Minimum number of warm-pool VMs to keep running from this template at all times, so builds start without waiting for a clone and boot. 0 = no warm pool (provision strictly on demand).

The cloud provisions up to this many instances even with no queued work (at startup, on config save, and after any drop), bounded by the Instance Cap (the minimum cannot exceed the cap). Idle agents above the minimum are still reaped by idle termination, but the minimum itself is never idle-reaped. Max Total Uses still applies: a used-up warm agent is recycled and a replacement is provisioned to restore the count, so warm agents do not run forever.