Add documentation and comments about encapsulated error messages.

README.md

@@ -22,6 +22,9 @@ Rust and python packages can be built using this repo. We support development an
 
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+## Encapsulated error messages
+In addition to the encapsulated response from confidential whisper model, the error messages will also be declassified to enhance confidentiality. 
+
 ## Python package
 
 Build the pyohttp package as follows. 

ohttp-client-cli/src/main.rs

@@ -97,6 +97,7 @@ async fn main() -> Res<()> {
             println!("{chunk}");
         }
     } else {
+        // Decapsulated error message.
         println!("Request failed with status {status}");
         error!("{}", response.text().await?);
     }