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/@nodelib/fs.stat/out/settings.d.ts

@@ -0,0 +1,16 @@
+import * as fs from './adapters/fs';
+export interface Options {
+    followSymbolicLink?: boolean;
+    fs?: Partial<fs.FileSystemAdapter>;
+    markSymbolicLink?: boolean;
+    throwErrorOnBrokenSymbolicLink?: boolean;
+}
+export default class Settings {
+    private readonly _options;
+    readonly followSymbolicLink: boolean;
+    readonly fs: fs.FileSystemAdapter;
+    readonly markSymbolicLink: boolean;
+    readonly throwErrorOnBrokenSymbolicLink: boolean;
+    constructor(_options?: Options);
+    private _getValue;
+}