Add Playwright E2E tests replacing Cypress with MSW integration

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vite.config.js

@@ -93,6 +93,7 @@ export default defineConfig(({ mode }) => {
         jsdom: { url: "http://localhost:3000" },
       },
       setupFiles: ["./tests/setup-msw.js"],
+      exclude: ["tests/e2e/**", "node_modules/**"],
       // reporter: ['text', 'json', 'html', 'vue'],
     },
   };