fix: prevent marking future jobs as completed

app/[lang]/dashboard/[planId]/_components/plan-dashboard.tsx

@@ -227,6 +227,8 @@ export function PlanDashboard({ plan, dict, settingsDict, lang }: PlanDashboardP
                                                     <span>{dict.jobDone}</span>
                                                 </div>
                                             ) : (
+                                                // Only show button if day is today or in the past
+                                                day <= new Date() || isSameDay(day, new Date()) ? (
                                                     <Button
                                                         variant="outline"
                                                         size="sm"
@@ -236,6 +238,7 @@ export function PlanDashboard({ plan, dict, settingsDict, lang }: PlanDashboardP
                                                         <Check className="w-4 h-4" />
                                                         {dict.markDone}
                                                     </Button>
+                                                ) : null
                                             )}
                                         </div>
                                     )}