diff --git a/web-server/test/seed.mjs b/web-server/test/seed.mjs
new file mode 100644
index 0000000..eed56bf
--- /dev/null
+++ b/web-server/test/seed.mjs
@@ -0,0 +1,183 @@
+/**
+ * 演示数据播种脚本 —— 供管理端界面、Windows 客户端联调与集成测试使用。
+ *
+ * 与 smoke.mjs 不同：本脚本**保留**数据并把三类资产都置为 published，
+ * 使 GET /api/catalog/export 能返回可用于客户端联调的完整目录。
+ *
+ * 用法：
+ *   API_BASE=http://127.0.0.1:3000 node test/seed.mjs
+ *
+ * 幂等：重复执行只会追加新记录，不会破坏既有数据。
+ */
+
+import { readFileSync } from 'node:fs';
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const here = dirname(fileURLToPath(import.meta.url));
+const API = process.env.API_BASE ?? 'http://127.0.0.1:3000';
+
+const SOURCE = {
+  sourceType: 'original',
+  sourceName: 'OpenDance 官方示例库',
+  sourceUrl: 'https://example.com/opendance/samples',
+  license: 'CC-BY-4.0',
+  author: 'OpenDance Studio',
+};
+
+async function request(method, path, { json, form } = {}) {
+  const init = { method };
+  if (json !== undefined) {
+    init.headers = { 'Content-Type': 'application/json' };
+    init.body = JSON.stringify(json);
+  }
+  if (form !== undefined) init.body = form;
+  const res = await fetch(`${API}${path}`, init);
+  const text = await res.text();
+  let body = null;
+  try {
+    body = text ? JSON.parse(text) : null;
+  } catch {
+    body = text;
+  }
+  return { status: res.status, body };
+}
+
+function fileForm(fields, filename, content, mime = 'application/octet-stream') {
+  const form = new FormData();
+  for (const [key, value] of Object.entries(fields)) form.append(key, String(value));
+  form.append('file', new Blob([content], { type: mime }), filename);
+  return form;
+}
+
+function buildGlb(json) {
+  const jsonBuf = Buffer.from(JSON.stringify(json), 'utf8');
+  const padded = Buffer.concat([jsonBuf, Buffer.alloc((4 - (jsonBuf.length % 4)) % 4, 0x20)]);
+  const header = Buffer.alloc(12);
+  header.write('glTF', 0, 'ascii');
+  header.writeUInt32LE(2, 4);
+  header.writeUInt32LE(12 + 8 + padded.length, 8);
+  const chunk = Buffer.alloc(8);
+  chunk.writeUInt32LE(padded.length, 0);
+  chunk.writeUInt32LE(0x4e4f534a, 4);
+  return Buffer.concat([header, chunk, padded]);
+}
+
+async function publish(targetType, id, reviewer = 'seed') {
+  const submit = await request('POST', `/api/reviews/${targetType}/${id}/submit`, { json: { reviewer } });
+  if (submit.status === 409) return submit; // 已处于目标状态
+  const approve = await request('POST', `/api/reviews/${targetType}/${id}/approve`, {
+    json: { reviewer, comment: '演示数据自动发布' },
+  });
+  return approve;
+}
+
+async function main() {
+  console.log(`\n== 播种演示数据 @ ${API} ==\n`);
+
+  const health = await request('GET', '/health');
+  if (health.status !== 200) {
+    console.error('服务端不可达，先启动：cd web-server && npm run start:prod');
+    process.exit(1);
+  }
+  console.log(`服务端正常，数据库 ${health.body.database.server}`);
+
+  // ---------- 曲目 ----------
+  const song = await request('POST', '/api/songs', {
+    json: {
+      title: '示例曲目 · 小星星（Demo）',
+      artist: 'OpenDance 示例',
+      album: '客户端联调样例',
+      language: 'instrumental',
+      durationMs: 96000,
+      bpm: 100,
+      difficulty: 2,
+      tags: ['示例', '联调', '儿童'],
+      ...SOURCE,
+    },
+  });
+  if (song.status !== 201) {
+    console.error('创建曲目失败：', song.status, song.body);
+    process.exit(1);
+  }
+  const songId = song.body.id;
+  console.log(`  曲目 #${songId} ${song.body.title}`);
+
+  await publish('song', songId);
+
+  // ---------- 动作（BVH + 预处理） ----------
+  const bvh = readFileSync(join(here, 'fixtures', 'sample.bvh'));
+  const motion = await request('POST', '/api/motions', {
+    form: fileForm(
+      { name: '示例动作 · 挥手深蹲（Demo）', songId, fps: 30, ...SOURCE },
+      'sample.bvh',
+      bvh,
+      'text/plain',
+    ),
+  });
+  if (motion.status !== 201) {
+    console.error('上传动作失败：', motion.status, motion.body);
+    process.exit(1);
+  }
+  const motionId = motion.body.id;
+  console.log(`  动作 #${motionId} ${motion.body.name}`);
+
+  const pre = await request('POST', `/api/motions/${motionId}/preprocess`);
+  if (pre.status !== 200) {
+    console.error('预处理失败：', pre.status, pre.body);
+    process.exit(1);
+  }
+  console.log(`    预处理完成：${pre.body.keypointFrames} 帧 × 33 点，fps=${pre.body.fps}`);
+  await publish('motion', motionId);
+
+  // ---------- 模型（VRM 优先） ----------
+  const vrm = buildGlb({
+    asset: { version: '2.0', generator: 'OpenDance seed' },
+    extensions: { VRMC_vrm: { specVersion: '1.0' } },
+    meshes: [],
+    nodes: [],
+    scenes: [{ nodes: [] }],
+    scene: 0,
+  });
+  const model = await request('POST', '/api/models', {
+    form: fileForm(
+      { name: '示例模型 · VRM 1.0 占位（Demo）', isPrimary: true, ...SOURCE },
+      'demo-avatar.vrm',
+      vrm,
+      'model/gltf-binary',
+    ),
+  });
+  if (model.status !== 201) {
+    console.error('上传模型失败：', model.status, model.body);
+    process.exit(1);
+  }
+  const modelId = model.body.id;
+  console.log(`  模型 #${modelId} ${model.body.name}（vrmVersion=${model.body.vrmVersion}）`);
+  await publish('model', modelId);
+
+  // ---------- 校验目录导出 ----------
+  const bundle = await request('GET', '/api/catalog/export');
+  const summary = {
+    songs: bundle.body.songs.length,
+    motions: bundle.body.motions.length,
+    models: bundle.body.models.length,
+    defaultModelId: bundle.body.defaultModelId,
+  };
+  console.log('\n已发布目录：', JSON.stringify(summary));
+
+  const scorable = bundle.body.motions.filter((m) => m.preprocessState === 'done');
+  if (scorable.length === 0) {
+    console.error('目录中没有可评分动作，客户端集成测试将被跳过');
+    process.exit(1);
+  }
+
+  console.log('\n完成。Windows 客户端现在可联调：');
+  console.log(`  可评分动作：${scorable.map((m) => `#${m.id}(${m.keypointFrames} 帧)`).join(', ')}`);
+  console.log(`  默认模型：#${bundle.body.defaultModelId}`);
+  console.log('');
+}
+
+main().catch((err) => {
+  console.error('播种失败：', err);
+  process.exit(1);
+});