Reviewing files that changed from the base of the PR and between 0cd0460 and 534c7f9.

• crates/consensus/src/stake_weighted_pbft.rs

crates/consensus/src/stake_weighted_pbft.rs (2)

121-122: LGTM! Critical overflow fix correctly implemented.

The division-based approach prevents integer overflow when approve_stake > u64::MAX / 2 while preserving the strictly-greater-than-50% consensus threshold semantics. Division by zero is already guarded at lines 116-118.

---

131-132: LGTM! Rejection threshold overflow fix correctly implemented.

The division-based approach prevents integer overflow while maintaining the >50% rejection threshold. Division by zero is already guarded at lines 127-129.

Consider adding a specific test case to verify behavior with large stake values near the overflow boundary:

#[test]
fn test_overflow_prevention_large_stakes() {
    let kp = Keypair::generate();
    let proposal = Proposal::new(
        ProposalAction::NewBlock { state_hash: [0u8; 32] },
        kp.hotkey(),
        0,
    );
    
    let mut round = StakeWeightedRoundState::new(proposal, 30);
    
    // Test with stake value near u64::MAX / 2
    let large_stake = u64::MAX / 2 + 1000;
    let total_stake = u64::MAX - 1000;
    
    let voter = Keypair::generate();
    round.add_vote(
        Vote::approve(round.proposal.id, voter.hotkey()),
        Stake::new(large_stake),
    );
    
    // Should not panic and correctly evaluate consensus
    assert!(round.has_stake_consensus(total_stake));
}