The routing.mode was defaulting to 'auto', which uses git remote URL
to detect user role. Non-SSH URLs can cause mail and issues to be
routed to ~/.beads-planning instead of the local .beads directory.
Setting routing.mode to 'explicit' disables auto-routing entirely,
keeping all issues in the expected local directory.
Fixes: x-kho
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>