The GET /config/timezone handler SELECTed app_config then, on the unset path, called getHouseholdTimezone(db) which re-issued the identical SELECT before falling back (IN-01). The fallback decision also lived in two places (IN-02). Route the handler through the centralized resolveHouseholdTimezone(row?.value) added for WR-01: no redundant round-trip, single source for the D-06 policy. Behavior unchanged. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>