refactor: separate backend domains and storage adapters

internal/data/organization.go

@@ -0,0 +1,7 @@
+package data
+
+import "kra/internal/biz"
+
+type organizationRepo struct{ data *Data }
+
+func NewOrganizationRepo(data *Data) biz.OrganizationRepo { return &organizationRepo{data: data} }