- Enhanced README.md with sponsor iframe and improved formatting.
- Added README_FR.md for French localization of the project.
- Refactored type hints in kicad_symbol_sqlite.py and nexar.py for consistency.
- Simplified exception handling in __init__.py.
- Cleaned up imports and removed unused variables in various plugin files.
- Introduced CI workflow for repository sanity checks.
- Added smoke tests documentation in tests/README.md.
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