Function pd_set_verdict 

#[unsafe(no_mangle)]
pub extern "C" fn pd_set_verdict(
    doc_ptr: *const u8,
    doc_len: u32,
    verdict_ptr: *const u8,
    verdict_len: u32,
) -> u64

Set, replace, or clear the review verdict. verdict is either the single-key union — {"Approved": {"at": "…"}} / {"ChangesRequired": {"at": "…"}} — or the literal null to return the review to in-progress. Returns the updated document.