- Updated `tests/test_image_node_sanitization.py` to include `github_token` in test inputs.
- Verified test now correctly covers github token sanitization.
- Updated `tests/test_image_node_sanitization.py` to avoid bare `try...except` that swallowed `AssertionError`.
- Verified the test fails correctly when sanitization is broken.
- Removed redundant calls to `sanitize_json_for_export` in `discord_image_node.py` loop.
- Verified ~33ms performance gain per batch via benchmark.
- Added regression test `tests/test_image_node_sanitization.py`.