[minhuanli]

This pull request modernizes the packaging and import structure for the project, improves compatibility with newer Python versions, and streamlines the CI/CD workflow. The most significant changes are the migration from legacy setup.py/setup.cfg configuration to a pyproject.toml-based build system, introduction of lazy imports for the top-level API, and updates to CI scripts for Python 3.12 support and improved dependency management.

Packaging and Build System Modernization

• Migrated from legacy setup.py and setup.cfg to a standardized pyproject.toml configuration, specifying build requirements, project metadata, dependencies, and coverage/test settings. This enables modern Python packaging workflows and better compatibility with tools like pip and build. [1] [2] [3]
• Removed the now-unnecessary MANIFEST.in and .coveragerc files, consolidating package data and coverage configuration into pyproject.toml. [1] [2]

API and Import Improvements

• Refactored SFC_Torch/__init__.py to use a lazy import mechanism for top-level API objects and submodules, improving import speed and maintaining compatibility. Also updated the version retrieval to use importlib.metadata for better compatibility with modern packaging.

Continuous Integration and Deployment

• Updated CI workflows to test against Python 3.12 and use the latest GitHub Actions for checkout and setup-python. Simplified dependency installation and coverage reporting in CI scripts. [1] [2] [3]

Versioning

• Bumped the package version from 0.2.5 to 0.3.0 to reflect these breaking and structural changes.

Author and Metadata Updates

• Updated author email and fixed typos in metadata for consistency across files. [1] [2]