style: padronizar dialogs e aplicar formatação Biome

DialogContent: padding p-6→p-10, max-w-lg→max-w-xl.
DialogFooter/AlertDialogFooter: botões com flex-1 (largura igual).
Remove gap-3/w-full redundantes de 12+ dialogs.

Reformatação Biome: line wrapping, import ordering.
Error component renomeado para evitar shadowing do global Error.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

components/calendario/event-modal.tsx

@@ -194,7 +194,7 @@ export function EventModal({ open, day, onClose, onCreate }: EventModalProps) {
 					)}
 				</div>
 
-				<DialogFooter className="flex justify-end gap-2">
+				<DialogFooter>
 					<Button variant="outline" onClick={onClose}>
 						Cancelar
 					</Button>