- Added GoalRuntime with wall-clock and token accounting, budget steering, and lifecycle operations (create, pause, resume, drop, complete).
- Exposed goal tool as a hidden agent tool, activated only when goal mode is enabled.
- Integrated goal continuation loop in InteractiveMode with auto-submit between turns.
- Added status line segment and theme icons for goal mode state.
- Exported `submitInteractiveInput()` function for programmatic submission of user input in interactive mode.
- Fixed continue special path to skip optimistic submission state check for already-started prompts.
- Added 2 test cases covering continue submission behavior and optimistic state cancellation.