refactor: Move `ui.Theme.from_brand()` Sass code into an `.scss` file #3866

	name: Verify built assets

	on:
	push:
	branches: ["main", "rc-*"]
	pull_request:

	jobs:
	verify_js_built:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Extract node version from .nvmrc
	id: nvm
	working-directory: js
	run: \|
	echo "version=$(cat .nvmrc)" >> $GITHUB_OUTPUT

	- name: Use Node.js
	uses: actions/setup-node@v4
	with:
	node-version: "${{ steps.nvm.outputs.version }}"

	- name: Install dependencies
	run: npm ci
	working-directory: js
	env:
	NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}

	- name: Build
	run: npm run build
	working-directory: js

	- name: Check for uncommitted changes
	run: \|
	if [[ `git status --porcelain` ]]; then
	git diff
	echo "Uncommitted changes found. Please commit any changes that result from 'npm run build'."
	exit 1
	else
	echo "No uncommitted changes found."
	fi
	working-directory: js

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