Hybrid mapped execution rebuilt its static, mapped, and cleanup phase payloads
from a fixed field list that dropped modal_gpu and modal_max_containers. Those
payloads resolved default settings and expected a different runtime fingerprint
for the same Modal app, so the sibling-validation guard refused them with
ModalRemoteAppOutOfDateError.
Define the fingerprint-shaping payload fields once in settings and copy them at
every derived-payload site (mapped phases, warmup requests, speculative
prewarm targets).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
