Add a DEBUG-gated testAwareDelay helper (same ICCERY_UI_TESTING=1
convention as AppPaths.testRoot) and apply it to the ensureNotRunning
100ms poll and the XY chartread 500ms pre-kill wait. Under UI tests the
intervals shrink ~10x; release builds compile the branch out entirely,
so production timing is unchanged. No current UI test exercises XY
cancel, so the 500ms site is future-proofing at zero risk today.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>