What Happened
- A broken import in `manager.py` referenced `get_default_skill_directories`, which does not exist in `discovery.py`; this PR changed it to `get_default_skill_dirs`, restoring normal execution for `create_skill`, `edit_skill`, `delete_skill`, `patch_skill`, and `write_skill_file`.
- A broken import in `manager.py` referenced `get_default_skill_directories`, which does not exist in `discovery.py`; this PR changed it to `get_default_skill_dirs`, restoring normal execution for `create_skill`, `edit_skill`, `delete_skill`, `patch_skill`, and `write_skill_file`.
- 1 evidence item attached for review.