.item.id,
+      contentNodeId: vocabRoot.item.id,
+    },
+  });
+  assert.equal(vocabularyCsvPreview.job?.errorCount, 0, 'CSV vocabulary preview should have no errors');
+  assert.equal(vocabularyCsvPreview.items?.[0]?.normalized?.words?.[0]?.word, 'scale', 'CSV vocabulary should group words under units');
+
+  const vocabularyCsvImport = await request('/api/tenant-content/imports/vocabulary', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: { previewJobId: vocabularyCsvPreview.job.id },
+  });
+  assert.equal(vocabularyCsvImport.item?.status, 'completed', 'CSV vocabulary import should complete');
+
+  const vocabularyUnitsAfterCsv = await request('/api/catalog/vocabulary-units', {
+    query: { regionId: ids.region },
+  });
+  const csvVocabularyUnit = vocabularyUnitsAfterCsv.items?.find(item => item.legacyId === 'integration-vocab-csv-unit-001');
+  assert.ok(csvVocabularyUnit, 'catalog should expose CSV imported vocabulary unit');
+  const csvVocabularyWords = await request('/api/catalog/vocabulary-words', {
+    query: { unitId: csvVocabularyUnit.id },
+  });
+  assert.ok(csvVocabularyWords.items?.some(item => item.word === 'scale'), 'catalog should expose CSV imported vocabulary word');
+
  const handbookEntry = await request('/api/tenant-content/content-entries', {
    userId: TENANT_ADMIN_USER_ID,
    method: 'PUT',
@@ -3142,6 +3275,52 @@ async function testTenantContentAssetsAndImports() {
    'mixed scoreline import should create record after school and major',
  );

+  const scorelineWorkbook = new ExcelJS.Workbook();
+  scorelineWorkbook.addWorksheet('fields').addRows([
+    ['legacyId', 'fieldKey', 'fieldName', 'fieldType', 'isTrend'],
+    ['integration-scoreline-xlsx-field-min', 'xlsxMinScore', 'Excel最低分', 'number', '是'],
+  ]);
+  scorelineWorkbook.addWorksheet('schools').addRows([
+    ['legacyId', 'schoolName', 'isHot'],
+    ['integration-scoreline-xlsx-school', 'Excel导入学院', 'true'],
+  ]);
+  scorelineWorkbook.addWorksheet('majors').addRows([
+    ['legacyId', 'schoolLegacyId', 'majorName'],
+    ['integration-scoreline-xlsx-major', 'integration-scoreline-xlsx-school', 'Excel专业'],
+  ]);
+  scorelineWorkbook.addWorksheet('records').addRows([
+    ['legacyId', 'schoolLegacyId', 'majorLegacyId', 'year', 'xlsxMinScore'],
+    ['integration-scoreline-xlsx-record-2027', 'integration-scoreline-xlsx-school', 'integration-scoreline-xlsx-major', 2027, 233],
+  ]);
+  const scorelineExcelBuffer = await scorelineWorkbook.xlsx.writeBuffer();
+  const scorelineExcelPreview = await request('/api/tenant-content/imports/preview/scoreline', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: {
+      sourceFormat: 'excel',
+      sourceName: 'scoreline.xlsx',
+      fileBase64: Buffer.from(scorelineExcelBuffer).toString('base64'),
+      regionId: ids.region,
+    },
+  });
+  assert.equal(scorelineExcelPreview.job?.errorCount, 0, 'Excel scoreline preview should have no errors');
+  assert.equal(scorelineExcelPreview.job?.validCount, 4, 'Excel scoreline preview should parse multi-sheet workbook');
+
+  const scorelineExcelImport = await request('/api/tenant-content/imports/scoreline', {
+    userId: TENANT_ADMIN_USER_ID,
+    method: 'POST',
+    body: { previewJobId: scorelineExcelPreview.job.id },
+  });
+  assert.equal(scorelineExcelImport.item?.status, 'completed', 'Excel scoreline import should complete');
+
+  const excelScorelineRecords = await request('/api/scoreline/records', {
+    query: { regionId: ids.region, year: 2027, pageSize: 50 },
+  });
+  assert.ok(
+    excelScorelineRecords.items?.some(item => item.schoolName === 'Excel导入学院' && item.fieldValues?.xlsxMinScore === 233),
+    'public scoreline records should expose imported Excel record',
+  );
+
  const invalidVideoPreview = await request('/api/tenant-content/imports/preview/videos', {
