One scene, wide: songs against seeds

Six thumbnails is enough to rank sixty-eight scenes and far too few to study
one. Worse, six songs at one seed each confounds the two inputs: a scene whose
frames are interchangeable might be ignoring the identity or ignoring the music,
and the library gallery cannot say which.

So a scene's name in the gallery now opens it on a grid — songs down, seeds
across, up to every song in the bank by ten draws. Buttons pick the size and
walk onto a fresh block of seeds, which is a much better answer to "is it flat
or was that ten unlucky rolls" than staring at the same ten. The state lives in
the URL, so every button is also a back button.

Three scores rather than one, and the two new ones are the diagnosis: ACROSS
SEEDS is the same song with a different draw, so low means the scene ignores the
identity; ACROSS SONGS is the same draw against different music, so low means it
ignores the song. They point at different fixes. The closest pair is outlined,
because at 170 cells no eye is finding it.

The first version hashed the song name into the seed so a column would not be
one roll repeated down the grid. It reads better and measures nothing: with the
seed varying on both axes the two scores are the same comparison, and they came
back within 0.001 of each other for every scene tried. A column holds its seed
fixed now, which is what makes it attributable to the music — and the scores
separate, with the seed moving every scene tried more than the song does.

170 cells in 9s. The songs are the slow part and are analysed one at a time so
the count moves, then cached for the session.

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

flow-state/debug.html

@@ -53,6 +53,19 @@
             <div class="meta">~3 min · the one to open when a scene feels familiar ·
                 <code>HOWTO-variety.md</code> for how to fix what it finds</div>
         </div>
+        <div class="card fast">
+            <h3><a href="/gallery.html?scene=Effigy&amp;songs=6&amp;seeds=6">one scene, wide</a></h3>
+            <p>The gallery for a single visualizer, on a grid of songs (rows) against
+               seeds (columns) — up to every song in the bank by ten draws. Six
+               thumbnails ranks a library; it is far too few to study one scene.
+               Scores the two axes separately, which is the thing the library
+               gallery cannot tell you: <strong>across seeds</strong> low means the
+               scene ignores the identity, <strong>across songs</strong> low means it
+               ignores the music. The closest pair in the grid is outlined.</p>
+            <div class="meta">seconds, after the songs are analysed once ·
+                click any scene name in the gallery to open it here ·
+                the buttons change grid size and walk onto fresh seeds</div>
+        </div>
         <div class="card">
             <h3><a href="/filmstrip.html">filmstrip</a></h3>
             <p>Every song in the bank, one frame every 30 seconds, left to right.