Function item_cost_bytes

zisk/host/src/main.rs:320–328

Structural cost estimate for one work item, in serialized-AST bytes. For a Standalone item that's the byte length of its primary const; for a Muts block it's the sum across all member + ctor projections. Reads `LazyConstant::raw_bytes().len()` (O(1) per target) — no parse, no allocation. Why bytes are a usable proxy for kernel cycles: body size scales with AST node count, which scales with WHNF

(env: &IxonEnv, item: &AnonWorkItem)

    let end = (start + shard_consts).min(total);
    out.push((start, end));
    start = end;
  }
  out
}

/// Structural cost estimate for one work item, in serialized-AST bytes.
///
/// For a Standalone item that's the byte length of its primary const;
/// for a Muts block it's the sum across all member + ctor projections.
/// Reads `LazyConstant::raw_bytes().len()` (O(1) per target) — no parse,
/// no allocation.
///