feat(dev): add Makefile with common development commands

20+ commands for streamlined development workflow:

Development:
- make dev: Start dev environment with hot reload
- make prod: Start production-like environment
- make build: Build Docker images
- make stop/clean: Stop and cleanup

Testing:
- make test: Run test suite
- make test-watch: Tests in watch mode
- make coverage: Generate coverage reports

Deployment:
- make deploy-backend: Deploy to Railway
- make deploy-frontend: Deploy to Vercel
- make deploy-all: Deploy everything

Debugging:
- make logs: View all service logs
- make shell-backend/redis: Interactive shells
- make health: Check service status

Quality of life improvements for contributors and maintainers

Author: DevanshuNEU

Makefile

@@ -0,0 +1,135 @@
+.PHONY: help dev prod build test clean deploy
+
+# Default target
+help:
+	@echo "CodeIntel - Development Commands"
+	@echo ""
+	@echo "Local Development:"
+	@echo "  make dev          - Start all services with hot reload"
+	@echo "  make prod         - Start production-like environment"
+	@echo "  make build        - Build Docker images"
+	@echo "  make stop         - Stop all services"
+	@echo "  make clean        - Stop and remove all containers/volumes"
+	@echo "  make logs         - View all logs"
+	@echo ""
+	@echo "Testing:"
+	@echo "  make test         - Run backend tests"
+	@echo "  make test-watch   - Run tests in watch mode"
+	@echo "  make coverage     - Run tests with coverage report"
+	@echo ""
+	@echo "Deployment:"
+	@echo "  make deploy-backend  - Deploy backend to Railway"
+	@echo "  make deploy-frontend - Deploy frontend to Vercel"
+	@echo "  make deploy-all      - Deploy both backend and frontend"
+
+# Development with hot reload
+dev:
+	docker compose -f docker-compose.dev.yml up -d
+	@echo ""
+	@echo "✅ Development environment started!"
+	@echo "   Backend:  http://localhost:8000"
+	@echo "   Docs:     http://localhost:8000/docs"
+	@echo "   Frontend: http://localhost:3000"
+	@echo "   Redis:    localhost:6379"
+	@echo ""
+	@echo "View logs: make logs"
+
+# Production-like environment
+prod:
+	docker compose up -d
+	@echo ""
+	@echo "✅ Production environment started!"
+	@echo "   Backend:  http://localhost:8000"
+	@echo "   Frontend: http://localhost:3000"
+
+# Build images
+build:
+	docker compose build
+
+# Stop services
+stop:
+	docker compose down
+	docker compose -f docker-compose.dev.yml down
+
+# Clean everything (including volumes)
+clean:
+	docker compose down -v
+	docker compose -f docker-compose.dev.yml down -v
+	@echo "✅ Cleaned all containers and volumes"
+
+# View logs
+logs:
+	docker compose logs -f
+
+# Run backend tests
+test:
+	cd backend && python -m pytest tests/ -v
+
+# Run tests in watch mode
+test-watch:
+	cd backend && python -m pytest tests/ -v --looponfail
+
+# Run tests with coverage
+coverage:
+	cd backend && python -m pytest tests/ --cov=. --cov-report=html --cov-report=term
+	@echo ""
+	@echo "Coverage report: backend/htmlcov/index.html"
+
+# Deploy backend to Railway
+deploy-backend:
+	@echo "🚀 Deploying backend to Railway..."
+	railway up
+	@echo "✅ Backend deployed!"
+
+# Deploy frontend to Vercel
+deploy-frontend:
+	@echo "🚀 Deploying frontend to Vercel..."
+	cd frontend && vercel --prod
+	@echo "✅ Frontend deployed!"
+
+# Deploy everything
+deploy-all: deploy-backend deploy-frontend
+	@echo "✅ All services deployed!"
+
+# Quick restart of backend (for dev)
+restart-backend:
+	docker compose restart backend
+	@echo "✅ Backend restarted"
+
+# Quick restart of frontend (for dev)
+restart-frontend:
+	docker compose restart frontend
+	@echo "✅ Frontend restarted"
+
+# Shell into backend container
+shell-backend:
+	docker compose exec backend bash
+
+# Shell into Redis
+shell-redis:
+	docker compose exec redis redis-cli
+
+# View Redis stats
+redis-stats:
+	docker compose exec redis redis-cli INFO
+
+# Check service health
+health:
+	@echo "Checking services..."
+	@curl -s http://localhost:8000/health | python -m json.tool || echo "❌ Backend not responding"
+	@curl -s http://localhost:3000 > /dev/null && echo "✅ Frontend is up" || echo "❌ Frontend not responding"
+	@docker compose exec redis redis-cli ping > /dev/null && echo "✅ Redis is up" || echo "❌ Redis not responding"
+
+# Install dependencies (local dev without Docker)
+install-backend:
+	cd backend && pip install -r requirements.txt
+
+install-frontend:
+	cd frontend && npm install
+
+# Run locally without Docker
+run-backend-local:
+	cd backend && uvicorn main:app --reload --port 8000
+
+run-frontend-local:
+	cd frontend && npm run dev