Interactive /learn page rebuilt on the real NISPS engine (nisps.wasm):
- Stacked 3D landscapes = MLP output channels sampled over the 2D input grid
(the N-dimensional 'sandwich'); orbitable yaw/pitch camera, top-down = flat 2D.
- Three zones L→R: XY control (with +/- feedback markers) → MLP stack → output faders.
- Real training: push-away (feedback_down) + explore-and-place (enter/reroll/nudge/
commit), undo, randomise, nudge; landscapes re-sample and morph after each verdict.
- Params numberbox (1..8); new layers grow downward with the top slab pinned.
- Minimal-by-default with a discrete info switch revealing placeholder copy.
Standalone no-build page; loads ../nisps.{js,wasm}; deployed at /next/learn/.
