[Test] (tools/trace_replay): pin the Iris glyph-death bug with a BSL pause-menu fixture

minecraft-1.21.4-fabric-iris-bsl-esc-menu-854: Minecraft 1.21.4 Fabric +
Sodium + Iris + BSL 10.1.3 through Espryt on Mali-G77, paused at the ESC
menu over the BSL-blurred world, captured at 854x480 through the FCL
trace-capture skill. The trimmed trace keeps the whole session preamble
deliberately: the 107669b3 bug class is triggered while Iris BUILDS the
pipeline (a by-name texture call swapping the active unit's binding under
the sync memo), and the pause menu afterwards is where its damage is
legible - every glyph alpha-discards against the zeroed lightmap while
the button frames survive.

Ablation-proven as a net before landing: against a build with both layers
of 107669b3 reverted the case fails at ssim 0.949284 and the diff image
is text and only text - menu title, all button labels, the tutorial
toast; against the fixed library it matches the golden exactly, and
Magma passes the same golden at 0.998402 with no alternate needed.
Replays in about a minute per backend on llvmpipe/lavapipe (the 1.3M-call
preamble; well under the timeout and smaller than several existing
fixtures). Existing fixtures spot-checked green.

tools/trace_replay/README.md

@@ -63,6 +63,12 @@ The bundled fixtures cover:
 - minecraft-1.21.4-fabric-iris-bsl-in-world: captured from Minecraft 1.21.4 Fabric with Sodium, Iris, and BSL
   Shaders after entering a singleplayer world.
   ![Minecraft 1.21.4 Fabric Iris BSL in-world golden](fixtures/minecraft-1.21.4-fabric-iris-bsl-in-world.0000110725.png)
+- minecraft-1.21.4-fabric-iris-bsl-esc-menu-854: captured on an Android device (Mali-G77, FCL MobileGL capture) from
+  Minecraft 1.21.4 Fabric with Sodium, Iris, and BSL Shaders, at the pause menu over a BSL-blurred world. The frame
+  pins glyph rendering: every menu label, the menu title and the tutorial toast must be present. Regressions in the
+  DirectGLES per-draw texture memo have made the whole text path disappear here while sprites kept rendering, so a
+  failure that leaves the buttons but empties them is the signature to look for in the diff.
+  ![Minecraft 1.21.4 Fabric Iris BSL ESC menu 854x480 golden](fixtures/minecraft-1.21.4-fabric-iris-bsl-esc-menu-854.0001303534.png)
 - minecraft-1.21.4-fabric-iris-makeup-ultrafast-in-world: captured from Minecraft 1.21.4 Fabric with Sodium, Iris, and
   MakeUP UltraFast after entering a singleplayer world.
   ![Minecraft 1.21.4 Fabric Iris MakeUP UltraFast in-world golden](fixtures/minecraft-1.21.4-fabric-iris-makeup-ultrafast-in-world.0000095322.png)

tools/trace_replay/trace_cases.json

@@ -289,6 +289,12 @@
       "golden": "minecraft-1.21.4-fabric-iris-iterationrp-in-world.0000202020.png",
       "target_call": 202020,
       "timeout_seconds": 1800
+    },
+    {
+      "name": "minecraft-1.21.4-fabric-iris-bsl-esc-menu-854",
+      "trace_archive": "minecraft-1.21.4-fabric-iris-bsl-esc-menu-854.tgz",
+      "golden": "minecraft-1.21.4-fabric-iris-bsl-esc-menu-854.0001303534.png",
+      "target_call": 1303534
     }
   ]
 }