修改了质量参数、添加了账户管理功能

Co-authored-by: Copilot <copilot@github.com>

app/templates/slice/plater.html

@@ -131,7 +131,7 @@
         </div> <!-- End of accordion wrapper -->
 
         <div class="mt-auto pt-3 border-top d-flex flex-column gap-2 mb-1">
-            <button class="btn btn-outline-danger w-100" onclick="clearPlate()"><i class="bi bi-trash me-2"></i>{{ _('Clear Board') }}</button>
+            <button class="btn btn-outline-danger w-100" onclick="customConfirm('{{ _('Are you sure you want to clear the board?') }}', clearPlate)"><i class="bi bi-trash me-2"></i>{{ _('Clear Board') }}</button>
             <button class="btn btn-primary w-100 py-2 fs-5 shadow-sm" onclick="mergeAndSlice()" id="btn-merge"><i class="bi bi-gear-fill me-2" id="merge-icon"></i><span id="merge-text">{{ _('Merge & Slice') }}</span></button>
         </div>