fix(i18n): fix curly quotes and missing @ alias in vite config

frontend/src/components/Step2EnvSetup.vue

@@ -501,7 +501,7 @@
                       </span>
                     </div>
                     <div class="auto-desc">
-                      <p class="highlight-tip" @click="useCustomRounds = true">{{ $t(‘step2.customTip’) }} ➝</p>
+                      <p class="highlight-tip" @click="useCustomRounds = true">{{ $t('step2.customTip') }} ➝</p>
                     </div>
                   </div>
                 </div>

frontend/vite.config.js

@@ -7,6 +7,7 @@ export default defineConfig({
   plugins: [vue()],
   resolve: {
     alias: {
+      '@': path.resolve(__dirname, 'src'),
       '@locales': path.resolve(__dirname, '../locales')
     }
   },