feat: 初始化 SCALE OS 工程框架

- 添加 SCALE Engine 配置 (.scale/)
- 添加 OpenClaw Agent 配置 (.openclaw/)
- 添加知识文档 (AGENTS.md, TOOLS.md)
- 添加质量契约和工作流配置
- 添加 22 个工作流模板
- 添加验证脚本和门控脚本
- 添加 skills-registry 技能注册表

docs/workflow/templates/resource-cleanup.md

@@ -0,0 +1,14 @@
+# Resource Cleanup
+
+## New Resources
+
+| Resource | Location | Keep / Move / Delete | Reason |
+| --- | --- | --- | --- |
+| TBD | TBD | TBD | TBD |
+
+## Docs Promotion
+
+- Promote to docs:
+- Keep in planning:
+- Keep local/runtime only:
+- Delete before handoff: