Task ID: 3.1
Phase: 3
Description: Implement support & challenge staking queues, positional weighting, yield/burn calc.
Deliverables:
- Solidity StakeEngine
- Queueing logic
- Position logic
- Unit tests
Dependencies: 2.3
Estimated Hours: 260
Start Hour: 701
End Hour: 960
Bounty (VSP): 12800000