GSD Plan Phase Creates detailed execution plans for project phases using gsd-planner agent. When to Use - Starting a new phase of development - Breaking down a wave into atomic tasks - Planning phase implementation details Process 1. Analyze wave description and acceptance criteria 2. Load codebase map for context (if exists) 3. Spawn gsd-planner agent to create phase plan 4. Verify plan structure (phases/waves/tasks) 5. Commit phase plan to git Output Documents - phase-plan.md - Detailed phase breakdown - Includes phases, waves, and atomic tasks Success Criteria Complete phase plan with all…