feat: add marketplace metrics, privacy features, and service registry endpoints

- Add Prometheus metrics for marketplace API throughput and error rates with new dashboard panels
- Implement confidential transaction models with encryption support and access control
- Add key management system with registration, rotation, and audit logging
- Create services and registry routers for service discovery and management
- Integrate ZK proof generation for privacy-preserving receipts
- Add metrics instru

docs/user-guide/creating-jobs.md

@@ -0,0 +1,49 @@
+---
+title: Creating Jobs
+description: Learn how to create and submit AI jobs
+---
+
+# Creating Jobs
+
+Jobs are the primary way to execute AI workloads on the AITBC platform.
+
+## Job Types
+
+- **AI Inference**: Run pre-trained models
+- **Model Training**: Train new models
+- **Data Processing**: Process datasets
+- **Custom**: Custom computations
+
+## Job Specification
+
+A job specification includes:
+- Model configuration
+- Input/output formats
+- Resource requirements
+- Pricing constraints
+
+## Example
+
+```yaml
+name: "image-classification"
+type: "ai-inference"
+model:
+  type: "python"
+  entrypoint: "model.py"
+```
+
+## Submitting Jobs
+
+Use the CLI or API to submit jobs:
+
+```bash
+aitbc job submit job.yaml
+```
+
+## Monitoring
+
+Track job progress through:
+- CLI commands
+- Web interface
+- API endpoints
+- WebSocket streams