fix linter errors

Author: jhaaaa

bindings/wasm/src/content_types/mod.rs

@@ -13,12 +13,24 @@ use crate::ErrorWrapper;
 /// when surfaced to JavaScript.
 #[derive(Debug, Error, ErrorCode)]
 pub enum ContentTypeError {
+  /// Invalid data.
+  ///
+  /// Content type data failed validation. Not retryable.
   #[error("{0}")]
   InvalidData(String),
+  /// Timestamp out of range.
+  ///
+  /// Timestamp value is outside the representable range. Not retryable.
   #[error("{0}")]
   TimestampOutOfRange(String),
+  /// Codec error.
+  ///
+  /// Content type codec encoding or decoding failed. Not retryable.
   #[error("{0}")]
   Codec(String),
+  /// Crypto error.
+  ///
+  /// Cryptographic operation for content type failed. Not retryable.
   #[error("{0}")]
   Crypto(String),
 }

crates/xmtp_api_d14n/src/config/backend_config.rs

@@ -13,8 +13,14 @@ pub struct ResolvedBackendConfig {
 
 #[derive(Error, Debug, ErrorCode)]
 pub enum BackendConfigError {
+    /// Missing gateway host.
+    ///
+    /// D14n environment requires `gateway_host` to be set. Not retryable.
     #[error("D14n environment '{0:?}' requires gateway_host to be set")]
     MissingGatewayHost(XmtpEnv),
+    /// Auth requires gateway.
+    ///
+    /// Authentication (auth_callback or auth_handle) requires `gateway_host` to be set. Not retryable.
     #[error("Authentication (auth_callback or auth_handle) requires gateway_host to be set")]
     AuthRequiresGateway,
 }