FLX-2202: seed-tree input outside its declared domain

Family: plan/replay binding (the 2000 band)

The root of the seed tree is derived from the seam contract digest and an int64 effective seed (KERNEL-SPEC §3). A seed outside the int64 range, a malformed or non-sha256 digest reference, or an empty emit set has no defined derivation, and guessing one would silently produce a run nobody can reproduce.

Look it up offline

$ fluxsim explain FLX-2202

Every code is listed in the error index.