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

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

@@ -0,0 +1,3 @@
+{"file":".trellis/spec/backend/directory-structure.md","reason":"保持 Python runner、进程采样和 Rust 协议负载的职责边界"}
+{"file":".trellis/spec/backend/quality-guidelines.md","reason":"遵守性能测量公平性、资源预算、报告和最小验证要求"}
+{"file":".trellis/tasks/09-13-http2-ceiling-soak/research/client-bottleneck.md","reason":"复用已有多线程能力并避免不可合并的多进程分位数"}