feat: TS 构建管线、Spine 抓取器与 wallpapers/ 唯一真相来源

把项目从「手写 dist/」改成「wallpapers/ 是唯一真相来源，dist/ 由 pnpm build 生成」，
并补上配套的类型、门禁与抓取器。一次提交落地整条管线，因为拆开会留下不能构建的中间态。

- src/：运行时与模拟器源码（TS，strict），编译到 build/ 再拷进各分发
- tools/：build / dev / check-{syntax,paths,dist}，以及抓取器与回归门禁 tools/checks/
  （.scratch/ 下那批一次性脚本移入 tools/checks/ 并入库为长期门禁）
- wallpapers/：七档壁纸的源数据 + README.md（id/音频/预设的完整规范）
- docs/adr/0005-0008：构建管线与分发拓扑、模拟器契约、自包含 sim、每骨架资源布局
- .gitignore：排除 .scratch/ 的参考资料副本（上游 spine 整仓克隆 ~1.2 GB、
  抓取侦查数据 ~680 MB）与调试转储；这些是本地调查材料，补偿会让仓库无法克隆
- 归一化 .gitignore/CONTEXT.md 行尾（工作区 CRLF、索引 LF 造成的整文件假 diff）

同时修掉三档卡住构建的未完工壁纸：
- kv45 的 meta.json 里 id 还是抓取期场景名 scene_main，经 downloader promote 正名为 kv45
- shajin / zhigengniao_juheye 的 meta.json 误用了骨架描述文件（name/spine/animations/pages）、
  且都缺 preset.template.json；现按规范重建：骨架沉到 spines/<名>/（spine-ts 按 atlas 所在
  目录解析贴图页）、补上元数据与单骨架预设，并清掉 zhigengniao 骨架里指向作者机的绝对路径
- 顺带 promote 已在 sources.yml 里的 kv46（月升之前，与兽共舞）

pnpm check 五道门全绿：10 个分发 / 7 档壁纸 / 141 处引用自包含。

wallpapers/ys/nico-tea/spines/main_beizi_d/main_beizi_d.atlas

@@ -0,0 +1,21 @@
+main_beizi_d.png
+size:458,154
+filter:Linear,Linear
+t
+bounds:359,0,48,45
+offsets:10,10,68,65
+水_a
+bounds:414,51,103,44
+offsets:10,10,123,64
+rotate:90
+水_c
+bounds:359,51,103,49
+offsets:10,10,123,69
+rotate:90
+茶杯_a
+bounds:0,13,182,141
+offsets:10,10,202,161
+茶杯_b
+bounds:188,11,143,165
+offsets:10,10,163,185
+rotate:90

wallpapers/ys/nico-tea/spines/main_beizi_d/main_beizi_d.json

@@ -0,0 +1 @@
+{"skeleton":{"hash":"3YwrhRLGPTQ","spine":"4.2.43","x":-101,"y":-93.5,"width":202,"height":186.25,"images":""},"bones":[{"name":"root"},{"name":"水_a","parent":"root","x":-17.75,"y":39.2},{"name":"t","parent":"水_a","length":20.42,"rotation":98.84,"x":-3.59,"y":9.78}],"slots":[{"name":"茶杯_b","bone":"root","attachment":"茶杯_b"},{"name":"水_c","bone":"水_a","attachment":"水_c"},{"name":"t","bone":"t","attachment":"t"},{"name":"水_a","bone":"水_a","attachment":"水_a"},{"name":"茶杯_a","bone":"root","attachment":"茶杯_a"}],"skins":[{"name":"default","attachments":{"t":{"t":{"x":11.7,"y":1.89,"rotation":-98.84,"width":68,"height":65}},"水_a":{"水_a":{"x":1.25,"y":-3.7,"width":123,"height":64}},"水_c":{"水_c":{"x":1.25,"y":-1.2,"width":123,"height":69}},"茶杯_a":{"茶杯_a":{"y":-2,"width":202,"height":161}},"茶杯_b":{"茶杯_b":{"x":-19.5,"y":-1,"width":163,"height":185}}}}],"animations":{"animation":{"bones":{"水_a":{"translate":[{"time":2.9333,"x":-0.15,"y":0.15}]}}}},"extra":{"t":{"rootBoneName":"t","animation":{"default":{"name":"","mode":0},"animation":{"name":"default","mode":3,"moveXFreq":5,"moveXAmp":3,"moveXOctaves":0,"moveXDelay":0,"moveXCenter":0,"moveYFreq":3,"moveYAmp":3,"moveYOctaves":0,"moveYDelay":0,"moveYCenter":-2,"rotateFreq":3,"rotateAmp":5,"rotateOctaves":1.5,"rotateDelay":0}}},"水_a":{"rootBoneName":"水_a","animation":{"default":{"name":"","mode":0},"animation":{"name":"default","mode":3,"moveYFreq":3,"moveYAmp":2,"moveYOctaves":0,"moveYDelay":1.8,"moveYCenter":0}}}},"extraSlot":{},"extraConfig":{"timeScale":1}}

wallpapers/ys/nico-tea/spines/main_beizi_d/meta.json

@@ -0,0 +1,16 @@
+{
+  "name": "main_beizi_d",
+  "spine": "4.2.43",
+  "animations": [
+    "animation"
+  ],
+  "skins": [
+    "default"
+  ],
+  "pages": [
+    "main_beizi_d.png"
+  ],
+  "source": "https://act.mihoyo.com/ys/event/e20260520invite-19ccy4/index.html?game_biz=hk4e_cn&mhy_presentation_style=fullscreen&mhy_auth_required=true&mhy_landscape=true&mhy_hide_status_bar=true",
+  "originalImages": null,
+  "fetchedAt": "2026-09-21T11:49:29+00:00"
+}