Move 8 client-thread/tick dispatch methods plus the TICK_ALIGNED
queue verbatim into MacroClientThread. drainTickAligned kept as public
delegate for the mixin caller; run/call variants re-pointed across all
helpers. All bodies verified identical against HEAD modulo mechanical
MacroExecutor./MacroClientThread. qualification.
Move 21 durability-use-next methods plus DurabilityUseNextSession
and DurabilityCandidate verbatim into MacroDurability. Only outside
references are isCurrentRunActive, callOnClientThread and
waitOneTick (already package-visible), qualified as MacroExecutor.xxx
/ MacroDurability.xxx at the 2 staying call sites. All bodies
verified identical against HEAD modulo that qualification.