re: the splash's timing is decoded, and the fade-out matches to 0.03 s

Closing the caveat I left last iteration -- the splash timing was +/-0.5s
because I sampled at 2 fps, and at that rate I could not see ramps at
all, only plateaus.

Re-recorded at 10 fps: the splash FADES, both in and out, rather than
cutting. And the bundles declare it. palogo_sqex.t32 carries keyframes
[15 30 235 239 251 255] and palogo_gamearts.t32 [15 30 190 194 206 210],
each with an _eff glow child on [15 30 45]. Under Q1's 1 unit = 1/60 s
that is a 0.25 s ramp in, a 3.42 s or 2.67 s hold, and a 0.33 s fade out
-- against measured holds of about 3.5 s and 2.4 s and fade-outs of about
0.3 s. The constant 0.35 s offset between declared and measured start is
just that my recording's t=0 is when the WINDOW appears, not when the
guest starts drawing.

So the first screen's animation moves from measured to decoded: the port
reads it off the disc instead of trusting my stopwatch.

It also explains something the capture showed and I had no account for.
The brightness overshoots on the way in -- peaks at 0.8 s, settles by
1.1 s -- which reads as a bloom. It is the _eff glow child, whose
keyframes run 15 -> 30 -> 45, ramping in after the logo and back down
while the logo holds. Mechanical, not a rendering artifact.

docs/port/HANDOFF.md

@@ -263,8 +263,15 @@ authored version can be deleted.
   renumbers `--build`. So the first of the five screens does have a reference
   composite. ✅ **And a capture**: both halves edge-correlate to their renders at
   **0.91** and **0.98** at zero shift, each rejected by the other (0.03, −0.03).
-  ✅ **Timed**: `SQUARE ENIX` ≈ 0.5–4.0 s, black, developer logos ≈ 5.0–7.5 s,
-  black, then `ADV.wmv` from ≈ 9.5 s. ⚠️ The cyan `SQUARE ENIX` at ≈ 9.5 s is the
+  ✅ **Its timing is DECODED, not just measured.** The splash **fades both ways**
+  and the bundles carry the keyframes: `SQUARE ENIX` `[15 30 235 239 251 255]`,
+  developer logos `[15 30 190 194 206 210]`, each with an `_eff` glow child on
+  `[15 30 45]`. Under `1 unit = 1/60 s` that is a 0.25 s ramp in, a **3.42 s**
+  / **2.67 s** hold, and a **0.33 s** fade out — and a 10 fps capture measures
+  ≈ 3.5 s / ≈ 2.4 s holds and **≈ 0.3 s** fade-outs. The visible brightness
+  overshoot on the way in is the `_eff` glow ramping after the logo, not a
+  rendering artifact. Wall-clock: logos ≈ 0.4–4.7 s and ≈ 4.9–8.4 s, then
+  `ADV.wmv` from ≈ 8.9 s. ⚠️ The cyan `SQUARE ENIX` at ≈ 9.5 s is the
   **movie's** opening, not a third splash screen.
 * **Sprites carry their own labels.** No font rendering or localisation is needed
   for this milestone. ✅ — and the localisation is *already baked in*: the