feat: Add assigned user initial to project details and update translations

src/app/projects/page.js

@@ -471,7 +471,7 @@ export default function ProjectListPage() {
 										{t('common.status') || 'Status'}
 									</th>
 									<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 dark:text-gray-300 w-14 md:w-16">
-										Placeholder
+										{t('projects.assigned') || 'Przypisany'}
 									</th>
 								</tr>
 							</thead>
@@ -563,7 +563,15 @@ export default function ProjectListPage() {
 										</div>
 									</td>
 									<td className="px-2 py-3">
-										<span className="text-xs text-gray-500">Placeholder</span>
+										{project.assigned_to_initial ? (
+											<div className="flex items-center justify-center">
+												<span className="inline-flex items-center justify-center w-8 h-8 bg-blue-100 dark:bg-blue-900 text-blue-800 dark:text-blue-200 rounded-full text-xs font-semibold">
+													{project.assigned_to_initial}
+												</span>
+											</div>
+										) : (
+											<span className="text-xs text-gray-400">-</span>
+										)}
 									</td>
 								</tr>
 							))}