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/verification.json

@@ -0,0 +1,35 @@
+{
+  "version": 1,
+  "defaultProfile": "default",
+  "profiles": {
+    "default": {
+      "commands": {},
+      "services": []
+    },
+    "productSmoke": {
+      "commands": {
+        "smoke": "powershell -ExecutionPolicy Bypass -File scripts/qa/product-smoke.ps1"
+      },
+      "services": []
+    }
+  },
+  "services": [],
+  "exclude": [
+    "node_modules",
+    "dist",
+    "tmp",
+    "vendor"
+  ],
+  "policy": {
+    "mode": "standard",
+    "optionalToolsWarnOnly": true,
+    "artifactGate": "warn",
+    "artifactGateLevels": [
+      "M",
+      "L",
+      "CRITICAL"
+    ],
+    "engineeringStandardsGate": "block",
+    "productSmokeGate": "warn"
+  }
+}