Function decode_log 

pub fn decode_log(log: &Log) -> Option<MarketEvent>

Decode a raw Alloy Log into a MarketEvent, if recognized.

Returns None for unrecognized events (MarginAdjusted, PerpCreated, module registration events, ERC20 events, etc.).

Errors

Returns None (not an error) if ABI decoding or value conversion fails. This is intentional — a malformed log should not crash the event stream.