Update migrated js to ts and shadcn

src/utils/timeUtils.ts

@@ -0,0 +1,6 @@
+// Time utility functions
+export const timeToMinutes = (timeStr: string): number => {
+  if (!timeStr || !timeStr.includes(':')) return 0;
+  const [hours, minutes] = timeStr.split(':').map(Number);
+  return hours * 60 + minutes;
+};