Track B — The ECH Note

Lead result

The derived axial spin-spin contact term is identified with Popławski's torsion-bounce repulsion mechanism — the positive result. The same algebraic elimination that produces it closes four candidate dark-energy routes — the negative result, stated in the same Note rather than hedged around.

derived

Channels & tests

Channel	Prediction	Current data	Evidence	Receipt
Torsion-bounce repulsion mechanism	Minimal ECH's axial spin-spin contact term matches Popławski's bounce mechanism.	Derived and identified; consistent with the mechanism as stated.	derived	paper-1n source
Minimal-ECH dark-energy routes (4 candidates)	A viable dark-energy mechanism survives the same elimination.	All four candidate routes close under the algebra — none survives.	null	paper-1n source
Chiral gravitational waves (LISA band)	A parity-odd O(h²) operator from minimal ECH + Dirac/Weyssenhoff matter.	No such operator exists in this setup; Δ_h is structurally k-odd, ≤6e−13 at LISA — ledger #7 closed negative.	null	chiral_gw_gate

Works in this track

What Minimal Einstein–Cartan–Holst Torsion Does for the Bounce and Cannot Do for Dark EnergyOne closed-line Note: spin-torsion gravity's contact repulsion powers a bounce mechanism, but not dark energyv1N.0.5 · 95%

What is still open

First INT/EXT review board on the merged NoteP1N has not yet been through any review board; P1A + P1C review churn stopped after R13 as separate manuscripts.

Houston's final sign-off readReadiness 95 (v1N.0.5) pending Houston's personal review quote in SSOT/paper-1n/status.md.

Boundary

This is a closed theory line, not a dark-energy model or a cosmological detection. It states plainly what minimal ECH torsion can and cannot explain, and does not extend the contact-term result beyond the stated minimal assumptions.