feat: publish Dever core with project scaffolding and versioned AI skills

.trellis/tasks/archive/2026-09/09-13-http2-ceiling-soak/check.jsonl

@@ -0,0 +1,3 @@
+{"file":".trellis/spec/backend/error-handling.md","reason":"检查错误、OOM、计数和进程退出都显式传播"}
+{"file":".trellis/spec/backend/quality-guidelines.md","reason":"核对 CPU 隔离、测量矩阵、最小测试和结果边界"}
+{"file":".trellis/tasks/09-13-http2-ceiling-soak/research/client-bottleneck.md","reason":"检查实现没有引入重复负载器或错误分位数聚合"}