    userId: TENANT_ADMIN_USER_ID,
    method: 'POST',
--- a/scripts/import-worker-integration-test.js
+++ b/scripts/import-worker-integration-test.js
@@ -0,0 +1,299 @@
+import assert from 'node:assert/strict';
+import pg from 'pg';
+import { spawn } from 'node:child_process';
+
+const databaseUrl = process.env.DATABASE_URL || 'postgresql://postgres:postgres@127.0.0.1:54322/postgres';
+const tenantId = '00000000-0000-0000-0000-000000000001';
+const adminUserId = '00000000-0000-0000-0000-000000000102';
+const ids = {
+  region: '00000000-0000-0000-0000-000000000301',
+  subject: '00000000-0000-0000-0000-000000000501',
+  category: '00000000-0000-0000-0000-000000000601',
+  contentEntry: '00000000-0000-0000-0000-000000000611',
+  contentNodeSchoolTarget: '00000000-0000-0000-0000-000000000614',
+  questionCollection: '00000000-0000-0000-0000-000000000615',
+};
+
+function runWorkerOnce() {
+  const child = spawn(process.execPath, ['apps/worker/dist/apps/worker/src/index.js', '--once', '--job', 'imports'], {
+    cwd: process.cwd(),
+    env: {
+      ...process.env,
+      DATABASE_URL: databaseUrl,
+      WORKER_IMPORT_BATCH_SIZE: '5',
+      WORKER_IMPORT_ID: 'imports-integration-test',
+    },
+    stdio: ['ignore', 'pipe', 'pipe'],
+    windowsHide: true,
+  });
+  let output = '';
+  child.stdout.on('data', chunk => {
+    output += chunk.toString();
+  });
+  child.stderr.on('data', chunk => {
+    output += chunk.toString();
+  });
+  return new Promise((resolve, reject) => {
+    child.on('error', reject);
+    child.on('exit', code => {
+      try {
+        assert.equal(code, 0, `worker should exit 0\n${output}`);
+        assert.match(output, /imports batch processed=\d+/, 'worker output should include imports summary');
+        resolve(output);
+      } catch (error) {
+        reject(error);
+      }
+    });
+  });
+}
+
+async function cleanup(pool) {
+  await pool.query(
+    `
+    delete from public.question_collection_items
+    where tenant_id = $1
+      and question_id in (
+        select id from public.questions
+        where tenant_id = $1
+          and (
+            legacy_id like 'worker-import-question-%'
+            or legacy_id like 'integration-import-async-choice-%'
+          )
+      )
+    `,
+    [tenantId],
+  );
+  await pool.query(
+    `
+    delete from public.question_versions
+    where tenant_id = $1
+      and question_id in (
+        select id from public.questions
+        where tenant_id = $1
+          and (
+            legacy_id like 'worker-import-question-%'
+            or legacy_id like 'integration-import-async-choice-%'
+          )
+      )
+    `,
+    [tenantId],
+  );
+  await pool.query(
+    `
+    delete from public.questions
+    where tenant_id = $1
+      and (
+        legacy_id like 'worker-import-question-%'
+        or legacy_id like 'integration-import-async-choice-%'
+      )
+    `,
+    [tenantId],
+  );
+  await pool.query(
+    `
+    delete from public.audit_logs
+    where tenant_id = $1
+      and target_type = 'content_import_job'
+      and details::text like '%worker-import%'
+    `,
+    [tenantId],
+  );
+  await pool.query(
+    `
+    delete from public.content_import_jobs
+    where tenant_id = $1
+      and (
+        source_name like 'worker-import-%'
+        or source_name = 'async-question-import.json'
+      )
+    `,
+    [tenantId],
+  );
+}
+
+async function createQueuedQuestionImport(pool) {
+  const preview = await pool.query(
+    `
+    insert into public.content_import_jobs (
+      tenant_id, created_by, import_type, source_format, status,
+      source_name, source_hash, target_region_id, target_subject_id,
+      target_category_id, target_content_node_id, target_collection_id,
+      dry_run, total_count, valid_count, error_count, warning_count,
