The crowd sheet becomes an animation sheet: three frames, and the stand sits back

Oliver: "when clapping I barely see any movement at all now.. also all of the
art could be colored a little more dim as it is perspective wise farther in the
background and should not steal too much attention" — and then, "can't we make
an animation sprite sheet of the new crowd?", which is the answer to the first
half of the first one.

A third roll (_crowdroll.py mid) takes the arms-up frame as its reference and
asks for the same standing people with their hands brought together in front of
their faces. It drifts by 53% of its pixels and that does not matter: the same
filter keeps only what was stand and became person. 100 arm blobs in pose 1, 74
in pose 2, 134 spectators once merged, 28 of them owning BOTH poses — those 28
cycle between two raised poses, which is a clap; the rest alternate with the
seated frame, which is arms going up and down.

The point is the cycle, not the pose. A raiser is ~8x6 logical px on a phone and
one that appears and then holds for a second is not something the eye catches;
arms moving at 3.5 Hz is. Measured: 2-3% of the stand band now changes every
90 ms during a won game, against near zero before.

The sheets are one file per court now — three frames stacked, graded as a single
image so they cannot drift apart in colour — and x_crowd2/_c2/_h2 are deleted.

TUNE.standBack 0.22 dims the crowd and the boards on every court before the
night court's own dim and the splatter rot, in the one function both the cached
backdrop and the live raisers already read.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/config.js

@@ -297,6 +297,11 @@ export const TUNE = {
   // cheered (render's drawClapColumns). Between points the crowd used to be a photograph. This is
   // deliberately slow and single-column: a stand that fidgets constantly is a stand you look AT.
   fidgetEvery: 4.5,
+  // HOW FAR BACK THE STAND SITS. A flat dim over the crowd and the boards, on every court, before
+  // the night court's own `dim` and the splatter rot are added on top. Oliver: "all of the art could
+  // be colored a little more dim as it is perspective wise farther in the background and should not
+  // steal too much attention." The crowd is the only thing on screen that is 30 m away.
+  standBack: 0.22,
   // ---- damage. Bodies with hp (racket boss 'r', brute 'g') take damage in these units, so a big
   // boss is just a bigger hp number and every weapon stays proportional. Fractions are legal: they
   // bank on zb.chip and only whole points come off hp (the wound SKINS switch on hp thresholds).