fix: update CONTRIBUTING.md to use Bun instead of npm

- Changed npm install to bun install
- Changed npm run build to bun run build
- Added explicit warning about using Bun exclusively

Author: DevanshuNEU

CONTRIBUTING.md

@@ -17,15 +17,18 @@ pip install -r requirements.txt
 cp .env.example .env
 # Add your API keys to .env
 
-# Set up frontend
+# Set up frontend (MUST use Bun, not npm!)
 cd ../frontend
-npm install
+bun install
 
 # Run tests
 cd ../backend
 pytest tests/ -v
 ```
 
+> **Important:** The frontend uses Bun exclusively. Do NOT use npm or yarn.
+> Install Bun: `curl -fsSL https://bun.sh/install | bash`
+
 ## How to Contribute
 
 ### Reporting Bugs
@@ -65,7 +68,7 @@ pytest tests/ -v
 - Use TypeScript strict mode
 - Prefer functional components
 - Use Tailwind for styling
-- Run: `npm run build` to check for errors
+- Run: `bun run build` to check for errors
 
 ## Testing
 

README.md

@@ -123,9 +123,9 @@ python -m venv venv && source venv/bin/activate
 pip install -r requirements.txt
 python main.py
 
-# Frontend (new terminal)
+# Frontend (new terminal) - MUST use Bun!
 cd frontend
-npm install && npm run dev
+bun install && bun run dev
 ```
 
 </details>