Misc cleanup

src/main/java/ai/nomyo/SecureCompletionClient.java

@@ -295,6 +295,7 @@ public class SecureCompletionClient {
      * @return encrypted bytes (JSON package)
      * @throws SecurityError if encryption fails or keys not loaded
      */
+    @SuppressWarnings("JavadocDeclaration")
     public CompletableFuture<byte[]> encryptPayload(Map<String, Object> payload) {
         return CompletableFuture.supplyAsync(() -> {
             try {