Add GitHub Actions workflow for release automation #18

	name: CI

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go-version: ['1.21', '1.22', '1.23']

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go-version }}

	- name: Cache Go modules
	uses: actions/cache@v4
	with:
	path: ~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-

	- name: Download dependencies
	run: go mod download

	- name: Run tests
	run: make test

	- name: Run benchmarks
	run: make bench

	- name: Upload coverage to Codecov
	if: matrix.go-version == '1.23'
	uses: codecov/codecov-action@v4
	with:
	file: ./coverage.out
	fail_ci_if_error: false

	lint:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: '1.23'

	- name: Run golangci-lint
	uses: golangci/golangci-lint-action@v6
	with:
	version: latest
	args: --timeout=5m

	build:
	runs-on: ubuntu-latest
	needs: [test, lint]
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest]
	go-version: ['1.23']

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go-version }}

	- name: Build
	run: make build

	- name: Test installation
	run: \|
	sudo make install
	ccswitch --version

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