Address code review findings:
Security (Medium):
- Path traversal guard in OptionalSkillSource.fetch() — resolve() and
validate that the path stays within optional-skills/ before reading
Bug fixes (Medium):
- Add 'builtin' to trust_style dicts in do_inspect() and
_resolve_short_name() — official skills now show bright_cyan 'official'
label consistently across all display functions (5/5 dicts fixed)
Edge cases (Low):
- Clamp page_size to [1, 100] in do_browse() to prevent ZeroDivisionError
- Update SkillMeta.source docstring to include 'official'
- Add browse command to optional-skills/DESCRIPTION.md
Add 'optional-skills/' directory for official skills that ship with the repo
but are not copied to ~/.hermes/skills/ during setup. They are:
- NOT shown to the model in the system prompt
- NOT copied during hermes setup/update
- Discoverable via 'hermes skills search' labeled as 'official'
- Installable via 'hermes skills install' with builtin trust (no third-party warning)
- Auto-categorized on install based on directory structure
Implementation:
- OptionalSkillSource adapter in tools/skills_hub.py (search/fetch/inspect)
- Added to create_source_router() as first source (highest priority)
- Trust level 'builtin' for official skills in skills_guard.py
- Friendly install message for official skills (no third-party warning)
- 'official' label in cyan in search results and skill list
First optional skill: Blackbox CLI (autonomous-ai-agents/blackbox)
- Multi-model coding agent with built-in judge/Chairman pattern
- Delegates to Claude, Codex, Gemini, and Blackbox models
- Open-source CLI (GPL-3.0, TypeScript, forked from Gemini CLI)
- Requires paid Blackbox AI API key
Refs: #475
