Don-Vicks-sentinel

        s => format!("{}d", s / 86_400),    }} /// Reads a Squads v4 `Multisig` account: discriminator, create_key, config_authority,/// threshold u16, time_lock u32, transaction_index u64, stale_transaction_index u64,/// rent_collector Option<Pubkey>, bump u8, members Vec<(Pubkey, permissions u8)>./// Returns `None` unless the layout is internally consistent, so a mistaken read is never shown.pub fn parse_multisig(data: &[u8]) -> Option<MultisigInfo> {    let mut at = 8 + 32 + 32;    let threshold = u16::from_le_bytes(data.get(at..at + 2)?.try_into().ok()?);    at += 2;    let time_lock = u32::from_le_bytes(data.get(at..at + 4)?.try_into().ok()?);    at += 4 + 8 + 8;    let collector = *data.get(at)?;    at += 1 + if collector == 1 { 32 } else { 0 };    if collector > 1 {        return None;    }    at += 1; // bump    let len = u32::from_le_bytes(data.get(at..at + 4)?.try_into().ok()?) as usize;    at += 4;    let end = at.checked_add(len.checked_mul(33)?)?;    if data.len() < end || len == 0 || len > 65_535 || threshold == 0 || threshold as usize > len {

1. Line 151 /// rent_collector Option<Pubkey>, bump u8, members Vec<(Pubkey, permissions u8)>.: Uses the bump seed, the extra byte that pushes the derived address off the ed25519 curve.
2. Line 167 let end = at.checked_add(len.checked_mul(33)?)?;: Uses checked arithmetic so overflow fails instead of wrapping.