pub fn split_bill_paisa(total_paisa: i64, count: usize) -> Vec<i64>Expand description
Splits total_paisa across count people so the parts sum EXACTLY to total.
Port of lib/core/bill_splitter.dart splitBillPaisa.
div_euclid/rem_euclid match Dart ~//% on non-negative totals;
on negatives Rust keeps the exact sum where Dart drifts (improvement,
real inputs are non-negative). Counts past 10k return empty (FFI OOM guard).