app #2 piano-sheet: 钢琴谱管理 / 阅读，piano.famzheng.me

后端 axum + sqlite，图片直接 BLOB 存进 pages 表（单张 ≤ 10MB / 单
谱 ≤ 64 页），5 个 endpoint：multipart upload、列表、详情、单页图片
（带 immutable cache header）+ healthz。

前端 vue3 + pinia + vue-router，3 个视图：列表（卡片网格 + 首页缩
略）、上传（拖拽 + 顺序预览）、阅读（全屏，左右点按 / 键盘 / 拖
拽进度条翻页，2.5s 自动隐藏 chrome）。视图状态走 URL（reader 的
当前页是 ?page=N）。

部署：cube-piano-sheet ns + 10Gi PVC + traefik ingress + 一条
buffering middleware 把 body 上限抬到 700MB。镜像 < 20MB（scratch
+ musl 静态）。

Cargo.lock

@@ -59,6 +59,7 @@ dependencies = [
  "matchit",
  "memchr",
  "mime",
+ "multer",
  "percent-encoding",
  "pin-project-lite",
  "rustversion",
@@ -142,6 +143,15 @@ dependencies = [
  "tracing-subscriber",
 ]
 
+[[package]]
+name = "encoding_rs"
+version = "0.8.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75030f3c4f45dafd7586dd6780965a8c7e8e285a5ecb86713e63a79c5b2766f3"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "errno"
 version = "0.3.14"
@@ -414,6 +424,23 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "multer"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83e87776546dc87511aa5ee218730c92b666d7264ab6ed41f9d215af9cd5224b"
+dependencies = [
+ "bytes",
+ "encoding_rs",
+ "futures-util",
+ "http",
+ "httparse",
+ "memchr",
+ "mime",
+ "spin",
+ "version_check",
+]
+
 [[package]]
 name = "nu-ansi-term"
 version = "0.50.3"
@@ -458,6 +485,20 @@ version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
+[[package]]
+name = "piano-sheet"
+version = "0.1.0"
+dependencies = [
+ "axum",
+ "cube-core",
+ "rusqlite",
+ "serde",
+ "serde_json",
+ "tokio",
+ "tower-http",
+ "tracing",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.17"
@@ -672,6 +713,12 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
 [[package]]
 name = "syn"
 version = "2.0.117"