Warmup requests and speculative prewarm targets dropped modal_max_containers,
so they computed a different runtime fingerprint than the dispatch payload for
the same app name. The warmup then stopped and redeployed the app the dispatch
had just deployed, killing in-flight mapped generations with RemoteError.
Carry modal_max_containers into derived warmup payloads, and refuse to stop an
app whose fingerprint this process already deployed or validated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
