- MV-2: guard unsupported element type before parse (no misleading re-wrap); add Float round-trip test
- MV-4: carry ElementDataType through the two validation-flatten ResolvedAttribute sites (ManagementActor.HandleValidateTemplate, BundleImporter.BuildFlattenedConfigForValidation) so MV-5 validation sees element type via every entry point
- MV-12: include ElementDataType in TemplateAttribute add/update audit payloads + fix stale docstring
Joseph Doherty
492b41f0fd