Add stake delegation with optional key registration - #57

Bugbot Analysis Progress (5m 10s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (5m 6s)
✅ Posted analysis results (1s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_f309bf69-5a15-4ddd-84b8-ecd526fb75d7