feat: backend service

gateway/go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/getkin/kin-openapi v0.135.0
 	github.com/gin-gonic/gin v1.12.0
 	github.com/google/flatbuffers v25.12.19+incompatible
+	github.com/google/uuid v1.6.0
 	github.com/prometheus/client_golang v1.23.2
 	github.com/redis/go-redis/v9 v9.18.0
 	github.com/stretchr/testify v1.11.1
@@ -54,7 +55,6 @@ require (
 	github.com/goccy/go-json v0.10.6 // indirect
 	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/google/cel-go v0.27.0 // indirect
-	github.com/google/uuid v1.6.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect