When phase numbers are globally sequential across milestones (e.g., phases 61-67), the banner showed "Phase 63/5" where 5 was the count of remaining phases — easily mistaken for "63 out of 5 total." Clarify that T must be total milestone phases and add fallback display format for when phase numbers exceed the total count. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>