Adds a new skill for creating, managing, and adopting plugins across
Claude Code and GitHub Copilot CLI marketplaces. Includes three Bash
scripts (inventory, gen_manifests, validate), three reference docs
(cross-compat, claude-code, copilot-cli), a test harness with 18
passing tests, and an eval.yaml. Also adds the `marketplace` category
to CATEGORIES.md and commits the plugin marketplace architecture
research doc that informed the skill design.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add research exploration notes (principles, challenges, implementation
guidance, skills index, session log) and gap/conflict analysis against the
current repo vision and roadmap. Sharpen the roadmap housekeeping item with
the grill-me intent, central scope question, and expected output (ADR +
updated chunk scope for 2, 3, and 4).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
