feat: initial frontend codebase — EnCoach v3

React 18 + TypeScript + Vite 5 + Tailwind CSS + shadcn/ui frontend:
- Multi-role auth: student, teacher, admin, corporate, agent, developer
- Student portal: dashboard, courses, adaptive learning, exams, placement
- Teacher portal: courses, assignments, grading, attendance, AI workbench
- Admin portal: 60+ management pages (LMS, exams, users, entities, AI)
- AI-powered features: study coach, generation page, gap analysis, TTS
- Exam system: session, auto-save, results, grading queue
- Full IELTS workflow: reading/listening/writing/speaking modules

Made-with: Cursor

tsconfig.json

@@ -0,0 +1,24 @@
+{
+  "compilerOptions": {
+    "allowJs": true,
+    "noImplicitAny": false,
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "paths": {
+      "@/*": [
+        "./src/*"
+      ]
+    },
+    "skipLibCheck": true,
+    "strictNullChecks": false
+  },
+  "files": [],
+  "references": [
+    {
+      "path": "./tsconfig.app.json"
+    },
+    {
+      "path": "./tsconfig.node.json"
+    }
+  ]
+}