feat: Full petmaster CRM with NestJS API and React frontend

- Client management (CRUD with JSONB custom fields)
- Pet profiles
- Service catalog with per-client pricing
- Booking calendar with recurring appointments
- Invoicing with Stripe integration
- Real-time messaging (WebSocket)
- Self-booking portal
- Staff assignment
- Docker multi-stage builds
- Prisma schema + seed

api/prisma/seed.ts

@@ -0,0 +1,32 @@
+import { PrismaClient } from '@prisma/client';
+
+const prisma = new PrismaClient();
+
+async function main() {
+  // Create default services
+  const services = [
+    { name: 'Full Groom', description: 'Complete bath, haircut, nail trim', duration: 90, basePrice: 75 },
+    { name: 'Bath & Brush', description: 'Thorough bath with brushing', duration: 45, basePrice: 45 },
+    { name: 'Nail Trim', description: 'Quick nail clipping', duration: 15, basePrice: 15 },
+    { name: 'Dog Walking', description: '30 minute supervised walk', duration: 30, basePrice: 25 },
+    { name: 'Boarding (Standard)', description: 'Overnight boarding with feeding', duration: 1440, basePrice: 55 },
+    { name: 'Drop-in Visit', description: '20 min play/walk visit', duration: 20, basePrice: 30 },
+  ];
+
+  for (const svc of services) {
+    await prisma.service.upsert({
+      where: { name: svc.name },
+      update: svc,
+      create: svc,
+    });
+  }
+
+  console.log('Seed completed: default services created');
+}
+
+main().catch((e) => {
+  console.error(e);
+  process.exit(1);
+}).finally(async () => {
+  await prisma.$disconnect();
+});