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/fast-glob/out/utils/errno.js

@@ -0,0 +1,7 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isEnoentCodeError = void 0;
+function isEnoentCodeError(error) {
+    return error.code === 'ENOENT';
+}
+exports.isEnoentCodeError = isEnoentCodeError;