Add warn!/info! calls to start_drag so every click that doesn't produce
a drag emits a console line with the cursor world position, stock/waste
sizes, and per-tableau pile lengths. This lets us see in browser DevTools
whether find_draggable_at is returning None (wrong hit position) or
something earlier in the pipeline is blocking.
Remove once root cause is identified.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
funman300
8b736cae3c