diff --git a/.gitignore b/.gitignore
index d3e69bb..0b1cf5b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -42,3 +42,6 @@ harness/mame/gui.log
 # trivially re-obtainable).  The derived frames and contact sheets ARE committed,
 # as evidence — see reference/vt1200-boot-video/NOTES.md for the regeneration recipe.
 video/
+
+# Worker scratch
+.vt1200-scratch/
diff --git a/harness/mame/skip_frame3000.png b/harness/mame/skip_frame3000.png
new file mode 100644
index 0000000..765c9da
Binary files /dev/null and b/harness/mame/skip_frame3000.png differ