feat(core): Standardize S3 storage config using @tsclass/tsclass IS3Descriptor and wire it into RegistryStorage and plugins exports; update README and package dependencies.

ts/plugins.ts

@@ -9,3 +9,8 @@ import * as smartlog from '@push.rocks/smartlog';
 import * as smartpath from '@push.rocks/smartpath';
 
 export { smartbucket, smartlog, smartpath };
+
+// @tsclass scope
+import * as tsclass from '@tsclass/tsclass';
+
+export { tsclass };