The F3 smoke false-failed: system VPN proxy swallows Invoke-WebRequest
to localhost (wiki bug #7), returning empty -> gate aborted before E/M.
Verified out-of-band: :8091 -> HTTP 200 (real stostayer.old page), so
the repoint actually succeeded. Switched smoke to curl.exe --noproxy.
Made F2 idempotent (only repoint if still localhost) so re-runs don't
clobber the original localhost backup.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
vitya
b686ac132f