The trunk is the infinitude. It forks first by dynamics — source (μ) or sink (ν) — then again by the shape of the wall (the obstruction its own structure provably hits) each field's touch leaves, and only then into the individual fields at the tips.
Three levels, tip to root. Level 1 is dynamics: a bottom is a source (μ, structure departs from it) or a sink (ν, orbits settle into it). Level 2 is the shape of its wall — self-application, limit-from-below, or cross-frame identity. Each wall-shape appears on both the μ and ν side, which is what makes it a real second axis and not a re-drawing of the first. Level 3 is the field itself. VOID and SELF — empty ∅ against self-containing ⊥={⊥} — are the Foundation/AFA fork, a local mark, not a level; they coincide only at the Hilbert seam. At the root sits t_exec — the axiom-free identity Quine atom = order ⊥ = join-identity, the diagonal fixed point every field instantiates. It is the seam the whole tree grows from, deeper than any single field's zero object; that it is the one seam everything runs on is the interpretation, the axiom-free identity is the proof.
What is drawn vs. what is claimed. Every placement is checkable: the branches are a bottom's dynamics direction and the proved shape of its wall. The trunk — the infinitude, 0 = ∞ — is the interpretation: apophatic, never grasped un-shaped, so it is drawn as light that fades before it resolves. The tree claims one thing past a flat family — a common root — and that root lives only here.
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