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/react-resizable-panels/dist/react-resizable-panels.node.cjs.mjs

@@ -0,0 +1,19 @@
+export {
+  DATA_ATTRIBUTES,
+  Panel,
+  PanelGroup,
+  PanelResizeHandle,
+  assert,
+  disableGlobalCursorStyles,
+  enableGlobalCursorStyles,
+  getIntersectingRectangle,
+  getPanelElement,
+  getPanelElementsForGroup,
+  getPanelGroupElement,
+  getResizeHandleElement,
+  getResizeHandleElementIndex,
+  getResizeHandleElementsForGroup,
+  getResizeHandlePanelIds,
+  intersects,
+  setNonce
+} from "./react-resizable-panels.node.cjs.js";