Improve pyproject_versions.py with version coherence checking

[Copilot]

Enhanced the .github/pyproject_versions.py script to address version coherence issues and prevent manual version bumps that forget to use bumpver.

Problem

The original issue identified a need to check version coherence between files managed by bumpver to avoid manual bumps that forget to use the proper versioning tool. The three files that should always have synchronized versions are:

• codecarbon/_version.py
• docs/edit/conf.py
• pyproject.toml

Solution

Added comprehensive version coherence checking functionality:

New Features

• Version coherence validation: Automatically checks that all three bumpver-managed files have consistent versions
• New CLI option: --check_coherence for standalone coherence validation
• Automatic prevention: All operations now validate version coherence before proceeding
• Clear error reporting: Detailed messages identify which files have inconsistent versions

Key Functions Added

def get_version_from_file(filepath: str, pattern: str) -> str:
    """Extract version from a file using regex patterns"""

def get_all_versions() -> dict:
    """Read versions from all three bumpver-managed files"""

def check_version_coherence() -> bool:
    """Validate version consistency across files"""

Usage Examples

# Check version coherence only
python .github/pyproject_versions.py --check_coherence

# Normal operations now include automatic coherence checking
python .github/pyproject_versions.py --replace True

Error Prevention

When versions are inconsistent, the script now:

• Displays clear error messages showing which files have different versions
• Prevents operations that could lead to further inconsistencies
• Guides users to use 'bumpver' for consistent version updates

Example output for inconsistent versions:

✗ Version coherence check failed! Versions are inconsistent:
  pyproject.toml [tool.bumpver] current_version: 3.0.3
  codecarbon/_version.py __version__: 3.0.4
  docs/edit/conf.py release: 3.0.3

Please use 'bumpver' to update versions consistently across all files.

Backward Compatibility

• All existing functionality preserved
• CI workflows continue to work unchanged
• Fixed existing bug in --only_package_version output (was referencing wrong variable)

The improvements ensure that version coherence is maintained across all bumpver-managed files and help prevent the manual version update issues described in the original issue.

Fixes #904.

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[SaboniAmine]

LGTM, thanks Benoît!