migrate to Zig 0.16: replace libxev with synchronous POSIX I/O #39

	name: CI

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

	jobs:
	test:
	name: Test (${{ matrix.os }})
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: recursive

	- uses: jdx/mise-action@v3

	- name: Install Cap'n Proto compiler (Linux)
	if: runner.os == 'Linux'
	run: \|
	if command -v sudo >/dev/null 2>&1; then
	sudo apt-get update
	sudo apt-get install -y capnproto libcapnp-dev
	else
	apt-get update
	apt-get install -y capnproto libcapnp-dev
	fi

	- name: Run tests
	run: zig build test --summary all

	- name: Check compilation
	run: zig build check

	fmt-check:
	name: Format check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- uses: jdx/mise-action@v3

	- name: Check formatting
	run: zig fmt --check --exclude tests/golden --exclude src/rpc/gen src/ tests/ bench/ tools/

	bench-check:
	name: Benchmark regression check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: recursive

	- uses: jdx/mise-action@v3

	- name: Run benchmark regression checks
	run: zig build bench-check

	wasm-build:
	name: WASM build
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: recursive

	- uses: jdx/mise-action@v3

	- name: Build WASM host
	run: zig build wasm-host

	release-build:
	name: Release build
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: recursive

	- uses: jdx/mise-action@v3

	- name: Build ReleaseSafe
	run: zig build -Doptimize=ReleaseSafe

Provide feedback