插件技能重复注册：递归扫描安装目录导致多平台插件（如 gbrain）技能翻倍
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Description
环境
ZCode 桌面版（Windows 11），插件：gbrain（marketplace: github.com/garrytan/gbrain，版本 0.47.9.0）
问题
安装 gbrain 插件后，技能列表里每个 gbrain 技能都出现两次（约 60 个技能翻倍）。
根因（已在本机定位）
gbrain 这类多平台插件仓库里有两套技能树：
- 顶层
skills/—— 供插件清单openclaw.plugin.json引用（清单里 63 个条目全部指向skills/...，从未引用plugin/skills） plugin/—— 由scripts/generate-plugin-tree.ts生成的另一套技能树，README 注明是给 gbrain 的 Codex / Claude Code 插件用的
ZCode 的插件技能发现逻辑没有按清单声明的路径加载，而是对整个插件安装目录做递归 SKILL.md 扫描（排除项只有 node_modules/dist/build/out/target/vendor/coverage/.cache/.next/.turbo/.venv/pycache，深度上限 8 层），于是 plugin/skills/<name>/SKILL.md（深度 3）也被注册，同一技能出现两条。
建议
二选一即可修复：
- 插件技能发现优先遵循插件清单声明的技能路径，仅作兜底扫描；
- 或在递归扫描的排除目录里加上
plugin（以及类似的多平台产物目录）。
本地临时解法
删除缓存里的 plugin/skills 后重启即恢复正常（已验证），但插件升级后该目录会随新版本回来。
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing ZCode’s recursive SKILL.md discovery logic and compare it with the declared paths in openclaw.plugin.json; scripts/generate-plugin-tree.ts explains why gbrain contains a second tree. Verify the fix with the gbrain 0.47.9.0 installation on Windows 11, confirming each skill appears once without deleting plugin/skills.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- desktop, devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 65/100