# Pre-registration — widening F5's 5-frame artwork window

Committed **before** the capture is read. F5 concluded Ⓐ forces the plate and
leaves the artwork's timeline alone, but the artwork half rested on **5 frames**
(446–450 in `f5`): the only stretch where the press had landed and something was
still animating. Everything else was at α255 and could not discriminate.

**This run presses Ⓐ at the sweep's gate instead** — `PRESS2_FRAMES=3` rather
than 40 — so the press lands at title `t≈70` with ~40 frames of artwork
animation still ahead of it, an 8× wider window.

## The prediction

Comparing `f5-early` against the no-press control `f6b`, **aligned by the sweep's
position**, over the four quads that are still ramping:
`8ECA:-1.00`, `8ECA:-0.90`, `EAC3:-0.82`, `8154:-0.74`.

| if Ⓐ … | those four |
|---|---|
| **only forces the plate** (F5's claim) | continue **identically** to the control for the full ~40 frames |
| advances a shared clock | terminate early, jump, or change step |

**A pass is the boring outcome and I have said so first.** The failure mode this
guards against is that F5's artwork claim was read off a window too short to show
a divergence that a longer one would reveal.

## What it still will not cover

The plate's identity, the 1.7× clock conflict, and whether Ⓐ drives some third
clock — a cut is consistent with several mechanisms.