+      summary, raw_payload, normalized_payload, execution_mode, queued_at,
+      next_attempt_at, parser_metadata
+    )
+    values (
+      $1, $2, 'questions', 'json', 'pending',
+      'worker-import-questions.json', 'worker-import-source-hash',
+      $3::uuid, $4::uuid, $5::uuid, $6::uuid, $7::uuid,
+      false, 1, 1, 0, 0,
+      $8::jsonb, $9::jsonb, $10::jsonb, 'async', now(), now(), '{}'::jsonb
+    )
+    returning id
+    `,
+    [
+      tenantId,
+      adminUserId,
+      ids.region,
+      ids.subject,
+      ids.category,
+      ids.contentNodeSchoolTarget,
+      ids.questionCollection,
+      JSON.stringify({
+        target: {
+          regionId: ids.region,
+          subjectId: ids.subject,
+          categoryId: ids.category,
+          contentNodeId: ids.contentNodeSchoolTarget,
+          collectionId: ids.questionCollection,
+        },
+        importOptions: { allowPartial: false },
+        source: 'worker-import-integration',
+      }),
+      JSON.stringify([
+        {
+          legacyId: 'worker-import-question-001',
+          type: 'choice',
+          content: '异步导入题：worker 应该复用哪套导入规则？',
+          options: ['自己重写', '复用后端导入 executor', '前端直写数据库', '跳过校验'],
+          correctOptionIndices: [1],
+          explanation: 'worker 和 API 必须复用同一套后端导入规则。',
+          difficulty: 2,
+          tags: ['worker-import'],
+        },
+      ]),
+      JSON.stringify([
+        {
+          legacyId: 'worker-import-question-001',
+          type: 'choice',
+          typeLabel: null,
+          content: '异步导入题：worker 应该复用哪套导入规则？',
+          options: ['自己重写', '复用后端导入 executor', '前端直写数据库', '跳过校验'],
+          correctOptionIndex: 1,
+          correctOptionIndices: [1],
+          answerText: null,
+          explanation: 'worker 和 API 必须复用同一套后端导入规则。',
+          difficulty: 2,
+          tags: ['worker-import'],
+          mediaUrl: null,
+          subQuestions: [],
+          codeLang: null,
+          codeTemplate: null,
+          examMarkers: {},
+          sourceHash: 'worker-import-question-hash-001',
+        },
+      ]),
+    ],
+  );
+  const jobId = preview.rows[0].id;
+  await pool.query(
+    `
+    insert into public.content_import_items (
+      tenant_id, job_id, row_no, external_id, status, target_type,
+      source_payload, normalized_payload, content_hash, issues_count
+    )
+    values ($1, $2, 1, 'worker-import-question-001', 'valid', 'question', $3::jsonb, $4::jsonb, 'worker-import-question-hash-001', 0)
+    `,
+    [
+      tenantId,
+      jobId,
+      JSON.stringify({
+        legacyId: 'worker-import-question-001',
+        content: '异步导入题：worker 应该复用哪套导入规则？',
+      }),
+      JSON.stringify({
+        legacyId: 'worker-import-question-001',
+        type: 'choice',
+        typeLabel: null,
+        content: '异步导入题：worker 应该复用哪套导入规则？',
+        options: ['自己重写', '复用后端导入 executor', '前端直写数据库', '跳过校验'],
+        correctOptionIndex: 1,
+        correctOptionIndices: [1],
+        answerText: null,
+        explanation: 'worker 和 API 必须复用同一套后端导入规则。',
+        difficulty: 2,
+        tags: ['worker-import'],
+        mediaUrl: null,
+        subQuestions: [],
+        codeLang: null,
+        codeTemplate: null,
+        examMarkers: {},
+        sourceHash: 'worker-import-question-hash-001',
+      }),
+    ],
+  );
+  return jobId;
+}
+
+async function main() {
+  const pool = new pg.Pool({ connectionString: databaseUrl });
+  try {
+    await cleanup(pool);
+    const jobId = await createQueuedQuestionImport(pool);
+
+    const output = await runWorkerOnce();
+    assert.match(output, /completed=1/, 'worker should complete exactly the queued import job after cleanup');
+
+    const job = await pool.query(
+      `
+      select status, execution_mode, inserted_count, updated_count, skipped_count,
