message: remove ClientError::IdError error variant: everything's type-safe now
diff: @@ -81,9 +81,6 @@ pub enum ClientError {
  #[error("cache file error: {0}")]
  CacheFile(String),
  -
  - #[error("id parse error: {0:?}")]
  - InvalidId(#[from] IdError),
  }
  pub type ClientResult<T> = Result<T, ClientError>;
  