Add one-command RISE Testnet V2 deployment

[CryptoMickle]

Summary

• add a dedicated DeployRiseTestnet.s.sol deployment script
• deploy a fresh LegacyVRFAdapter against the existing RISE VRF coordinator
• deploy the current Relics V2 Delveworn core against that adapter
• add a helper that discovers the existing coordinator from the current dungeon contract and broadcasts the deployment

Intended rollout

The helper reads RISE_EXISTING_DUNGEON_ADDRESS or ../frontend/.env.local, calls coordinator() on the existing RISE deployment, then deploys the new adapter and V2 dungeon. The new Delveworn address can then replace NEXT_PUBLIC_DUNGEON_ADDRESS in Vercel/frontend configuration.

Validation

• forge fmt --check ✅
• forge build --sizes ✅
• full forge test -vvv suite ✅
• final diff contains only script/DeployRiseTestnet.s.sol and scripts/deploy-rise-testnet.sh

Ready to merge.