重构 JWT 与 Transit 签名流程

go.mod

@@ -5,6 +5,7 @@ go 1.26.0
 require (
 	github.com/go-chi/chi/v5 v5.3.2
 	github.com/go-jose/go-jose/v4 v4.1.5
+	github.com/go-viper/mapstructure/v2 v2.5.0
 	github.com/openbao/openbao/api/v2 v2.7.0
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.71.0
 	go.opentelemetry.io/otel v1.46.0
@@ -20,7 +21,6 @@ require (
 	github.com/felixge/httpsnoop v1.1.0 // indirect
 	github.com/go-logr/logr v1.4.4 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/go-viper/mapstructure/v2 v2.5.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect