chore(spec): 综合清理 + legacy-layer 迁移 spec/plan/data

主要改动:
- 切到 funplay-cocos-mcp v0.5.1 (用户级配置, 项目级 .mcp.json 删除)
- 仓库文档/CLAUDE.md/.gitignore 等清理过时 cocos-mcp-server 引用
- memory 文件同步: cocos-mcp-setup/path/blocker/spriteframe-uuid/prefab-persist 等加 funplay 实测警告
- memory 新建 funplay-cocos-mcp-pending-verification.md (后已被实测覆盖)
- spec/plan/data:
  - docs/superpowers/specs/2026-09-02-legacy-layer-migration-design.md
  - docs/superpowers/plans/2026-09-02-legacy-layer-migration.md
  - docs/superpowers/data/layer-spirit-summary.json
- YouleNexus: profiles.ts / defaults.ts / PlayerInfoView.prefab / scene 改动

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.gitignore

@@ -30,13 +30,6 @@ cocoscreator_projects/build-workspace/
 cocoscreator_projects/games/*/assets/framework
 cocoscreator_projects/games/*/assets/framework.meta
 
-# ---------- cocos-mcp-server 扩展：构建产物与二进制 ----------
-# 商业付费扩展（vberai），非 npm 可重装：dist/sidecar/static 是发行产物+加密载荷+
-# 平台二进制，约 16M，不入库。换机器时从购买渠道重新拷贝整个扩展目录。
-cocoscreator_projects/YouleNexus/extensions/cocos-mcp-server/dist/
-cocoscreator_projects/YouleNexus/extensions/cocos-mcp-server/sidecar/
-cocoscreator_projects/YouleNexus/extensions/cocos-mcp-server/static/
-
 # ---------- Claude Code 个人本地配置 ----------
 # .claude/skills/ 入库（团队共享），本地权限覆盖不入库
 .claude/settings.local.json