Struct MenuSplit 

pub struct MenuSplit {
    pub n: usize,
    pub orbits: usize,
    pub by_rung: BTreeMap<String, usize>,
    pub distinct_signatures: usize,
    pub largest_morph_class: usize,
}

The lens-menu split + morph clustering. A lean pass (per-orbit certified invariants only — no full router, no group closure — so it reaches n=4): which certified lens-class covers each orbit, and how many distinct structural signatures the orbits collapse to. A signature is (rung, shadow, min-res-width, face-vector) — the structural fingerprint. When distinct_signatures ≪ orbits, the vast orbit count is mostly morphs of a few structural types (the same family, mutated), exactly as one expects: symmetry already quotiented the exact symmetries, and the residual multiplicity is near-symmetric variation.

Fields

n: usize

orbits: usize

by_rung: BTreeMap<String, usize>

Orbit count per certified proof-rung — the fixed lens menu (trivial/counting/parity) vs the growing nullstellensatz-d{degree} dial.

distinct_signatures: usize

Number of distinct (rung, shadow, min-res-width, face-vector) signatures — the structural-type count.

largest_morph_class: usize

Orbits in the single most common signature — the largest morph-class.

Trait Implementations

impl Clone for MenuSplit

fn clone(&self) -> MenuSplit

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MenuSplit

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.