* refactor(tools): remove expired bfl_flux3_* promo tools; FLUX 3 rides the video_gen provider surface * test: relay-cutover migration asserts >= v38, not the version literal
* refactor(tools): remove expired bfl_flux3_* promo tools; FLUX 3 rides the video_gen provider surface * test: relay-cutover migration asserts >= v38, not the version literal