- Remote name field with zod validation (mode: onSubmit, reValidateMode: onChange)
- Three backend cards in popularity order: Azure Blob, Amazon S3, S3-Compatible
- Card click validates name first; dispatches SET_REMOTE_NAME + SET_BACKEND_TYPE + SET_REMOTE_PARAMS({}) + SET_STEP(1)
- Does NOT dispatch RESET — preserves deployment options
- All 10 BackendSelectionStep tests GREEN