Add public validation workflow #1

	name: Validate

	on:
	pull_request:
	push:
	branches:
	- main

	permissions:
	contents: read

	jobs:
	validate:
	name: Validate marketing ops toolkit
	runs-on: ubuntu-latest

	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.12"

	- name: Run repository guardrails
	run: python scripts/validate_repo.py

	- name: Compile Python modules
	run: python -m py_compile $(git ls-files "*.py")

	- name: Validate example JSON configs
	run: \|
	python -m json.tool config/gmail_rules.example.json >/dev/null
	python -m json.tool config/ads_accounts.example.json >/dev/null

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