SKILL.md format specification with native Agent UI dashboard support

[kovtcharov]

Summary

Define the SKILL.md format — the standard skill definition for GAIA's agent ecosystem. YAML frontmatter declaring: name, version, permissions, model requirements, dependencies, tools, security tier. Must be manageable from the Agent UI configuration dashboard, not just CLI/files.

Prerequisite for

• Agent Manifest: declarative metadata system for agent capabilities and requirements #462 (Agent Manifest)
• Skill marketplace: format spec, security tiers, and AMD Verified seeding #647 (Skill Marketplace)
• OEM bundling framework: pre-configuration for hardware SKUs #648 (OEM Bundling)

Key Design Points

• Permission model: domain-scoped syntax (filesystem:read, network:write, etc.)
• Security tiers: AMD Verified (code-signed), Community Reviewed, Experimental
• Configuration dashboard integration: install/remove/configure skills visually
• OpenClaw SKILL.md compatibility where feasible

Acceptance Criteria

• SKILL.md spec documented in docs/spec/
• Permission model defined with granular domain:level syntax
• Security tiers defined with promotion path
• Agent UI configuration dashboard has skills management panel
• CLI: gaia skill list, gaia skill install, gaia skill remove
• Example skills written for 3 existing agents

Related

• docs/plans/skill-format.md (detailed specification)