test: [ENG-08] add verified TS coverage and paired performance reports

playwright.performance.config.js

@@ -0,0 +1,25 @@
+import assert from 'node:assert/strict'
+import process from 'node:process'
+import { defineConfig } from '@playwright/test'
+import base from './playwright.config.js'
+
+assert(process.env.ARTPLAYER_BROWSER_ARTIFACTS, 'Performance requires ARTPLAYER_BROWSER_ARTIFACTS from yarn test:package')
+
+export default defineConfig({
+  ...base,
+  testDir: './test/performance',
+  timeout: 180000,
+  fullyParallel: false,
+  workers: 1,
+  outputDir: 'refactor/.cache/performance/browser/results',
+  reporter: [
+    ['list'],
+    ['json', { outputFile: 'refactor/.cache/performance/browser/report.json' }],
+  ],
+  use: {
+    ...base.use,
+    trace: 'off',
+    video: 'off',
+    screenshot: 'only-on-failure',
+  },
+})