docs(README): Add new GitHub Action to install section #1

	# SPDX-FileCopyrightText: 2026 Dominik Wombacher <[email protected]>
Check failure on line 1 in .github/workflows/test-install.yml View workflow run for this annotation GitHub Actions / .github/workflows/test-install.yml Invalid workflow file `(Line: 32, Col: 15): Unrecognized named-value: 'env'. Located at position 1 within expression: env.LATEST_TAG`
	#
	# SPDX-License-Identifier: CC0-1.0

	name: "Test params2env GitHub action"

	on:
	release:
	types: [published]
	workflow_dispatch:

	jobs:
	test-install:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	arch: [X64, ARM64]

	steps:
	- name: Log runner info
	run: \|
	echo "Testing on $RUNNER_OS / $RUNNER_ARCH"

	- name: Get latest release tag
	id: latest
	run: \|
	LATEST_TAG=$(GH_PAGER= gh release list --repo wombelix/params2env --limit 1 --json tagName \| jq -r '.[0].tagName')
	echo "LATEST_TAG=$LATEST_TAG" >> $GITHUB_ENV
	echo "Latest release: $LATEST_TAG"

	- name: Install params2env
	uses: wombelix/params2env@${{ env.LATEST_TAG }}

	- name: Verify installed version
	run: \|
	INSTALLED_VERSION=$(params2env --version)
	echo "Installed params2env version: $INSTALLED_VERSION"
	if [[ "$INSTALLED_VERSION" != "${LATEST_TAG#v}" ]]; then
	echo "Installed version does not match latest release tag $LATEST_TAG!"
	exit 1
	fi
	echo "Installed version matches latest release."

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