Function scopeDrawnRanges

Remarks

Applies to the range at rangeIndex — the ONE the picker just wrote — for both of its gestures, since a gesture on this pane places the range on this sheet either way:

• insert (append past the current length) — a brand-new reference drawn here;
• re-scope (replace in place) — dragging the ACTIVE reference here moves it to this sheet, which is how =A1 (Sheet1's) becomes =Sheet2!A1 when you drag it while viewing Sheet2.

Guarded on the range having actually CHANGED (identity compare against the current one), so a bare activation — setActive merely moving rangeIndex to a different reference, reusing the same range objects — never re-homes anything. That distinction is what keeps selecting a reference from silently moving it: only a geometry write re-homes, never a change of which reference is active.