refactor: remove data fetcher, use static types where possible #70

	name: Package

	on:
	workflow_dispatch:
	pull_request:
	push:
	branches:
	- main
	release:
	types:
	- published

	jobs:
	# Always build & lint package.
	build-package:
	name: Build & verify
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- uses: hynek/build-and-inspect-python-package@v2

	# Upload to real PyPI on GitHub Releases.
	release-pypi:
	name: Publish to pypi.org
	environment: release
	runs-on: ubuntu-latest
	needs: build-package
	if: github.event_name == 'release' && github.event.action == 'published'
	permissions:
	id-token: write
	attestations: write

	steps:
	- name: Download packages built by build-and-inspect-python-package
	uses: actions/download-artifact@v4
	with:
	name: Packages
	path: dist

	- name: Generate artifact attestation for sdist and wheel
	uses: actions/attest-build-provenance@1c608d11d69870c2092266b3f9a6f3abbf17002c # v1.4.3
	with:
	subject-path: "dist/pyproject*"

	- name: Upload package to PyPI
	uses: pypa/gh-action-pypi-publish@release/v1
	with:
	attestations: true

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