<objective Single-terminal command center for managing a milestone. Shows a dashboard of all phases with visual status indicators, recommends optimal next actions, and dispatches work — discuss runs inline, plan/execute run as background agents. Designed for power users who want to parallelize work across phases from one terminal: discuss a phase while another plans or executes in the background. Creates/Updates: - No files created directly — dispatches to existing GSD commands via Skill() and background Task agents. - Reads , , phase directories for status. After: User exits when done managi…