feat: Add isoToKebabDatetime helper

frontend/src/helpers/time/isoToKebabDatetime.ts

@@ -0,0 +1,19 @@
+import type {DateISO} from '@/types/DateISO'
+import type {DatetimeKebab} from '@/types/DatetimeKebab'
+
+// ✅ Format a date to YYYY-MM-DD HH:MM
+function padTo2Digits(num: number) {
+  return num.toString().padStart(2, '0')
+}
+
+export function isoToKebabDatetime(isoDate: DateISO) {
+	const date = new Date(isoDate)
+	return [
+		date.getFullYear(),
+		padTo2Digits(date.getMonth() + 1), // January is 0, but we want it to be 1
+		padTo2Digits(date.getDate()),
+	].join('-') + ' ' + [
+    padTo2Digits(date.getHours()),
+    padTo2Digits(date.getMinutes()),
+  ].join(':') as DatetimeKebab
+}