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

turbo.json

@@ -0,0 +1,27 @@
+{
+  "$schema": "https://turbo.build/schema.json",
+  "globalDependencies": ["**/.env.*local"],
+  "pipeline": {
+    "build": {
+      "dependsOn": ["^build"],
+      "outputs": ["dist/**", ".next/**", "build/**"]
+    },
+    "dev": {
+      "cache": false,
+      "persistent": true
+    },
+    "test": {
+      "dependsOn": ["build"],
+      "outputs": ["coverage/**"]
+    },
+    "lint": {
+      "outputs": []
+    },
+    "db:migrate": {
+      "cache": false
+    },
+    "db:generate": {
+      "cache": false
+    }
+  }
+}