feat(skill): app-install-manager v1.2.0——回写走 PATCH 端点 + 强制先校验后回写 (#3)

配合主仓库 issue #1269 事实注册表(PR-A #1287 端点已落地):

- 新增「回写安装记录的统一方式」:首选 PATCH /api/installed-entries/:entryId/:deviceId
  (结构化+原子写+自动广播刷新),404/连接失败降级 file-write(旧客户端兼容)
- docker-app / mcp 各回写步骤改引用统一方式,只标注目标 status
- 强制「先校验后回写」:docker 健康校验通过、mcp 连接校验通过才回写 installed
  (不再仅凭 compose 无报错 / postInstall 退出码 0 就算成功)
- 边界与协作节更新;SKILL 1.1.0→1.2.0、agent.json 1.8.0→1.9.0

agent.json

@@ -2,7 +2,7 @@
   "name": "DesireCore",
   "$schema": "http://desirecore/schemas/agent.json",
   "id": "7da73b7f-bb08-4e7b-a3cf-5d4af6e22c7f",
-  "version": "1.8.0",
+  "version": "1.9.0",
   "description": "系统中枢调度器，负责任务分发、Agent 编排与全局状态监控",
   "author": "DesireCore Team",
   "repository": {