This tag marks the proven, simple compute-dispatch model: one persistent
GCE host (cr-host-build), watchdog idle-stop exempt, dispatching deep
scans directly via gcloud compute ssh, capped at MAX_CONCURRENT=2
simultaneous detonations (app/api/deep/route.ts).

This is a git-revert of commit 33536f1 (the golden-image + MIG standby
pool experiment), restored because real measured pool activation times
(21-88s to wake a host from stopped/suspended) did not meet the actual
requirement of an always-warm host with near-instant per-scan microVM
spin-up.

If a future change needs to be undone, `git revert <bad-commit>` back to
this tag's tree (or `git checkout single-host-dispatch-known-good -- app/api/deep/route.ts sandbox/microvm/`)
is the real, algorithmic way back -- not a manual reconstruction.