diff --git a/CLAUDE.md b/CLAUDE.md
index 9816ea6..f4e2ddc 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -18,9 +18,13 @@ npm install
 cd apps/backend && npm install
 cd ../frontend && npm install
 
-# Start infrastructure (PostgreSQL + Redis)
+# Start infrastructure (PostgreSQL + Redis + MinIO)
 docker-compose up -d
 
+# Verify all services are running
+docker-compose ps
+# Expected: xpeditis-postgres, xpeditis-redis, xpeditis-minio
+
 # Run database migrations
 cd apps/backend
 npm run migration:run
@@ -38,6 +42,7 @@ cd apps/frontend && npm run dev
 - Frontend: http://localhost:3000
 - Backend API: http://localhost:4000
 - API Docs (Swagger): http://localhost:4000/api/docs
+- MinIO Console (local S3): http://localhost:9001 (minioadmin/minioadmin)
 
 ### Monorepo Scripts (from root)
 
@@ -238,6 +243,8 @@ apps/frontend/
 - `@/app/*` - Maps to `./app/*`
 - `@/types/*` - Maps to `./src/types/*`
 - `@/hooks/*` - Maps to `./src/hooks/*`
+- `@/utils/*` - Maps to `./src/utils/*`
+- `@/pages/*` - Maps to `./src/pages/*`
 
 ### Tech Stack
 
@@ -270,6 +277,7 @@ apps/frontend/
 - AWS RDS (PostgreSQL)
 - AWS ElastiCache (Redis)
 - AWS S3 (document storage)
+- MinIO (local S3-compatible storage for development)
 
 ## Testing Strategy
 
@@ -333,7 +341,8 @@ See [.github/workflows/ci.yml](.github/workflows/ci.yml) for full pipeline.
 - Sentry error tracking + APM (10% trace sampling)
 - Performance monitoring interceptor (slow request alerts)
 - Structured JSON logging with Pino
-- WebSocket real-time carrier status updates
+- WebSocket real-time notifications (NotificationsGateway)
+- WebSocket carrier status updates
 
 ## Database Schema
 
@@ -347,6 +356,10 @@ See [.github/workflows/ci.yml](.github/workflows/ci.yml) for full pipeline.
 - `containers` - Container details (type, VGM, seal numbers)
 - `shipments` - Real-time shipment tracking
 - `audit_logs` - Compliance audit trail
+- `csv_rates` - CSV-based rate data for offline/bulk rate loading
+- `csv_bookings` - CSV-based booking imports
+- `notifications` - User notifications (email, in-app)
+- `webhooks` - Webhook configurations for external integrations
 
 **Migrations**: Located in `apps/backend/src/infrastructure/persistence/typeorm/migrations/`
 
@@ -393,7 +406,11 @@ See `apps/backend/.env.example` and `apps/frontend/.env.example` for all availab
 - `GET /api/v1/bookings` - List bookings (paginated)
 - `GET /api/v1/bookings/:id` - Get booking details
 - `GET /api/v1/carriers/:id/status` - Real-time carrier status
-- `WS /carrier-status` - WebSocket for real-time updates
+- `POST /api/v1/rates/csv-search` - Search rates from CSV data
+- `POST /api/v1/bookings/csv-import` - Bulk import bookings from CSV
+- `GET /api/v1/notifications` - Get user notifications
+- `WS /notifications` - WebSocket for real-time notifications
+- `WS /carrier-status` - WebSocket for carrier status updates
 
 ## Business Rules
 
@@ -413,6 +430,50 @@ See `apps/backend/.env.example` and `apps/frontend/.env.example` for all availab
 - `USER` - Create and view own bookings
 - `VIEWER` - Read-only access
 
+## Real-Time Features (WebSocket)
+
+The platform uses WebSocket connections for real-time updates:
+
+**Notifications Gateway** (`application/gateways/notifications.gateway.ts`):
+- Real-time user notifications (booking updates, system alerts)
+- JWT-authenticated WebSocket connections
+- Auto-reconnect with exponential backoff
+- Connect to `ws://localhost:4000/notifications`
+
+**Carrier Status Updates**:
+- Real-time carrier API status monitoring
+- Live shipment tracking updates
+- Connection status: online/offline/degraded
+- Connect to `ws://localhost:4000/carrier-status`
+
+**Frontend Integration**:
+- Socket.IO client for WebSocket connections
+- Context providers in `lib/providers/`
+- Real-time notification dropdown component
+- Auto-refresh on status changes
+
+## CSV Import/Export Features
+
+The platform supports CSV-based operations for bulk data management:
+
+**CSV Rate Search**:
+- Upload CSV files with rate data for offline/bulk rate loading
+- CSV-based carrier connectors in `infrastructure/carriers/csv-loader/`
+- Stored in `csv_rates` table
+- Accessible via admin dashboard at `/admin/csv-rates`
+
+**CSV Booking Import**:
+- Bulk import bookings from CSV files
+- Validation and mapping to domain entities
+- Stored in `csv_bookings` table
+- CSV parsing with `csv-parse` library
+
+**Export Features**:
+- Export bookings to Excel (`.xlsx`) using `exceljs`
+- Export to CSV format
+- Export to PDF documents using `pdfkit`
+- File downloads using `file-saver` on frontend
+
 ## Common Development Tasks
 
 ### Adding a New Domain Entity
diff --git a/apps/backend/package.json b/apps/backend/package.json
index 6051eb7..e2c5fb8 100644
--- a/apps/backend/package.json
+++ b/apps/backend/package.json
@@ -4,7 +4,7 @@
   "description": "Xpeditis Backend API - Maritime Freight Booking Platform",
   "private": true,
   "scripts": {
-    "build": "nest build",
+    "build": "nest build && tsc-alias -p tsconfig.build.json",
     "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
     "start": "nest start",
     "dev": "nest start --watch",
diff --git a/apps/backend/tsconfig.build.json b/apps/backend/tsconfig.build.json
new file mode 100644
index 0000000..1d7acd8
--- /dev/null
+++ b/apps/backend/tsconfig.build.json
@@ -0,0 +1,4 @@
+{
+  "extends": "./tsconfig.json",
+  "exclude": ["node_modules", "test", "dist", "**/*spec.ts"]
+}