re: the skewed draw is not the swoosh -- refuting the identification five

iterations of work were built on

I flagged last iteration that "draw 2 is the swoosh" was an inference I
had never checked. Checking it took one line, and it is wrong.

Converting the quads from NDC to screen space: quad A spans y -209 to
925, quad B spans y -292 to 1012. Both cover the full screen height and
run well off it. The swoosh, ptlogo_back2, rests at (71,126) and is a
234-pixel band at y 126 to 360. Draw 2 is not it.

A candidate offered as one: the two ptloop sweeps. pteff03a is 399x180
with element scale (100,800), so 399x1440, and pteff03 carries (100,600)
-- two long thin sprites, two quads, and the drawn vertex alphas 0xC3 and
0xB6 sit inside the 0x80 to 0xff ramp those records declare. Not
confirmed; no texture or position match was made.

If that is right it matters, and I have written it conditionally rather
than acting on it: our renderer parks those sweeps at their final
keyframe, both off screen, and draws nothing, while the game draws them
across the screen. That would mean the capture caught them mid-sweep
inside their t=150 to 600 window, and that the "groups hold" reading
needs re-examining for those two elements.

What this cost is worth stating plainly. Five iterations -- the additive
blend test, the pivot analysis, the vertex-colour capture -- were built
on an identification made by elimination on one screen and never checked
against the draw's own coordinates. The eliminations themselves stand,
because each was measured against the capture rather than against the
identification. The chain that pointed them at ptlogo_back2 did not.
METHOD takes the general form.

docs/re/METHOD.md

@@ -310,3 +310,10 @@ agent's loop prompt, i.e. nowhere durable. See [`README.md`](README.md) for the
   next route "because it reads the blend state". It does not — checking the
   capture's own source showed it records textures and vertex attributes and no
   blend registers. A named next step is a claim like any other.
+* **Name the element from the draw's own coordinates before building on it.** A
+  skewed draw in a title capture was called "the swoosh" because the swoosh is the
+  screen's only diagonal element — an identification by elimination, never checked
+  against the draw's NDC extent. It was wrong: the quads span the full screen and
+  beyond, the swoosh is a 234-pixel band. Five iterations of analysis pointed at
+  the wrong element on the strength of it. Converting the coordinates takes one
+  line and should come first.