feat: add adr-author skill #21

	name: Validate Skills

	on:
	pull_request:
	branches: [devel, main]
	paths:
	- 'skills/**/SKILL.md'
	- 'SKILLS.md'

	permissions:
	contents: read

	jobs:
	validate:
	name: Structural validation (gatekeeper)
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	# Full history needed to diff against the base branch
	fetch-depth: 0

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.x'

	- name: Install dependencies
	run: python -m pip install pyyaml

	- name: Run skill validation
	run: python scripts/validate_skills.py
	env:
	BASE_REF: ${{ github.base_ref }}

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