Add Playwright visual smoke test

playwright.config.js

@@ -0,0 +1,25 @@
+// Rôle : configure les diagnostics navigateur Playwright sans les intégrer au check de prod.
+import { defineConfig, devices } from "@playwright/test";
+
+export default defineConfig({
+  testDir: "./e2e",
+  fullyParallel: true,
+  reporter: [["list"], ["html", { open: "never" }]],
+  use: {
+    baseURL: "http://localhost:5173",
+    trace: "on-first-retry",
+    screenshot: "only-on-failure"
+  },
+  webServer: {
+    command: "npm run dev",
+    url: "http://localhost:5173",
+    reuseExistingServer: true,
+    timeout: 120000
+  },
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] }
+    }
+  ]
+});