LED Spectrum Tuner for Space Crops — 2D Cross-Section View

This is the 2D companion to the 3D LED spectrum tuner: the same McCree-weighted photosynthesis model, the same four LED channels (red, blue, green, far-red) and the same Daily Light Integral tracking that NASA's Veggie and Advanced Plant Habitat chambers rely on, drawn here as a growing canopy cross-section instead of a rendered 3D chamber. Set the four channel intensities and the photoperiod, and watch the effective photosynthetic flux — weighted by each wavelength's real quantum yield, with an Emerson-effect bonus when red and far-red overlap — drive a row of plants taller and greener over simulated days, while the LED panel bar overhead recolors to match the actual light you're mixing.