Use only when the primary unresolved concern is a Rails/Hotwire form workflow: Turbo submission and 422/303 response contracts, validation-error rendering, inline/click-to-edit, modal or multi-step forms, Turbo Frame typeahead, external controls, autosave, pending feedback, or duplicate-submit locking. Do not use merely because a form or search field is present; exclude generic Stimulus behavior, Turbo Drive cache/navigation, Turbo Stream broadcasts or optimistic updates, media, and Hotwire Native bridge work.