Static MMQ_SK_FORCE 

pub static MMQ_SK_FORCE: AtomicI8

Per-model stream-k entry override for SPEC serving (-1 = unset → env/default; 0 = force tiling; 1 = admit the deterministic form selector). The former timing selector made identical boots choose different fold orders; MEMRA_MMQ_SK_FORM is the explicit numerical-form seam. mmq_ffi reads this before the env.