feat: enhance GenericVerifiableCredential interface with explicit optional properties

- Add name, description, and agent as optional properties to GenericVerifiableCredential
- Improve type safety and IntelliSense for common claim properties
- Maintain backward compatibility with existing code
- Reduce need for type assertions when accessing claim properties

src/libs/partnerServer.ts

@@ -4,6 +4,6 @@ export interface UserProfile {
   locLon?: number;
   locLat2?: number;
   locLon2?: number;
-  issuerDid: string;
+  issuerDid?: string;
   rowId?: string; // set on profile retrieved from server
 }