refactor: make invalid states unrepresentable #463

Workflow file for this run

	name: CI

	on:
	pull_request:
	push:
	branches: [main]

	permissions:
	contents: read

	concurrency:
	group: ci-${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	test:
	name: Cross-platform test (${{ matrix.os }})
	runs-on: ${{ matrix.os }}
	timeout-minutes: 20
	strategy:
	fail-fast: false
	matrix:
	# The coverage job runs the complete suite on Linux.
	os: [macos-latest, windows-latest]
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- run: go test -short -p=8 -parallel=8 ./...

	validate-agents-md:
	name: Validate AGENTS.md
	runs-on: ubuntu-latest
	timeout-minutes: 5
	steps:
	- uses: actions/checkout@v6
	- run: make docs-check

	formatting:
	name: Go formatting
	runs-on: ubuntu-latest
	timeout-minutes: 5
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- name: Check formatting
	run: make fmt-check

	golangci-lint:
	name: Go linters
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- uses: golangci/golangci-lint-action@v7
	with:
	version: v2.12.2
	args: --timeout=5m

	check-large-files:
	name: Check file sizes
	runs-on: ubuntu-latest
	timeout-minutes: 5
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0
	- name: Prevent growth of oversized Go files
	shell: bash
	env:
	EVENT_NAME: ${{ github.event_name }}
	PR_BASE: ${{ github.event.pull_request.base.sha }}
	PUSH_BEFORE: ${{ github.event.before }}
	run: \|
	base=$PUSH_BEFORE
	if [[ $EVENT_NAME == pull_request ]]; then
	base=$PR_BASE
	fi
	if [[ -z $base \|\| $base =~ ^0+$ ]] \|\| ! git cat-file -e "$base^{commit}"; then
	base=$(git rev-list --max-parents=0 HEAD)
	fi

	errors=0
	while IFS= read -r file; do
	[[ -z $file \|\| ! -f $file ]] && continue
	current_lines=$(wc -l < "$file")
	base_lines=0
	if git cat-file -e "$base:$file" 2>/dev/null; then
	base_lines=$(git show "$base:$file" \| wc -l)
	fi
	if (( current_lines > 800 && current_lines > base_lines )); then
	echo "::error file=$file::$file grew from $base_lines to $current_lines lines; oversized Go files may not grow"
	errors=$((errors + 1))
	elif (( current_lines > 800 )); then
	echo "::warning file=$file::$file remains oversized at $current_lines lines (baseline: $base_lines)"
	fi
	done < <(git diff --name-only --diff-filter=ACMR "$base"...HEAD -- '*.go')

	if (( errors > 0 )); then
	exit 1
	fi
	echo "No changed oversized Go file grew"

	coverage:
	name: Test coverage
	runs-on: ubuntu-latest
	timeout-minutes: 15
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- name: Install gotestsum
	run: go install gotest.tools/gotestsum@latest
	- name: Run tests with timing and flaky detection
	run: \|
	gotestsum --junitfile test-results.xml --rerun-fails=2 --rerun-fails-max-failures=5 --packages="./..." -- \
	-short -p=8 -parallel=8 \
	-coverprofile=coverage.out \
	-covermode=set \
	-coverpkg=./internal/... \
	-timeout 180s
	- name: Check coverage threshold
	run: \|
	coverage=$(go tool cover -func=coverage.out \| tail -n1 \| awk '{print $NF}' \| tr -d '%')
	awk -v coverage="$coverage" 'BEGIN { if (coverage < 70) exit 1 }' \|\| { \
	echo "Coverage $coverage% is below 70% threshold"; \
	exit 1; \
	}
	echo "Coverage: $coverage% (passes 70% threshold)"
	- name: Upload test results
	if: always()
	uses: actions/upload-artifact@v7
	with:
	name: test-results
	path: test-results.xml
	- name: Upload coverage artifact
	if: always()
	uses: actions/upload-artifact@v7
	with:
	name: coverage
	path: coverage.out

	race:
	name: Focused race tests
	runs-on: ubuntu-latest
	timeout-minutes: 15
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- run: make test-race

	integration:
	name: Integration tests
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- run: make test-integration

	tidy:
	name: Module tidy check
	runs-on: ubuntu-latest
	timeout-minutes: 5
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- name: Check go.mod is tidy
	run: make tidy-check

	generated:
	name: Generated outputs
	runs-on: ubuntu-latest
	timeout-minutes: 5
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- run: make generate-check

	security:
	name: Security scan
	runs-on: ubuntu-latest
	timeout-minutes: 15
	permissions:
	contents: read
	security-events: write
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- name: Initialize CodeQL
	uses: github/codeql-action/init@v3
	with:
	languages: go
	- name: Build
	run: go build ./...
	- name: Perform CodeQL analysis
	uses: github/codeql-action/analyze@v3

	npm:
	name: npm launcher and package metadata
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@v6
	- uses: actions/setup-node@v7
	with:
	node-version: 22
	- uses: actions/setup-go@v7
	with:
	go-version-file: go.mod
	cache: true
	cache-dependency-path: go.sum
	- run: npm run test:npm
	- run: npm run test:e2e
	- run: npm pack --dry-run

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refactor: make invalid states unrepresentable #463

Workflow file

refactor: make invalid states unrepresentable #463

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