a9ce3a13cf
Adds two synthetic multi-output tests (niri's layout harness supports several outputs) proving scratchpad_show targets the FOCUSED output, plus a control that it returns to the origin output when focus is unchanged. This is the substitute for manual multi-monitor verification on a single-display machine. 117 layout tests pass. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>