Function check_simple_predicates 

pub fn check_simple_predicates(
    opts: &ConditionalOptions,
    current_l1_block: u64,
    current_l2_timestamp: u64,
) -> Result<(), ErrorObject<'static>>

Check (block_number_*, timestamp_*) predicates against current chain state. Returns on the first predicate that fails.

Per-account storage checks are handled separately since they need provider access.