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/fastq/eslint.config.js

@@ -0,0 +1,11 @@
+const neostandard = require('neostandard')
+
+module.exports = [
+  ...neostandard(),
+  {
+    name: 'node-0.10-compatibility',
+    rules: {
+      'object-shorthand': 'off' // Disable ES6 object shorthand for Node.js 0.10 compatibility
+    }
+  }
+]