package usecase import "context" type PresetSummary struct { ID string PersonaID string Name string Tone string CTA []string BannedWords []string Notes string CreateAt int64 UpdateAt int64 } type UpsertRequest struct { TenantID string OwnerUID string PersonaID string PresetID string Name string Tone string CTA []string BannedWords []string Notes string Apply bool } type UseCase interface { List(ctx context.Context, tenantID, ownerUID, personaID string) ([]PresetSummary, error) Upsert(ctx context.Context, req UpsertRequest) (*PresetSummary, error) Delete(ctx context.Context, tenantID, ownerUID, personaID, presetID string) error }