+             locked_at, locked_by, attempt_count, error_message
+      from public.content_import_jobs
+      where tenant_id = $1 and id = $2
+      `,
+      [tenantId, jobId],
+    );
+    assert.equal(job.rows[0]?.status, 'completed', 'queued import job should be completed');
+    assert.equal(job.rows[0]?.execution_mode, 'async', 'job should keep async execution mode');
+    assert.equal(Number(job.rows[0]?.inserted_count), 1, 'worker should insert one question');
+    assert.equal(job.rows[0]?.locked_at, null, 'completed job should release lock');
+    assert.equal(job.rows[0]?.locked_by, null, 'completed job should clear lock owner');
+    assert.equal(Number(job.rows[0]?.attempt_count), 1, 'worker should record one attempt');
+    assert.equal(job.rows[0]?.error_message, null, 'completed job should not retain error message');
+
+    const question = await pool.query(
+      `
+      select q.id, v.content
+      from public.questions q
+      join public.question_versions v on v.id = q.current_version_id
+      where q.tenant_id = $1 and q.legacy_id = 'worker-import-question-001'
+      limit 1
+      `,
+      [tenantId],
+    );
+    assert.equal(question.rows[0]?.content, '异步导入题：worker 应该复用哪套导入规则？', 'worker should import question content');
+
+    const collectionItem = await pool.query(
+      `
+      select 1
+      from public.question_collection_items
+      where tenant_id = $1 and collection_id = $2 and question_id = $3
+      limit 1
+      `,
+      [tenantId, ids.questionCollection, question.rows[0]?.id],
+    );
+    assert.equal(collectionItem.rowCount, 1, 'worker should bind imported question to collection');
+
+    const audit = await pool.query(
+      `
+      select action
+      from public.audit_logs
+      where tenant_id = $1 and target_type = 'content_import_job' and target_id = $2
+      order by created_at desc
+      limit 1
+      `,
+      [tenantId, jobId],
+    );
+    assert.equal(audit.rows[0]?.action, 'content.import.questions.completed', 'worker import should write completion audit');
+
+    console.log('Import worker integration test complete.');
+  } finally {
+    await cleanup(pool).catch(() => {});
+    await pool.end();
+  }
+}
+
+main().catch(error => {
+  console.error(error);
+  process.exit(1);
+});
--- a/supabase/migrations/202606290014_spreadsheet_import_async_metadata.sql
+++ b/supabase/migrations/202606290014_spreadsheet_import_async_metadata.sql
@@ -0,0 +1,28 @@
+alter table public.content_import_jobs
+  add column if not exists execution_mode text not null default 'sync',
+  add column if not exists queued_at timestamptz,
+  add column if not exists locked_at timestamptz,
+  add column if not exists locked_by text,
+  add column if not exists attempt_count integer not null default 0,
+  add column if not exists max_attempts integer not null default 3,
+  add column if not exists next_attempt_at timestamptz,
+  add column if not exists parser_metadata jsonb not null default '{}'::jsonb;
+
+do $$
+begin
+  if not exists (select 1 from pg_constraint where conname = 'content_import_jobs_execution_mode_check') then
+    alter table public.content_import_jobs
+      add constraint content_import_jobs_execution_mode_check
+      check (execution_mode in ('sync', 'async'));
+  end if;
+
+  if not exists (select 1 from pg_constraint where conname = 'content_import_jobs_attempts_check') then
+    alter table public.content_import_jobs
+      add constraint content_import_jobs_attempts_check
+      check (attempt_count >= 0 and max_attempts > 0 and attempt_count <= max_attempts);
+  end if;
+end $$;
+
+create index if not exists idx_content_import_jobs_async_queue
+  on public.content_import_jobs(tenant_id, status, next_attempt_at, created_at)
+  where execution_mode = 'async' and status = 'pending';