Make empty sidebar space a window-drag region - #12162

Bugbot Analysis Progress (4m 57s elapsed)

✅ Gathered PR context (32s)
✅ Completed bug detection (4m 24s)
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Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_9b916572-a91c-40fb-b01c-d03ec13ddf5b