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Document builtin-first spec authoring #4

	name: CI

	on:
	push:
	branches: [main]
	pull_request:

	permissions:
	contents: read

	env:
	CARGO_TERM_COLOR: always

	jobs:
	validate:
	name: Validate
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
	- name: Install Rust
	run: \|
	rustup toolchain install stable --profile minimal
	rustup default stable
	- name: Format
	run: cargo fmt --check
	- name: Clippy
	run: cargo clippy --all-targets --all-features -- -D warnings
	- name: Test
	run: cargo test
	- name: Help
	run: cargo run -- --help
	- name: Version
	run: python3 scripts/verify-cli-version.py
	- name: Package smoke test
	run: cargo package --no-verify
	- name: Install Fixture3
	run: \|
	cargo install cargo-binstall --locked
	cargo binstall fixture3 --no-confirm
	- name: Fixture3
	run: fixture3 check --all
	- name: README prose
	run: npx --yes slopless README.md