v2: document hardware non-ideality, robustness & calibration

v2: add robustness/calibration demo

v2: add hardware non-ideality/calibration module

Update README.md

Update README.md

Embed forward-transport SVGs in model card with descriptions

Add forward-transport SVG renders + document them

Add Dean Byrne (Quazim0t0) citation

Clarify simulate (physics) vs emulate (the models are bit-exact emulators)

Neural photonic verified units (MZI2, PD) + training/verification process

initial commit