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/subDays.js

@@ -0,0 +1,27 @@
+"use strict";
+exports.subDays = subDays;
+var _index = require("./addDays.js");
+
+/**
+ * @name subDays
+ * @category Day Helpers
+ * @summary Subtract the specified number of days from the given date.
+ *
+ * @description
+ * Subtract the specified number of days from the given date.
+ *
+ * @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 date - The date to be changed
+ * @param amount - The amount of days to be subtracted.
+ *
+ * @returns The new date with the days subtracted
+ *
+ * @example
+ * // Subtract 10 days from 1 September 2014:
+ * const result = subDays(new Date(2014, 8, 1), 10)
+ * //=> Fri Aug 22 2014 00:00:00
+ */
+function subDays(date, amount) {
+  return (0, _index.addDays)(date, -amount);
+}