refactor(store): sqlc override uuid→google/uuid.UUID (убирает pgtype boilerplate)

sqlc.yaml

@@ -17,3 +17,13 @@ sql:
               package: dto
               type: TemplateDoc
               pointer: true
+          - db_type: "uuid"
+            go_type:
+              import: "github.com/google/uuid"
+              type: "UUID"
+          - db_type: "uuid"
+            nullable: true
+            go_type:
+              import: "github.com/google/uuid"
+              type: "UUID"
+              pointer: true