Guard MeshScale mutating endpoints

MeshScale jobs dashboard/backlog scaling and compact farm receipts

Switch MeshScale worker scaling to HF Jobs

Keep MeshScale replica scaling replica-only

Add direct replica input control

Make manual scale zero default and ramp autoscale faster

Remove old MeshScale worker duplicate from defaults

Add replica fallback to existing worker pool

Use Space replicas for MeshScale scaling

Add elastic autoscaler loop

Add MeshScale cost equilibrium dashboard

Build MeshScale bare metal controller