CBF: Queue → GR (1-PN)

Build:
α(r), ψ(r) are produced by accumulated queues bt, bs. Photon bending uses n(r)=ψ/α. Orbit panel is a GR 1-PN reference. Curvature self-calibrates each run.
Shared
Queues → α,ψ
plot (1−α)×k and (ψ−1)×k
Orbit (1-PN reference)
Photon (Queue-driven Fermat)
plot (y−b)×k to visualize tiny bends
debug: swap queue n with exact isotropic n
Tip: press R to run, 0 to reset.
Exact isotropic reference: μ = GM/(2rc²), αexact=(1−μ)/(1+μ), ψexact=(1+μ)². Queues: integrate b′ = S(r) − κ b inward from rmax; map α=(1−½bt)/(1+½bt), ψ=(1+½bs)²; Fermat uses n=ψ/α.
orbit check
Ray bending Line integral
α,ψ match