feat(v3): restructure project + add complete frontend

- Restructure: move backend from new_project/ to backend/
- Add full React/TypeScript frontend (37 pages, 17 services, 16 type defs, 11 query hooks)
- Add docs/ with SRS specs, user stories, and workflow documentation
- Update .gitignore for new directory layout

Workflows implemented:
  WF1 User Signup, WF2 Placement Test, WF3 Exam Configuration,
  WF4 General English Exam, WF5 Course Generation,
  WF6 Entity Student Onboarding, AI Course Generation,
  Adaptive Learning Engine UI, White-Label Branding, Score Release

Made-with: Cursor

src/pages/ExamPage.tsx

@@ -0,0 +1,54 @@
+import { Card, CardContent } from "@/components/ui/card";
+import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
+import { GraduationCap, Play, Sparkles } from "lucide-react";
+import AiTipBanner from "@/components/ai/AiTipBanner";
+
+export default function ExamPage() {
+  return (
+    <div className="flex flex-col items-center justify-center min-h-[70vh] gap-4 max-w-md mx-auto">
+      <AiTipBanner tip="Based on your practice history, focus on Reading Part 3 (sentence completion) — your accuracy there is 58% vs 82% average. Budget 20 min for the writing section." variant="recommendation" />
+
+      <Card className="border-0 shadow-sm w-full">
+        <CardContent className="p-8 text-center space-y-6">
+          <div className="mx-auto h-16 w-16 rounded-full bg-primary/10 flex items-center justify-center">
+            <GraduationCap className="h-8 w-8 text-primary" />
+          </div>
+          <div>
+            <h2 className="text-xl font-bold mb-1">Ready to Start?</h2>
+            <p className="text-muted-foreground text-sm">IELTS Academic Mock Exam</p>
+          </div>
+          <div className="space-y-2">
+            <div className="flex justify-between text-sm">
+              <span className="text-muted-foreground">Student</span>
+              <span className="font-medium">Sarah Johnson</span>
+            </div>
+            <div className="flex justify-between text-sm">
+              <span className="text-muted-foreground">Level</span>
+              <Badge variant="outline">B2</Badge>
+            </div>
+            <div className="flex justify-between text-sm">
+              <span className="text-muted-foreground">Modules</span>
+              <span className="font-medium">4</span>
+            </div>
+            <div className="flex justify-between text-sm">
+              <span className="text-muted-foreground">Duration</span>
+              <span className="font-medium">180 min</span>
+            </div>
+            <div className="flex justify-between text-sm">
+              <span className="text-muted-foreground">Mode</span>
+              <Badge variant="secondary">Practice</Badge>
+            </div>
+          </div>
+          <div className="rounded-lg bg-primary/5 border border-primary/20 p-3 text-left">
+            <p className="text-xs font-semibold text-primary flex items-center gap-1 mb-1"><Sparkles className="h-3 w-3" /> AI Pre-Exam Tip</p>
+            <p className="text-xs text-muted-foreground">Your last mock scored 7.5. To target 8.0, focus on time management in Writing Task 2 — you spent 45 min last time vs recommended 40 min.</p>
+          </div>
+          <Button className="w-full" size="lg">
+            <Play className="h-4 w-4 mr-2" /> Begin Exam
+          </Button>
+        </CardContent>
+      </Card>
+    </div>
+  );
+}