Description

Add JWT token validation middleware to secure HealthChain API endpoints. Support OIDC-compliant providers (Keycloak, Auth0, Okta, etc.) with Keycloak as reference implementation. Enables HealthChain Gateway to act as authorization server for client applications accessing health data.

• JWT validation middleware for FastAPI
• OIDC provider configuration (JWKS, token introspection)
• Keycloak integration example
• Basic RBAC with role decorators
• Documentation and cookbook example