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/embla-carousel/esm/components/Axis.d.ts

@@ -0,0 +1,14 @@
+import { NodeRectType } from './NodeRects.js';
+export type AxisOptionType = 'x' | 'y';
+export type AxisDirectionOptionType = 'ltr' | 'rtl';
+type AxisEdgeType = 'top' | 'right' | 'bottom' | 'left';
+export type AxisType = {
+    scroll: AxisOptionType;
+    cross: AxisOptionType;
+    startEdge: AxisEdgeType;
+    endEdge: AxisEdgeType;
+    measureSize: (nodeRect: NodeRectType) => number;
+    direction: (n: number) => number;
+};
+export declare function Axis(axis: AxisOptionType, contentDirection: AxisDirectionOptionType): AxisType;
+export {};