feat(frontend): extend schedule dialog to support show/series selection

k-tv-frontend/app/(main)/library/components/schedule-from-library-dialog.tsx

@@ -114,8 +114,12 @@ export function ScheduleFromLibraryDialog({ selectedItems, selectedShows }: Prop
 
   const canConfirm = !!channelId && selectedDays.size > 0;
   const daysLabel = [...selectedDays].map(d => WEEKDAY_LABELS[d]).join(", ");
+  const hasShows = selectedShows && selectedShows.length > 0;
+  const contentLabel = hasShows
+    ? (selectedShows!.length === 1 ? selectedShows![0].series_name : `${selectedShows!.length} shows`)
+    : `${selectedItems.length} item(s)`;
   const preview = canConfirm
-    ? `${selectedDays.size} block(s) will be created on ${selectedChannel?.name} — ${daysLabel} at ${startTime}, ${strategy}`
+    ? `${selectedDays.size} block(s) of ${contentLabel} will be created on ${selectedChannel?.name} — ${daysLabel} at ${startTime}, ${strategy}`
     : null;
 
   return (