feat(tst-020): Playwright visual regression config for ceo-web (CC-047)

playwright.config.ts

@@ -0,0 +1,34 @@
+import { defineConfig, devices } from '@playwright/test';
+
+/**
+ * TST-020: Visual Regression Test Config — CC-047
+ *
+ * Runs against ceo-web (Next.js 15).
+ * Usage:
+ *   pnpm exec playwright test           # run all
+ *   pnpm exec playwright test --update-snapshots  # update baselines
+ */
+export default defineConfig({
+  testDir: './tests/visual',
+  fullyParallel: true,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: [['html', { outputFolder: 'playwright-report' }]],
+  use: {
+    baseURL: process.env.PLAYWRIGHT_BASE_URL ?? 'http://localhost:3000',
+    trace: 'on-first-retry',
+    screenshot: 'only-on-failure',
+  },
+  projects: [
+    { name: 'chromium', use: { ...devices['Desktop Chrome'] } },
+    { name: 'mobile-chrome', use: { ...devices['Pixel 5'] } },
+  ],
+  webServer: process.env.CI
+    ? {
+        command: 'pnpm build && pnpm start',
+        url: 'http://localhost:3000',
+        reuseExistingServer: false,
+        timeout: 120_000,
+      }
+    : undefined,
+});