Set up backend API server with Express and Prisma

- Initialize Node.js/Express backend project structure
- Configure TypeScript for backend development
- Set up Prisma ORM with MySQL database schema
- Implement authentication middleware with Clerk
- Create photo upload endpoint with EXIF extraction
- Build report CRUD endpoints (create, read, delete)
- Add file upload handling with Multer
- Configure CORS and security middleware (helmet)
- Set up error handling and validation
- Create development environment configuration

Task 21 complete: Backend foundation ready for report submissions

server/src/config/database.ts

@@ -0,0 +1,7 @@
+import { PrismaClient } from '@prisma/client';
+
+const prisma = new PrismaClient({
+  log: process.env.NODE_ENV === 'development' ? ['query', 'error', 'warn'] : ['error'],
+});
+
+export default prisma;