010 layout metadata

// TEST: kernel layout metadata (aspirational)
//
// Goal:
// 1. The kernel view should expose a layout hint (AoS/SoA/Hybrid)
// 2. The compiler should fill this from analysis of the continuation subtree
//
// NOTE: layout is currently stubbed to "aos" until analysis is implemented.
// This test verifies that computed branch receives correct slice length.

~import std/kernel
~import std/io

~std/kernel:shape(Body) {
    x: f64,
    y: f64,
    mass: f64,
}

~std/kernel:init(Body) {
    { x: 0.0, y: 0.0, mass: 1.0 },
    { x: 1.0, y: 0.0, mass: 2.0 },
}
| kernel k |> std/kernel:self { k.mass *= 1.0 }
| computed c |> std/io:print.blk {
        slice len={{ c.len:d }}, mass[0]={{ c[0].mass:f }}
    }