chore: 基线 — 已发布壁纸现状原样入库（未做任何改动）

dist/ 为 Wallpaper Engine 网页壁纸「【崩坏：星穹铁道】昔涟」(workshopid 3604974793, version 2)，
含两套预设 xilian / kv37，总计 105.1MB。本次提交不做任何修改，仅作为后续优化的对拍基线。

AGENTS.md

@@ -0,0 +1,13 @@
+## Agent skills
+
+### Issue tracker
+
+Issues and specs live as markdown files under `.scratch/` in this repo. See `docs/agents/issue-tracker.md`.
+
+### Triage labels
+
+The five canonical triage roles use their default label strings. See `docs/agents/triage-labels.md`.
+
+### Domain docs
+
+Single-context: one `CONTEXT.md` and `docs/adr/` at the repo root. See `docs/agents/domain.md`.