After several rounds of patch alignment issues with the overlay-patches
approach, switching to the local Red Bear base fork. The local fork is
the durable source of truth (already at d0ca0d5f with 14 unused-var
fixes). Future work will import upstream redox-os/base commits into the
fork and re-apply any necessary Red Bear deltas as patches on top.
This matches the existing pattern: kernel and relibc are also built
from local forks (local/sources/kernel, local/sources/relibc).
The old overlay patches in local/patches/base/ are preserved for
reference and will be re-applied to the fork during the next
synchronization pass.
vasilito
439542adaa