<objective Detect the current project state and automatically invoke the next logical GSD workflow step. No arguments needed — reads STATE.md, ROADMAP.md, and phase directories to determine what comes next. Designed for rapid multi-project workflows where remembering which phase/step you're on is overhead. Supports flag to bypass safety gates (checkpoint, error state, verification failures, and prior-phase completeness scan). Before routing to the next step, scans all prior phases for incomplete work: plans that ran without producing summaries, verification failures without overrides, and pha…