Add API Documentation Service and enhance existing services with OpenAPI support

services/api-docs/README.md

@@ -0,0 +1,30 @@
+# API Documentation Service
+
+A unified API documentation service that aggregates OpenAPI specifications from all LabFusion services.
+
+## Purpose
+- Provide a single entry point for all API documentation
+- Aggregate OpenAPI specs from all active services
+- Display unified Swagger UI for the entire LabFusion ecosystem
+- Monitor service health and availability
+
+## Technology Stack
+- **Language**: Node.js
+- **Port**: 8083
+- **Dependencies**: Express, Swagger UI, Axios
+
+## Features
+- **Unified Documentation**: Single Swagger UI for all services
+- **Service Health Monitoring**: Real-time status of all services
+- **Dynamic Spec Generation**: Automatically fetches and merges OpenAPI specs
+- **Service Prefixing**: Each service's endpoints are prefixed for clarity
+- **Fallback Handling**: Graceful handling of unavailable services
+
+## API Endpoints
+- `GET /` - Swagger UI interface
+- `GET /openapi.json` - Unified OpenAPI specification
+- `GET /services` - Service health status
+- `GET /health` - Documentation service health
+
+## Development Status
+✅ **Complete** - Ready for use