re: my phase hypothesis is dead, and the input puzzle is narrower than

this corpus thought

Last iteration I proposed that the boot title is phase 2 and the
attract-returned title is phase 4 state 0, and that only phase 2 wires up
A -- a candidate answer to the oldest open question in
canary-scripted-input-traps.md. I marked it untested and named a test
that needed reading this+132 at runtime.

There was a cheaper one. The decoded graph says B from the main menu is
the edge 4 -> 0, so the B-returned title IS phase 4 state 0. If that
state were the inert one, A would not work there.

A works. Control first -- A on the boot title opened the menu -- then A
on the B-returned title opened it too. So phase 4 state 0 handles A and
the hypothesis is refuted, one iteration after I raised it. Recorded in
REFUTED under my own name, and the conditional stated: the edge is
decoded, but which title it produces is my inference.

The test earned something better than it cost, though. That page frames
the problem as "the boot title accepts A, a later title does not", and
that is too broad -- the B-returned title accepts A perfectly well, a
case nobody had tried. Only the ATTRACT-returned title is inert. Whatever
causes it is tied to the attract cycle specifically rather than to the
title having been shown before, which is a much smaller haystack.

Also reproduced in passing: 4 s after B the plate is absent and fades in
after, the same near-miss this corpus has already been caught by once.

docs/re/REFUTED.md

@@ -35,6 +35,12 @@ neighbourhood, not just the line.
 
 ## Screens, classes and RTTI
 
+* "the boot title is phase 2 and the attract title is phase 4 state 0, and only
+  phase 2 handles Ⓐ" → **mine, and refuted the next iteration.** Ⓑ from the menu
+  is the decoded edge `4 → 0`, and Ⓐ on that returned title opens the menu.
+* "any title after the first one refuses input" → too broad. The **Ⓑ-returned
+  title accepts Ⓐ**; only the **attract**-returned title is inert.
+  [`canary-scripted-input-traps.md`](canary-scripted-input-traps.md)
 * "`sub_821C6458` is `GamePart_Title`'s state machine" → **mine, imprecise.** It
   is the machine for **phase 4** of a five-way outer dispatch at `this+132`;
   phase 0 is the splash. The ten states and eighteen edges are phase 4 only.