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_d_dianxin/main_d_dianxin.atlas

@@ -0,0 +1,10 @@
+main_d_dianxin.png
+size:426,763
+filter:Linear,Linear
+main_d_dianxin
+bounds:0,63,426,700
+offsets:10,10,446,720
+main_st_b
+bounds:0,0,57,79
+offsets:10,10,77,99
+rotate:90

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

@@ -0,0 +1 @@
+{"skeleton":{"hash":"WCBInEMOx4o","spine":"4.2.43","x":-228,"y":-360,"width":456,"height":720,"images":""},"bones":[{"name":"root"},{"name":"main_d_dianxin","parent":"root","length":204.61,"rotation":83.63,"x":22.9,"y":-52.55},{"name":"main_st_b","parent":"root","x":189.16,"y":-28.54}],"slots":[{"name":"main_d_dianxin","bone":"main_d_dianxin","attachment":"main_d_dianxin"},{"name":"main_st_b","bone":"main_st_b","attachment":"main_st_b"}],"skins":[{"name":"default","attachments":{"main_d_dianxin":{"main_d_dianxin":{"x":49.13,"y":33.56,"rotation":-83.63,"width":446,"height":720}},"main_st_b":{"main_st_b":{"x":0.34,"y":0.04,"width":77,"height":99}}}}],"animations":{"animation":{}},"extra":{"main_d_dianxin":{"rootBoneName":"main_d_dianxin","animation":{"default":{"name":"","mode":0},"animation":{"name":"default","mode":3,"moveXFreq":5,"moveXAmp":5,"moveXOctaves":0,"moveXDelay":0,"moveXCenter":0,"moveYFreq":6,"moveYAmp":15,"moveYOctaves":0,"moveYDelay":0,"moveYCenter":0,"scaleXFreq":10,"scaleXAmp":0.02,"scaleXOctaves":0,"scaleXDelay":0,"scaleXCenter":0,"rotateFreq":6,"rotateAmp":2,"rotateOctaves":0,"rotateDelay":5}}},"main_st_b":{"rootBoneName":"main_st_b","animation":{"default":{"name":"default","mode":0},"animation":{"name":"default","mode":3,"moveXFreq":3,"moveXAmp":10,"moveXOctaves":1,"moveXDelay":4.199067782246261,"moveXCenter":0,"moveYFreq":3,"moveYAmp":15,"moveYOctaves":0,"moveYDelay":0.6845099168630091,"moveYCenter":0,"scaleXFreq":0.6,"scaleXAmp":0.15,"scaleXOctaves":0,"scaleXDelay":5.961922176774528,"scaleXCenter":-0.15}}}},"extraSlot":{},"extraConfig":{"timeScale":1}}

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

@@ -0,0 +1,16 @@
+{
+  "name": "main_d_dianxin",
+  "spine": "4.2.43",
+  "animations": [
+    "animation"
+  ],
+  "skins": [
+    "default"
+  ],
+  "pages": [
+    "main_d_dianxin.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"
+}