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/.vite/deps/chunk-43G6IMPT.js

@@ -0,0 +1,24 @@
+import {
+  require_react
+} from "./chunk-QCHXOAYK.js";
+import {
+  __toESM
+} from "./chunk-WOOG5QLI.js";
+
+// node_modules/@radix-ui/react-use-previous/dist/index.mjs
+var React = __toESM(require_react(), 1);
+function usePrevious(value) {
+  const ref = React.useRef({ value, previous: value });
+  return React.useMemo(() => {
+    if (ref.current.value !== value) {
+      ref.current.previous = ref.current.value;
+      ref.current.value = value;
+    }
+    return ref.current.previous;
+  }, [value]);
+}
+
+export {
+  usePrevious
+};
+//# sourceMappingURL=chunk-43G6IMPT.js.map