Remove duplicate TransportProtocol.Response.newBuilder() call in CreateBitDepthHandler.

Implement BitDepth Management with CRUD Operations

src/main/java/com/mediamanager/service/delegate/handler/bitdepth/CreateBitDepthHandler.java

@@ -41,7 +41,7 @@ public class CreateBitDepthHandler implements ActionHandler {
                     .setPayload(ByteString.copyFromUtf8("Validation error: " + e.getMessage()));
 
         } catch (Exception e) {
-            logger.error("Error creating artist", e);
+            logger.error("Error creating bit-depth", e);
             return TransportProtocol.Response.newBuilder()
                     .setStatusCode(500)
                     .setPayload(ByteString.copyFromUtf8("Error: " + e.getMessage()));

src/main/java/com/mediamanager/service/delegate/handler/bitdepth/UpdateBitDepthHandler.java

@@ -38,7 +38,7 @@ public class UpdateBitDepthHandler implements ActionHandler {
                 logger.warn("BitDepth not found with ID: {}", id);
                 return TransportProtocol.Response.newBuilder()
                         .setStatusCode(404)
-                        .setPayload(ByteString.copyFromUtf8("Artist not found"));
+                        .setPayload(ByteString.copyFromUtf8("BitDepth not found"));
             }
 
             BitDepthMessages.BitDepth bitDepthProto = BitDepthMapper.toProtobuf(bitDepthOpt.get());