[dezren39]

💡 What: Removes global decorationGeneration counter and uses stable, state-derived keys for ProseMirror cursor and selection widgets.
🎯 Why: The global counter was bypassing ProseMirror's built-in DOM node recycling, forcing continuous recreation of widgets on every transaction and causing layout thrashing.
📊 Impact: Significantly reduces DOM manipulation and layout thrashing during active editing and cursor movement.
🔬 Measurement: Verify by typing or moving cursors while profiling the renderer - DOM node creation/destruction for cursors will drop to near zero unless their visual state changes.

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PR created automatically by Jules for task 17317210007050591248 started by @dezren39

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[dezren39]

Closing as obsolete: key-only change leaves collab-cursor-hovered orphaned after unhover; superseded by #379

[google-labs-jules]

Closing as obsolete: key-only change leaves collab-cursor-hovered orphaned after unhover; superseded by #379

Understood. Acknowledging that this work is now obsolete and stopping work on this task.