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

.scale/workflow.json

@@ -0,0 +1,51 @@
+{
+  "version": "1.0",
+  "project": "eskin-model-player",
+  "workflow": {
+    "phases": [
+      {
+        "name": "explore",
+        "description": "理解需求和现有代码",
+        "required": true,
+        "artifacts": ["docs/workflow/templates/explore.md"]
+      },
+      {
+        "name": "plan",
+        "description": "制定实现方案",
+        "required": true,
+        "artifacts": ["docs/workflow/templates/plan.md"]
+      },
+      {
+        "name": "implement",
+        "description": "编码实现",
+        "required": true,
+        "gates": ["type_check", "lint"]
+      },
+      {
+        "name": "test",
+        "description": "测试验证",
+        "required": true,
+        "gates": ["test"]
+      },
+      {
+        "name": "review",
+        "description": "代码审查",
+        "required": true,
+        "artifacts": ["docs/workflow/templates/review.md"]
+      },
+      {
+        "name": "ship",
+        "description": "提交发布",
+        "required": true,
+        "gates": ["build_release", "full_test"]
+      }
+    ]
+  },
+  "skills_routing": {
+    "debug": "systematic-debugging",
+    "test": "tdd",
+    "review": "review",
+    "ship": "ship",
+    "graph": "graphify"
+  }
+}