Grade 5 Math Test (Vite + React)

How to run:
1) Install Node.js (LTS) from https://nodejs.org
2) Open a terminal in this folder
3) Run:
   npm install
   npm run dev
4) Open the shown URL (usually http://localhost:5173)

Images:
Place the diagram images into public/images/ with names:
q15.png, q16.png, q31.png, q33.png, q36.png, q37.png

Math rendering:
Uses KaTeX. Fractions are written like \frac{1}{2} and rendered automatically.

Notes:
- No backtracking: selecting an answer advances to next question.
- Timer: 30 minutes, auto-submit when time runs out.
- Result screen locks the attempt.