fix: guard repaint boundary keys via per-instance attach/detach#84

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ehdnd wants to merge 3 commits intotimcreatedit:mainfrom

ehdnd:fix/globalkey-collision

Commits on Oct 15, 2025

fix: avoid globalkey collisions by per-instance key and notifier attach/detach
ehdnd
committed

Commits on Oct 16, 2025

test: added test for avoid globalkey collisions by per-instance key and notifier attach/detach
ehdnd
committed
chore: warn when falling back to legacy repaint boundary key
ehdnd
committed