test: Add Playwright tests for mobile responsiveness

spec/playwright_helper.rb

@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require 'playwright'
+
+RSpec.configure do |config|
+  config.before(:suite) do
+    puts "Starting Playwright..."
+    @playwright = Playwright.create(playwright_cli_executable_path: './node_modules/.bin/playwright')
+    @browser = @playwright.chromium.launch(headless: true)
+  end
+
+  config.after(:suite) do
+    @browser.close
+    @playwright.stop
+    puts "Playwright stopped."
+  end
+
+  # Make Playwright available to all specs
+  config.before(:all) do
+    @playwright = Playwright.create(playwright_cli_executable_path: './node_modules/.bin/playwright')
+    @browser = @playwright.chromium.launch(headless: true)
+  end
+
+  config.after(:all) do
+    @browser.close
+    @playwright.stop
+  end
+end