[wraith-proxy]

For wraith-skills ADR 0007 (serve the plugin from plugin/ so the Claude directory scans only plugin content).

• layout.plugin_root(repo): reads plugins[0].source from .claude-plugin/marketplace.json; ./ or no file means the repo root, ./plugin means repo/plugin; anything not starting ./ or containing .. is rejected.
• lint_skills, build_copilot: skills, agents, notices, tree limits and generated Copilot agents under the plugin root; em dash rule covers both the plugin root and repo-level evals/, README, AGENTS.md.
• sync_commit_type: with a subfolder plugin, only paths under it ship.
• plugin checks: manifests read from the plugin root; marketplace source must resolve to it; a subfolder plugin may hold only the listed plugin content, its LICENSE must equal the root one, and its README must have at least 40 words.

Root layout unchanged: against wraith-skills main, wraith-lint-skills 0 problems, wraith-build-copilot --check up to date, wraith-check-plugin 71 passed. uv run pytest -q tests: 200 passed.