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/locale/hr.mjs

@@ -0,0 +1,30 @@
+import { formatDistance } from "./hr/_lib/formatDistance.mjs";
+import { formatLong } from "./hr/_lib/formatLong.mjs";
+import { formatRelative } from "./hr/_lib/formatRelative.mjs";
+import { localize } from "./hr/_lib/localize.mjs";
+import { match } from "./hr/_lib/match.mjs";
+
+/**
+ * @category Locales
+ * @summary Croatian locale.
+ * @language Croatian
+ * @iso-639-2 hrv
+ * @author Matija Marohnić [@silvenon](https://github.com/silvenon)
+ * @author Manico [@manico](https://github.com/manico)
+ * @author Ivan Jeržabek [@jerzabek](https://github.com/jerzabek)
+ */
+export const hr = {
+  code: "hr",
+  formatDistance: formatDistance,
+  formatLong: formatLong,
+  formatRelative: formatRelative,
+  localize: localize,
+  match: match,
+  options: {
+    weekStartsOn: 1 /* Monday */,
+    firstWeekContainsDate: 1,
+  },
+};
+
+// Fallback for modularized imports:
+export default hr;