Function patch_seq_chan_send_safe 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn patch_seq_chan_send_safe(
    stack: Stack,
) -> Stack

Send a value through a channel, with error handling

Stack effect: ( value Channel – success_flag )

Returns 1 on success, 0 on failure (closed channel or wrong type). Does not panic on errors - returns 0 instead.

Safety

Stack must have a Channel on top and a value below it