Function patch_seq_push_closure 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn patch_seq_push_closure(
    stack: Stack,
    fn_ptr: u64,
    capture_count: i32,
) -> Stack

Create closure from function pointer and stack values (all-in-one helper)

Pops capture_count values from stack (top-down order), creates environment, makes closure, and pushes it onto the stack.

This is a convenience function for LLVM codegen that handles the entire closure creation process in one call. Uses Arc for TCO support.

Safety

• fn_ptr must be a valid function pointer
• stack must have at least capture_count values