pub fn parse_chain(s: &str) -> Result<Chain, String>Expand description
Parse a chain string into a Chain. Accepts:
- Friendly names: “ethereum”, “arbitrum”, “solana”, etc.
- CAIP-2 chain IDs: “eip155:1”, “eip155:42161”, etc.
- Legacy family names for backward compat: “evm” → resolves to ethereum