feat: redesign Exams List page to show submitted custom exams

- Added Custom Exams tab showing all exams from Generation page
- Displays title, module badges, duration, and status
- Added Create Exam button
- Kept Exam Sessions tab for institutional sessions
- Search filters across exams

Made-with: Cursor

node_modules/date-fns/isSameHour.mjs

@@ -0,0 +1,36 @@
+import { startOfHour } from "./startOfHour.mjs";
+
+/**
+ * @name isSameHour
+ * @category Hour Helpers
+ * @summary Are the given dates in the same hour (and same day)?
+ *
+ * @description
+ * Are the given dates in the same hour (and same day)?
+ *
+ * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
+ *
+ * @param dateLeft - The first date to check
+ * @param dateRight - The second date to check
+ *
+ * @returns The dates are in the same hour (and same day)
+ *
+ * @example
+ * // Are 4 September 2014 06:00:00 and 4 September 06:30:00 in the same hour?
+ * const result = isSameHour(new Date(2014, 8, 4, 6, 0), new Date(2014, 8, 4, 6, 30))
+ * //=> true
+ *
+ * @example
+ * // Are 4 September 2014 06:00:00 and 5 September 06:00:00 in the same hour?
+ * const result = isSameHour(new Date(2014, 8, 4, 6, 0), new Date(2014, 8, 5, 6, 0))
+ * //=> false
+ */
+export function isSameHour(dateLeft, dateRight) {
+  const dateLeftStartOfHour = startOfHour(dateLeft);
+  const dateRightStartOfHour = startOfHour(dateRight);
+
+  return +dateLeftStartOfHour === +dateRightStartOfHour;
+}
+
+// Fallback for modularized imports:
+export default isSameHour;