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

.trellis/tasks/09-29-external-libs/implement.jsonl

@@ -0,0 +1,5 @@
+{"file":".trellis/spec/backend/compiler-contracts.md","reason":"Port/Adapter、role visibility、failure/effect 和 application testing 合同"}
+{"file":".trellis/spec/backend/toolchain-and-library.md","reason":"wire、settings、native build、CLI、runtime 生命周期和离线工具链合同"}
+{"file":".trellis/tasks/09-20-port-adapter/design.md","reason":"复用现有闭合 Port dispatch、typed setting 与 test fake 设计"}
+{"file":".trellis/tasks/09-28-shared-toolchain/design.md","reason":"复用机器级全局命令、版本和安全共享缓存边界"}
+{"file":".trellis/tasks/09-06-private-compiler-distribution/prd.md","reason":"约束最终 runtime/target pack 与公开发行依赖"}