Implement UI language switch and i18n for legal pages #1

	# SPDX-FileCopyrightText: 2025 PeARS Project, <community@pearsproject.org>
	#
	# SPDX-License-Identifier: AGPL-3.0-only

	name: Compile translations

	on:
	push:
	branches:
	- main
	paths:
	- 'translations/*/.po'
	pull_request:
	branches:
	- '*'
	paths:
	- 'translations/*/.po'

	jobs:
	compile:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	ref: ${{ github.head_ref \|\| github.ref_name }}
	token: ${{ secrets.GITHUB_TOKEN }}

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'

	- name: Install Babel
	run: pip install Babel

	- name: Compile .po to .mo
	run: pybabel compile -d translations

	- name: Check for changes
	id: changes
	run: \|
	if git diff --quiet translations/; then
	echo "changed=false" >> "$GITHUB_OUTPUT"
	else
	echo "changed=true" >> "$GITHUB_OUTPUT"
	fi

	- name: Commit compiled translations
	if: steps.changes.outputs.changed == 'true' && github.event_name == 'push'
	run: \|
	git config user.name "github-actions[bot]"
	git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
	git add translations/*/.mo
	git commit -m "Compile translation files (.po → .mo)"
	git push

	- name: Warn about outdated .mo files in PR
	if: steps.changes.outputs.changed == 'true' && github.event_name == 'pull_request'
	run: \|
	echo "::warning::The .mo files are out of date with the .po files. They will be auto-compiled on merge to main."

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