The 'mysterious flag pair' gating every master-only registration was never
BT-specific state waiting on unreconstructed stream builders. It is the
Entity base itself: InstanceBits=2 puts the instance field at mask 0xC
(ReplicantInstance=4), DynamicBit=8 makes DynamicFlag 0x100 -- so the
binary's (flags & 0xC)==0 && (flags & 0x100)!=0 reads 'a master-instance
dynamic entity', spelled MasterInstance + DynamicFlag in the 1995 headers.
Mover::DefaultFlags = DynamicFlag|MasterInstance, ENTITY.CPP:978 seeds
simulationFlags from the MakeMessage's instanceFlags, and our spawn recipe
has passed Mech::DefaultFlags since the boot ladder -- the authentic gate
was live all along. The BT411 donor's 'MasterHeatSinkFlag' name was a
fabrication that made an engine constant look like a missing subsystem
feature (donor drift #12).
Eleven sites flip from the GetInstance() mirror to the binary pair: the
heat-family registrations (x4), powersub (x3), gyro, hud, myomers,
emitter, and the Torso ctor's master/copy selection (@004b6b0c verbatim,
isDamagedCopy set in both branches). The MECHWEAP score-post and MECH view
gates are different families and stay as they are.
Statically proven (DefaultFlags carries both bits) and mission-soaked
clean. No [T2] divergence markers remain in the tree.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
CydandClaude Fable 5
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