xfg-stark-cli relay architecture: daemon RPC bridge replaces API backend

Replace centralized usexfg.org API verification with decentralized relay:
- xfg-stark-cli validates burns via Fuego daemon RPC (localhost → seed node fallback)
- FuegoRpcClient (fuego_rpc.rs) with 5 commitment endpoints + auto-connect
- CLI bundles STARK proof + merkle proof + Elderfier consensus signatures
- L2 contract verifies EFier sigs against on-chain registry (no API trust)
- Updated docs/README.md and IMPLEMENTATION_SUMMARY_V3.md for relay flow
- Ed25519 signature verification contracts and documentation
- Frontend scaffold, API scaffold, and additional Solidity contracts

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Modify release workflow for manual dispatch and action version

Updated release workflow to allow creation on manual dispatch and changed action version.

Modify release workflow for manual dispatch and action version

Updated release workflow to allow creation on manual dispatch and changed action version.

Update README.md

repo links

xfgstark innit