Initial commit: SDI SaaS Platform foundation

- Complete monorepo structure with pnpm workspaces
- Prisma database schema with 20+ entities
- NestJS API with 9 core modules
- BullMQ orchestration worker
- AWS and Azure provider adapters
- Docker Compose infrastructure
- Complete documentation

QUICKSTART.md

@@ -0,0 +1,99 @@
+# SDI SaaS Platform - Quick Start Guide
+
+## Local Development Setup
+
+### 1. Install Dependencies
+
+```bash
+pnpm install
+```
+
+### 2. Start Infrastructure
+
+```bash
+docker-compose up -d postgres redis
+```
+
+### 3. Configure Environment
+
+```bash
+# Copy environment files
+cp apps/api/.env.example apps/api/.env
+cp apps/worker/.env.example apps/worker/.env
+cp packages/database/.env.example packages/database/.env
+```
+
+### 4. Initialize Database
+
+```bash
+# Generate Prisma client
+pnpm db:generate
+
+# Run migrations
+pnpm db:migrate
+```
+
+### 5. Seed Sample Data (Optional)
+
+Create a seed script to populate initial data:
+
+```bash
+# TODO: Create seed script
+# pnpm db:seed
+```
+
+### 6. Start Development Servers
+
+```bash
+# Terminal 1: API Server
+pnpm --filter @sdi/api dev
+
+# Terminal 2: Worker
+pnpm --filter @sdi/worker dev
+```
+
+### 7. Access Services
+
+- API: http://localhost:3000
+- API Docs: http://localhost:3000/api/docs
+- Database Studio: `pnpm db:studio`
+
+## Testing the API
+
+### Create a Tenant
+
+```bash
+curl -X POST http://localhost:3000/api/v1/tenants \
+  -H "Content-Type: application/json" \
+  -d '{
+    "name": "Acme Corporation",
+    "slug": "acme-corp"
+  }'
+```
+
+### List Providers
+
+```bash
+curl http://localhost:3000/api/v1/providers
+```
+
+### Create a Quote
+
+```bash
+curl -X POST http://localhost:3000/api/v1/quotes \
+  -H "Content-Type: application/json" \
+  -d '{
+    "productOfferingId": "uuid-here",
+    "sourceEndpointId": "uuid-here",
+    "targetEndpointId": "uuid-here",
+    "bandwidthMbps": 1000
+  }'
+```
+
+## Next Steps
+
+1. Implement authentication (JWT/OAuth)
+2. Add seed data for providers and endpoints
+3. Build customer portal (Vue 3)
+4. Complete AWS/Azure adapter implementations
+5. Add real-time updates via SSE