FTM: Preliminary Resonance Testing support #896

	#
	# ci-validate-lines.yml
	# Validate that all text files are unchanged by linesformat.py
	#

	name: CI - Validate Source Files

	on:
	pull_request:
	branches:
	- bugfix-2.1.x
	- 2.1.x
	push:
	branches:
	- bugfix-2.1.x
	- 2.1.x

	jobs:
	validate_source_files:
	name: Validate Source Files
	if: github.repository == 'MarlinFirmware/Marlin'

	runs-on: ubuntu-22.04

	steps:
	- name: Check out the PR
	uses: actions/checkout@v4

	- name: Cache node_modules
	uses: actions/cache@v4
	with:
	path: node_modules
	key: ${{ runner.os }}-npm-lines-v1
	restore-keys: \|
	${{ runner.os }}-npm-lines-

	- name: Validate text file formatting
	run: \|
	npm install --save-dev prettier
	make validate-lines -j

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