Describe the upstream->private mirror chain, the v<version>-lofyer branch
naming for appearance customizations, and how to run scripts/sync-github.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Fetch all branches and tags from upstream GitHub and force-push them to
the 192.168.0.23 private origin (full mirror). Supports DRY_RUN and an
opt-in PRUNE_BRANCHES for true mirroring.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>