Add horizontal delimiters between sections

Taller generative render to match its taller controls column

Drop upload; organelle-first; equal-height panels; ODE-step slider replaces GIF; titles with colon

Tighter plots: constrained layout, fix cropped suptitle, less whitespace

Fix: gr.Plot has no height kwarg; size via figsize instead

Taller renders, theme-matched plot backgrounds; section 2 title + drop PCC table

Upload mode: hide organelle dropdown, add read-only Uploaded data field

Data section editorial: plain numbered headers, drop slider hint, Upload Data button

Restructure UI: 3 sections (data/regression/generative), per-section T/Z, per-step PCC

ZeroGPU-adapted DynaCell demo, repointed to biohub repos