Sharp: autonomous sharp-money trading agent on Solana, built on TxLINE

Reads TxLINE consensus odds, de-vigs, detects sharp-money steam, commits
its decision on-chain before kickoff, paper-trades a bankroll, self-grades
on closing-line value and the real result, and proves its source data via
txoracle.validate_odds. Fully autonomous. TxODDS World Cup hackathon.