- Introduced a new architecture specification for Phase 4 final bugs, detailing scope, decisions, runtime data contracts, action roles, execution lanes, speech ownership, and signal flow.
- Implemented changes in `scripts/action_registry.gd`, `scripts/action_editor.gd`, `scripts/sandbox_stage.gd`, `scripts/stage_gizmos.gd`, `scripts/stickman_factory.gd`, and `scripts/stickman_rig.gd` to address identified bugs.
- Created a new test suite `tests/test_phase4_final_bugs.gd` to validate the implementation, covering action roles, grid snapping, prop manipulation, reactive runtime lane, spawn pose preservation, and more.
- Added a unique identifier for the test file to ensure proper tracking and management.
- Added a new animation specification document for Phase 9 Task 5 detailing the requirements for rig animation controls.
- Introduced a new `StickmanRig` script to manage the facing direction and joint bending for the rig.
- Implemented UI elements in the test harness for selecting animations, controlling playback (play/pause/resume/stop), and toggling loop mode.
- Enhanced the `test_harness.gd` script to handle animation playback state and UI interactions.
- Updated documentation in `AGENTS.md`, `README.md`, and `RIGGING.md` to reflect the new animation features.
- Added StickmanFactory to load and instantiate .stk files into master_rig.tscn.
- Created a Test Harness scene for debugging bone scales, vector drawing offsets, and IK limits.
- Updated stk_rig_adapter to fit head bone and mount head shapes as full geometry.
- Enhanced README and PROJECT documentation to reflect new features and usage.
- Introduced UI elements for file selection and visual debugging in the Test Harness.
- Refactored code to improve clarity and maintainability, including removal of unused functions.