Name the frames cut from a picture in the shader binding rule

- Architecture: TextureLibrary asks the bind group of the picture
  and of every frame cut from it, as a sprite wearing pixel art
  names a cut.
- Development: 1741 editor checks.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Architecture.md

@@ -186,7 +186,8 @@ src/viewport/          WorldViewport (the drawing of a world or a holder, the ba
                        still names it, right after the redraw that asked or on a later ask, #293: the mesh of an
                        object with a shader asset keeps its picture bound until it syncs, and a source destroyed
                        under it made Pixi warn "destroyed while still bound to a shader" with every change to the
-                       drawing; `TextureLibrary` tells by the bind group listening for `change` on the source; who
+                       drawing; `TextureLibrary` tells by the bind group listening for `change` on the source,
+                       of the picture or of any frame cut from it, as a sprite wearing pixel art names a cut; who
                        draws which asset type, and the factory that looks an asset up in the open project) — no
                        GPU, so it is measured without a browser,
                        vectorArtPicture (the rasteriser of #129: the draw commands of

Development.md

@@ -18,7 +18,7 @@ php tests/php/accounts.test.php                               # the API's accoun
                                                               #   has and the web server's container has not (SKIP there)
 php tests/php/snapshots.test.php                              # the snapshot store (#231), the same way
 php tests/php/releases.test.php                               # the release store (#266), the same way
-node tools/seed-e2e.mjs && node tools/e2e.mjs                 # 1740 editor checks, screenshots in /tmp/gm-e2e-*.png
+node tools/seed-e2e.mjs && node tools/e2e.mjs                 # 1741 editor checks, screenshots in /tmp/gm-e2e-*.png
 GM_STEPS=20 node tools/e2e.mjs                                # or 1-12, or 6,20 — a subset while working on one step
 ./e2e.sh start [GM_STEPS]                                     # the same run detached, see below
 ./e2e.sh status                                               # live progress, or the last run's result