fix: use persistent httpx client and add 502/503 auto-retry #49

	name: CI

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

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.9', '3.11', '3.12']

	steps:
	- uses: actions/checkout@v4

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

	- name: Install dependencies
	run: pip install -e ".[dev,solana]"

	- name: Check formatting
	run: black --check .

	- name: Lint
	run: ruff check .

	- name: Run unit tests
	run: pytest tests/unit

Provide feedback