5.12.0

Added

• A native->native load while a PiP window is active now hands the AVPlayerItem over in place, so system PiP survives next-episode transitions. The load teardown dropped the running item to nil for the whole load gap (probe, demuxer, fresh loopback session), and the system closes a PiP window whose source layer's player loses its item; the #93 in-PiP recovery reload had already established the same failure mode and the inPlaceSwap fix for it. load() now computes shouldHandOverItemInPlace(pipActive:priorBackendWasNative:), stopInternal defers the item detach (keepCurrentItem), and the loopback host.load callsite consumes the armed handover as inPlaceSwap: the old item keeps playing until replaceCurrentItem swaps in the ready master, transport intent latched. Audio-switch and recovery reloads keep their existing contracts. Covered by PiPItemHandoverTests. (#158)