Function restore_cells 

pub fn restore_cells(m: &mut Machine, cells: &[Word], root: Word) -> Word

Materialize a term whose cells use buffer-relative pointer payloads, rooted at root, onto the machine heap; returns the heap root. The slice-based core of restore_from_buf — also used by the fact-table to restore a non-immediate column from its read-only .rodata blob (those blobs are ground, so the TAG_REF arm never fires there).