feat: support configurable connection-pool sizing #27

	name: CI

	on:
	push:
	branches: [main, "claude/**"]
	pull_request:

	# Cancel superseded runs on the same ref.
	concurrency:
	group: ci-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	lint:
	name: Lint & type-check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set up uv
	uses: astral-sh/setup-uv@v5
	with:
	python-version: "3.12"
	enable-cache: true
	- run: uv sync --frozen
	- name: ruff (lint)
	run: uv run ruff check .
	- name: ruff (format)
	run: uv run ruff format --check .
	- name: mypy
	run: uv run mypy src/mcpg

	test:
	name: Tests (PG ${{ matrix.postgres }})
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	postgres: ["14", "15", "16", "17"]
	services:
	postgres:
	image: postgres:${{ matrix.postgres }}
	env:
	POSTGRES_USER: postgres
	POSTGRES_PASSWORD: postgres
	POSTGRES_DB: mcpg_test
	ports:
	- 5432:5432
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 10
	steps:
	- uses: actions/checkout@v4
	- name: Set up uv
	uses: astral-sh/setup-uv@v5
	with:
	python-version: "3.12"
	enable-cache: true
	- run: uv sync --frozen
	# Runs unit, vendored-kernel, and integration suites with the coverage
	# gate (fail_under = 90, authored code only) against each PG version.
	- name: pytest
	env:
	MCPG_TEST_DATABASE_URL: postgresql://postgres:postgres@localhost:5432/mcpg_test
	run: uv run pytest -q --cov

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