0298a88601
- Added getTodoPhases() and setTodoPhases() methods to ToolSession API for in-memory todo phase management. - Added getLatestTodoPhasesFromEntries() export to retrieve todo phases from session history entries. - Changed todo state management from file-based (todos.json) to in-memory session cache with automatic persistence. - Changed todo phases to sync from session branch history during branching and rewriting operations. - Removed file-based todo loading logic and replaced with session-based todo phase retrieval throughout codebase.