refactor & improvements

frontend/playwright.config.ts

@@ -0,0 +1,21 @@
+import { defineConfig } from '@playwright/test'
+
+export default defineConfig({
+  testDir: './tests/visual',
+  outputDir: './tests/visual/test-results',
+  use: {
+    baseURL: 'http://localhost:5173',
+    viewport: { width: 1400, height: 900 },
+  },
+  webServer: {
+    command: 'bun run dev',
+    port: 5173,
+    reuseExistingServer: true,
+    timeout: 30000,
+  },
+  expect: {
+    toHaveScreenshot: {
+      maxDiffPixelRatio: 0.01,
+    },
+  },
+})