Function serialize_preresolved

crates/compile/src/compile.rs:1560–1579

(
  pr: &SyntaxPreresolved,
  stt: &CompileState,
  bytes: &mut Vec<u8>,
)

                name: type_name.pretty(),
                caller: format!("{who} @ compile_expr(Proj)"),
              }
            })?;

            let (ref_idx, _) = cache.refs.insert_full(type_addr.clone());
            let name_addr = compile_name(type_name, stt);

            stack.push(Frame::BuildProj(ref_idx as u64, idx_u64, name_addr));
            stack.push(Frame::Compile(struct_val.clone()));
          },

          ExprData::Mdata(kv, inner, _) => {
            // Compile KV map
            let mut pairs = Vec::new();
            for (k, v) in kv {
              let k_addr = compile_name(k, stt);
              let v_data = compile_data_value(v, stt);
              pairs.push((k_addr, v_data));
            }
            // Mdata becomes a separate arena node wrapping inner
            stack.push(Frame::WrapMdata(vec![pairs]));
            stack.push(Frame::Compile(inner.clone()));
          },