share certificate and share product maker checker

src/app/core/authentication/authentication.service.ts

@@ -420,6 +420,14 @@ export class AuthenticationService {
     return false;
   }
 
+  /** Returns true when the logged-in user has the "Cashier" role. */
+  hasCashierRole(): boolean {
+    const creds = this.getCredentials();
+    if (!creds || !creds.roles) return false;
+    const roleNames: string[] = (creds.roles as any[]).map((r) => (r.name || r.role || '').toLowerCase().trim());
+    return roleNames.some((n) => n === 'cashier');
+  }
+
   /**
    * Sets the user credentials.
    *