ci: [CI-BROWSER-01] separate source and installed browser scopes

playwright.installed.config.js

@@ -0,0 +1,10 @@
+import assert from 'node:assert/strict'
+import process from 'node:process'
+import { defineConfig } from '@playwright/test'
+import base from './playwright.config.js'
+import { browserScopeConfig, installedPackages } from './scripts/browser-validation/scope.ts'
+import { verifyInstalledArtifacts } from './scripts/installed-artifacts.mjs'
+
+assert(process.env.ARTPLAYER_BROWSER_ARTIFACTS, 'Use yarn test:browser:installed with checked tarballs')
+verifyInstalledArtifacts(process.cwd(), process.env.ARTPLAYER_BROWSER_ARTIFACTS, installedPackages)
+export default defineConfig(base, browserScopeConfig('installed'))