feat: update frontend paths to include trailing slashes for consistency

frontend/playwright.config.ts

@@ -20,7 +20,7 @@ export default defineConfig({
 
     use: {
         // URL base del server (frontend servito su /badge)
-        baseURL: 'http://localhost:8000/badge',
+        baseURL: 'http://localhost:8000/',
 
         // Rallenta le azioni per vedere cosa succede
         launchOptions: {
@@ -55,7 +55,7 @@ export default defineConfig({
     // Server da avviare prima dei test
     webServer: {
         command: 'cd .. && ./dev.sh server -d backend-mock/data/users_test.json',
-        url: 'http://localhost:8000',
+        url: 'http://localhost:8000/badge/',
         reuseExistingServer: !process.env.CI,
         timeout: 30000,
     },