The zones.kind CHECK constraint still only allowed 'forward', 'reverse4'
and 'reverse6', so creating an extended zone hit a constraint failure
and a 500. Rebuilds the zones table with the widened constraint while
preserving row ids so records.zone_id references stay valid.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V8c76Xr2BycaHHu5N4buqi
owenandClaude Sonnet 5
9c1b41bfef