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/@radix-ui/react-context/dist/index.d.ts

@@ -0,0 +1,21 @@
+import * as React from 'react';
+
+declare function createContext<ContextValueType extends object | null>(rootComponentName: string, defaultContext?: ContextValueType): readonly [React.FC<ContextValueType & {
+    children: React.ReactNode;
+}>, (consumerName: string) => ContextValueType];
+type Scope<C = any> = {
+    [scopeName: string]: React.Context<C>[];
+} | undefined;
+type ScopeHook = (scope: Scope) => {
+    [__scopeProp: string]: Scope;
+};
+interface CreateScope {
+    scopeName: string;
+    (): ScopeHook;
+}
+declare function createContextScope(scopeName: string, createContextScopeDeps?: CreateScope[]): readonly [<ContextValueType extends object | null>(rootComponentName: string, defaultContext?: ContextValueType) => readonly [React.FC<ContextValueType & {
+    scope: Scope<ContextValueType>;
+    children: React.ReactNode;
+}>, (consumerName: string, scope: Scope<ContextValueType | undefined>) => ContextValueType], CreateScope];
+
+export { type CreateScope, type Scope, createContext, createContextScope };