fix: Show next run time correctly for schedules

cannaiq/src/pages/TasksDashboard.tsx

@@ -703,6 +703,28 @@ function formatTimeAgo(dateStr: string | null): string {
   return `${Math.floor(diff / 86400)}d ago`;
 }
 
+function formatNextRun(dateStr: string | null): string {
+  if (!dateStr) return '-';
+  const date = new Date(dateStr);
+  const now = new Date();
+  const diff = (date.getTime() - now.getTime()) / 1000;
+
+  // If in the past, show "overdue"
+  if (diff < 0) {
+    const absDiff = Math.abs(diff);
+    if (absDiff < 60) return 'overdue';
+    if (absDiff < 3600) return `${Math.floor(absDiff / 60)}m overdue`;
+    if (absDiff < 86400) return `${Math.floor(absDiff / 3600)}h overdue`;
+    return `${Math.floor(absDiff / 86400)}d overdue`;
+  }
+
+  // Future time
+  if (diff < 60) return `in ${Math.round(diff)}s`;
+  if (diff < 3600) return `in ${Math.floor(diff / 60)}m`;
+  if (diff < 86400) return `in ${Math.floor(diff / 3600)}h ${Math.floor((diff % 3600) / 60)}m`;
+  return `in ${Math.floor(diff / 86400)}d ${Math.floor((diff % 86400) / 3600)}h`;
+}
+
 export default function TasksDashboard() {
   const [tasks, setTasks] = useState<Task[]>([]);
   const [counts, setCounts] = useState<TaskCounts | null>(null);
@@ -1235,7 +1257,7 @@ export default function TasksDashboard() {
                             {schedule.last_run_at ? formatTimeAgo(schedule.last_run_at) : '-'}
                           </td>
                           <td className="px-4 py-3 text-sm text-gray-600">
-                            {schedule.next_run_at ? formatTimeAgo(schedule.next_run_at) : '-'}
+                            {schedule.next_run_at ? formatNextRun(schedule.next_run_at) : '-'}
                           </td>
                           <td className="px-4 py-3">
                             <span