Agent Skills: active-model

Build plain Ruby objects that integrate with Rails forms, validations, serialization, and Action Pack — without a database. Use when building form objects, search forms, API wrappers, configuration objects, virtual models, or any PORO that needs model-like behavior. Triggers on "active model", "form object", "plain Ruby object", "non-database model", "ActiveModel", "PORO", "service object validation", "virtual model", "tableless model", "search form", "ActiveModel::API", "ActiveModel::Model".