- Add planning mode checkbox to NewTaskModal with onPlanGenerated callback
- Wire up planning mode flow in App.tsx to open modal after task creation
- Add initialPlan prop to PlanningModeModal with auto-start logic
- Add comprehensive tests for planning mode checkbox flow in both modals
- Include changeset for the planning mode checkbox fix
- Rework the planning modal into scrollable content regions with fixed footers for the initial, question, and summary states
- Refresh question and summary styling with clearer progress, polished selection controls, and improved dependency and deliverable presentation
- Improve responsive behavior with full-height mobile layout, stacked actions, and better overflow handling
- Expand PlanningModeModal coverage to verify the new structure and add a TaskDetailModal smoke check
- Add PlanningModeModal component with interactive task planning UI
- Implement backend planning API with /api/planning endpoints
- Add PlanningSession class for managing planning state
- Integrate planning mode into dashboard with header button
- Add comprehensive tests for planning components and API routes
- Include AI agent structure for future planning automation
- Update README with Planning Mode documentation
