Feat/quasioptical photon offload#317
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…sses New standalone example demonstrating optical-photon offload via the G4 11.4 G4QuasiCerenkov / G4QuasiScintillation processes. Mirrors the structure of examples/async_gpu_std: standalone CMakeLists with find_package(eic-opticks), bare includes, manual argv parsing, glm find_package workaround for the eic-opticksConfig.cmake gap. Quasi process registration uses an inline QuasiOpticalPhysics constructor because G4OpticalPhysics::ConstructProcess in v11.4.1 does not auto-instantiate the Quasi variants based on G4OpticalParameters offload flags. The constructor activates after G4OpticalPhysics has run, with the legacy Cerenkov / Scintillation processes disabled via SetProcessActivation(false). The SteppingAction matches both "QuasiScintillation" and the upstream typo "QausiScintillation" for forward compatibility. Bit-identical output to the legacy GPURaytrace example when both run with stackPhotons=false (verified at 100-event and 50M-photon scales). No modifications to eic-opticks core source.
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Adds
examples/GPURaytraceQuasi/, a standalone consumer example that mirrorssrc/GPURaytracebut uses the new Geant4 11.4 native optical-photon offload classes (G4QuasiOpticalPhoton,G4QuasiCerenkov,G4QuasiScintillation) together withG4OpticalParameters::Set{Cerenkov,Scint}{Offload,Stack}Photons(...).This is purely additive — no modifications to any core source under
CSG/,CSGOptiX/,qudarap/,sysrap/,u4/,g4cx/,dd4hepplugins/, or any other tracked file in the repo. All changes live underexamples/GPURaytraceQuasi/.