🔧 Update Go version in go.mod and enhance build process with versioning information. Modify Makefile and Taskfile to inject build metadata (version, commit, build time) into the binary. Improve README with instructions for custom version builds and document new build info features. Add benchmarks for message parsing and processing to improve performance testing capabilities.

internal/infra/config/config.go

@@ -35,11 +35,32 @@ type NATSConfig struct {
 	Consumer      string              `koanf:"consumer"`
 	StreamLimits  StreamLimitsConfig  `koanf:"stream_limits"`
 	ConsumerRules ConsumerRulesConfig `koanf:"consumer_rules"`
+	Auth          NATSAuthConfig      `koanf:"auth"`
 	// Legacy fields
 	Client  string `koanf:"client"`
 	Cluster string `koanf:"cluster"`
 }
 
+// NATSAuthConfig holds NATS authentication configuration
+type NATSAuthConfig struct {
+	// Token authentication (mutually exclusive with User/Password and CredentialsFile)
+	Token string `koanf:"token"`
+	
+	// Credentials file authentication (mutually exclusive with Token and User/Password)
+	// Path to NATS credentials file (e.g., /path/to/user.creds)
+	CredentialsFile string `koanf:"credentials_file"`
+	
+	// User/Password authentication (mutually exclusive with Token and CredentialsFile)
+	User     string `koanf:"user"`
+	Password string `koanf:"password"`
+	
+	// TLS configuration
+	TLSEnabled bool   `koanf:"tls_enabled"`
+	TLSCertFile string `koanf:"tls_cert_file"` // Client certificate file
+	TLSKeyFile  string `koanf:"tls_key_file"`  // Client private key file
+	TLSCAFile   string `koanf:"tls_ca_file"`   // CA certificate file for server verification
+}
+
 // StreamLimitsConfig defines JetStream retention controls.
 type StreamLimitsConfig struct {
 	MaxMsgs  int64         `koanf:"max_msgs"`
@@ -173,8 +194,9 @@ func LoadConfig() (*Config, error) {
 		return strings.ToLower(strings.ReplaceAll(s, "_", "."))
 	})
 	if err := k.Load(envProvider, nil); err != nil {
-		// Environment variables are optional, so we don't fail if they're not present
-		// This allows the config to work with just the file
+		// Environment variables are optional, so we don't fail if they're not present.
+		// This allows the config to work with just the file.
+		_ = err // explicitly ignore
 	}
 
 	// Unmarshal into Config struct