test: verify CI/PR automation #6

	name: CI

	on:
	pull_request:
	branches: [main]
	paths:
	- 'backend/*/.py'
	- 'backend/requirements.txt'
	- 'Dockerfile'
	- 'docker-compose.yml'
	- '.github/workflows/**'

	jobs:
	code-check:
	name: Code Check
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.11'
	cache: 'pip'

	- name: Install dependencies
	run: \|
	pip install -r backend/requirements.txt flake8

	- name: Get changed Python files
	id: changed
	run: \|
	FILES=$(git diff --name-only origin/${{ github.base_ref }}...HEAD -- '.py' 'backend//.py' \|\| true)
	echo "files<<EOF" >> $GITHUB_OUTPUT
	echo "$FILES" >> $GITHUB_OUTPUT
	echo "EOF" >> $GITHUB_OUTPUT

	- name: Syntax check
	run: \|
	FILES="${{ steps.changed.outputs.files }}"
	if [ -n "$FILES" ]; then
	for f in $FILES; do
	if [ -f "$f" ]; then
	python -m py_compile "$f" \|\| exit 1
	fi
	done
	fi

	- name: Flake8 (critical errors only)
	run: \|
	FILES="${{ steps.changed.outputs.files }}"
	if [ -n "$FILES" ]; then
	flake8 --select=E9,F63,F7,F82 $FILES \|\| exit 1
	fi

	- name: Module import test
	run: \|
	cd backend
	python -c "from main import app"

	docker-build:
	name: Docker Build
	runs-on: ubuntu-latest
	needs: code-check
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Build Docker image
	run: docker build -t chatraw:test .

	- name: Smoke test
	run: docker run --rm chatraw:test python -c "print('✅ Docker OK')"

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