feat: 新增音乐播放模块

- 新增 Music 数据模型 + 迁移（title/subtitle/audioFile）
- 后端：公共 /api/music 查询接口 + 管理端 CRUD
  （音频上传专用 multer，限制 20MB）
- 移动端 /music/:id 播放页：
  - 金色印章式唱片 + 旋转虚线环 + 三重金色涟漪
  - preload=auto + HTTP Range 流式加载
  - 浏览器禁止 autoplay 时显示「轻点聆听」overlay
  - 自定义进度条与时间显示
- Admin：新增音乐管理三页（列表/表单/二维码）与侧栏入口
- 导入示例音乐：朝天宫之歌
- Dockerfile + entrypoint 增加 music 资产回灌

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/server/src/routes/admin.ts

@@ -18,6 +18,7 @@ const storage = multer.diskStorage({
   },
 });
 const upload = multer({ storage, limits: { fileSize: 5 * 1024 * 1024 } });
+const audioUpload = multer({ storage, limits: { fileSize: 20 * 1024 * 1024 } });
 
 const router = Router();
 router.use(requireAdmin);
@@ -282,4 +283,88 @@ router.get("/articles/:id/qrcode", async (req, res) => {
   res.json({ success: true, data: { qrDataUrl, articleUrl, articleTitle: article.title } });
 });
 
+// ===== Music CRUD =====
+
+router.get("/music", async (_req, res) => {
+  const music = await prisma.music.findMany({ orderBy: { sortOrder: "asc" } });
+  res.json({ success: true, data: music });
+});
+
+const musicSchema = z.object({
+  title: z.string().min(1, "标题不能为空"),
+  subtitle: z.string().optional(),
+  audioFile: z.string().optional(),
+  sortOrder: z.number().int().optional(),
+  enabled: z.boolean().optional(),
+});
+
+router.post("/music", async (req, res) => {
+  const parsed = musicSchema.safeParse(req.body);
+  if (!parsed.success) {
+    res.status(400).json({ success: false, error: { code: "VALIDATION", message: parsed.error.issues[0].message } });
+    return;
+  }
+  const music = await prisma.music.create({
+    data: {
+      title: parsed.data.title,
+      subtitle: parsed.data.subtitle,
+      audioFile: parsed.data.audioFile ?? "",
+      sortOrder: parsed.data.sortOrder ?? 0,
+      enabled: parsed.data.enabled ?? true,
+    },
+  });
+  res.json({ success: true, data: music });
+});
+
+router.put("/music/:id", async (req, res) => {
+  const parsed = musicSchema.partial().safeParse(req.body);
+  if (!parsed.success) {
+    res.status(400).json({ success: false, error: { code: "VALIDATION", message: parsed.error.issues[0].message } });
+    return;
+  }
+  const music = await prisma.music.update({
+    where: { id: req.params.id },
+    data: parsed.data,
+  }).catch(() => null);
+  if (!music) {
+    res.status(404).json({ success: false, error: { code: "NOT_FOUND", message: "音乐不存在" } });
+    return;
+  }
+  res.json({ success: true, data: music });
+});
+
+router.delete("/music/:id", async (req, res) => {
+  await prisma.music.delete({ where: { id: req.params.id } }).catch(() => null);
+  res.json({ success: true, data: null });
+});
+
+router.post("/music/:id/upload", audioUpload.single("audio"), async (req, res) => {
+  if (!req.file) {
+    res.status(400).json({ success: false, error: { code: "NO_FILE", message: "请选择音频文件" } });
+    return;
+  }
+  const audioPath = `/uploads/${req.file.filename}`;
+  const music = await prisma.music.update({
+    where: { id: req.params.id },
+    data: { audioFile: audioPath },
+  }).catch(() => null);
+  if (!music) {
+    res.status(404).json({ success: false, error: { code: "NOT_FOUND", message: "音乐不存在" } });
+    return;
+  }
+  res.json({ success: true, data: { path: audioPath } });
+});
+
+router.get("/music/:id/qrcode", async (req, res) => {
+  const music = await prisma.music.findUnique({ where: { id: req.params.id } });
+  if (!music) {
+    res.status(404).json({ success: false, error: { code: "NOT_FOUND", message: "音乐不存在" } });
+    return;
+  }
+  const siteUrl = process.env.SITE_URL || "http://localhost:5173";
+  const musicUrl = `${siteUrl}/music/${music.id}`;
+  const qrDataUrl = await generateQRCodeDataURL(musicUrl, { width: 400 });
+  res.json({ success: true, data: { qrDataUrl, musicUrl, musicTitle: music.title } });
+});
+
 export default router;

packages/server/src/routes/music.ts

@@ -0,0 +1,35 @@
+import { Router } from "express";
+import { prisma } from "@stamp/shared";
+
+const router = Router();
+
+router.get("/", async (_req, res) => {
+  const music = await prisma.music.findMany({
+    where: { enabled: true },
+    orderBy: { sortOrder: "asc" },
+    select: { id: true, title: true, subtitle: true, audioFile: true, sortOrder: true },
+  });
+  res.json({ success: true, data: music });
+});
+
+router.get("/:id", async (req, res) => {
+  const music = await prisma.music.findUnique({
+    where: { id: req.params.id },
+    select: {
+      id: true,
+      title: true,
+      subtitle: true,
+      audioFile: true,
+      sortOrder: true,
+      enabled: true,
+    },
+  });
+  if (!music || !music.enabled) {
+    res.status(404).json({ success: false, error: { code: "NOT_FOUND", message: "音乐不存在" } });
+    return;
+  }
+  const { enabled: _, ...data } = music;
+  res.json({ success: true, data });
+});
+
+export default router;