- sync-status.sh: resolve protocol family from the compose x-upstreams chain
label via the registry (reference-rpc-endpoint.sh --protocol) instead of
path-substring guessing; legacy path detection kept as fallback for
composes without a resolved label. Unknown families report
'unsupported protocol: X' honestly instead of a bogus eth_chainId error.
Aztec reference lookup falls back to slug urls when rollup_version is
not in the registry.
- reference-rpc-endpoint.sh: new --chain <slug> (urls by registry key,
works for idless non-EVM entries) and --protocol <slug> modes; existing
chainid and --rollup-version lookups unchanged.
- mantle-sepolia: chainid 5001 -> 5003 (verified live: 0x138b), label and
--networkid now correct
- metis-sepolia: label resolves via registry override (drpc chains.yaml
carries wrong id 59901; live chain is 59902, verified via official RPC)
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
