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/getDefaultOptions.d.mts

@@ -0,0 +1,26 @@
+import type { DefaultOptions } from "./_lib/defaultOptions.js";
+/**
+ * @name getDefaultOptions
+ * @category Common Helpers
+ * @summary Get default options.
+ * @pure false
+ *
+ * @description
+ * Returns an object that contains defaults for
+ * `options.locale`, `options.weekStartsOn` and `options.firstWeekContainsDate`
+ * arguments for all functions.
+ *
+ * You can change these with [setDefaultOptions](https://date-fns.org/docs/setDefaultOptions).
+ *
+ * @returns The default options
+ *
+ * @example
+ * const result = getDefaultOptions()
+ * //=> {}
+ *
+ * @example
+ * setDefaultOptions({ weekStarsOn: 1, firstWeekContainsDate: 4 })
+ * const result = getDefaultOptions()
+ * //=> { weekStarsOn: 1, firstWeekContainsDate: 4 }
+ */
+export declare function getDefaultOptions(): DefaultOptions;