Add a configurable columnOffset hook to undent so alignment can follow something other than raw UTF-16 offsets. This introduces the @okikio/undent/unicode subpath with terminal-style width helpers, generated East Asian Width tables, and a sync script that keeps those tables auditable against Unicode upstream. Wire the new subpath into Deno and npm exports, document when to opt into Unicode visual alignment, and cover the new API with dedicated tests. While threading the new option through the pipeline, also preserve inherited trim settings, keep non-structural Unicode whitespace intact, and avoid mutating frozen aligned wrappers so the alignment path stays predictable for callers.