Implement Discord appeal functionality, including database schema, API endpoints, front-end form, and Discord message handling.

frontend/src/app/pages/reference/nickgenerator/nick-generator.component.html

@@ -40,7 +40,7 @@
                 <mat-form-field
                   class="colorField"
                   appearance="outline"
-                  [style.visibility]="(part.continuation && i>0 && parts[i-1]?.gradient && part.gradient) ? 'hidden' : 'visible'">
+                  [style.visibility]="(part.continuation && i>0 && parts[i-1].gradient && part.gradient) ? 'hidden' : 'visible'">
                   <mat-label>Color A</mat-label>
                   <input
                     matInput
@@ -67,7 +67,7 @@
                   class="checkbox"
                   [(ngModel)]="part.continuation"
                   (change)="onContinuationToggle(i)"
-                  [disabled]="i===0 || !part.gradient || !parts[i-1]?.gradient"
+                  [disabled]="i===0 || !part.gradient || !parts[i-1].gradient"
                 >Continuation
                 </mat-checkbox
                 >