docs: enhance README with detailed key features and security design

Author: matteogastaldello

README.md

@@ -4,12 +4,17 @@ The **Composition Dynamic Controller (CDC)** is the execution engine of Krateo.
 
 ## Key Features
 
-- **Lifecycle Management**: Orchestrates the deployment, update, and deletion of Helm-based services.
-- **Safety**: Integrates with the Chart Inspector to perform dry-runs and enable precise RBAC auto-provisioning.
-- **Dynamic**: Instantiated by the Core Provider to handle specific `CompositionDefinition` instances.
+- **Lifecycle Orchestration**: Manages the end-to-end deployment, updates, and deletion of services based on Helm charts.
+- **Dynamic Reconciliation**: Automatically reconciles resource states, ensuring the live cluster matches the desired state defined in the `Composition`.
+- **Chart Inspector Integration**: Leverages the Krateo Chart Inspector for secure dry-runs, ensuring chart validity and resource safety before application.
+
+## Security & Operational Design
+
+- **RBAC Enforcement**: Provisions specific, fine-grained RBAC policies for each managed composition, enforcing least-privilege principles at the instance level.
+- **Graceful Lifecycle Management**: Supports advanced management features like service pausing/resuming and controlled Helm release versioning.
+- **Observability**: Built-in support for OpenTelemetry to monitor reconciliation health and performance metrics.
 
 ## Documentation
 
 For detailed guides, architecture diagrams, and full reference, visit the official documentation:
-
 👉 **[https://docs.krateo.io](https://docs.krateo.io/key-concepts/kco/cdc/overview)**