FLX-2108: the recorded seed-path list is missing or no longer matches the plan

Family: plan/replay binding (the 2000 band)

KERNEL-SPEC section 3: the seed-tree paths a plan anticipated live in seed-paths.ndjson beside plan.json, and the plan carries that file's raw-bytes digest as seedTreeDigest. A missing file, or one whose bytes no longer hash to the recorded digest, means the set of streams the run is allowed to draw from is no longer the set that was planned -- so the FLX-2201 check would be made against the wrong list. Re-run fluxsim plan; the file is rewritten whole from the plan's own execution, never edited.

Look it up offline

$ fluxsim explain FLX-2108

Every code is listed in the error index.