Add canonical finalized native RPC

[JROChub]

Summary

• add a persistent canonical native chain and finalized JSON-RPC for chain ID 177155
• verify EIP-1559 signatures on every validator and finalize blocks with strict-majority quorum certificates
• add deterministic state roots, replay validation, vote locks, replica catch-up, historical finalized reads, health checks, and metrics
• remove retired VPS addresses and document honest operational constraints
• add a repeatable three-validator test including a late replica catch-up

Scope and constraints

• fixed validator set committed at genesis
• deterministic leader per height; no view-change protocol yet
• native whole-token transfers only; contract execution is explicitly unsupported
• zero native execution fee

Verification

• cargo clippy --all-targets --all-features -- -D warnings
• cargo test --all-targets --locked
• cargo test --all-targets --features net --locked
• scripts/test_native_rpc_cluster.sh
• python3 scripts/test_rpc_check.py
• bash scripts/test_cli.sh
• cargo package --allow-dirty --locked
• docker compose config
• local live RPC probe for chain ID 177155