- oakundo::global: the process-global undo stack, grouping and a
command observer API; facade undo.rs becomes a thin forwarder
- oakstorage::writethrough: the binding table, snapshot thread, flush
and config resolution; it subscribes to oakundo's observer itself
- the remaining non-forwarding facade logic (TaskMeta, effect chains,
timeline composites, RendererBox, exporter path) is documented as
facade-owned with reasons
- facade exports unchanged; full suite stays green (the one
render_manager_not_initialized failure is pre-existing on the base
commit)
Mike-Solar
8a2e45225f