The TUI splash/footer and the dashboard /api/health + /api/updates/check
each had their own walk-up resolver with different rules, so they could
report different versions and trigger spurious update-available banners.
Dashboard now uses a direct ancestor walk (matching the TUI's old logic)
and only falls back to the sibling-cli probe for dashboard-source dev
mode; logo.ts delegates to it so there is one source of truth.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
