Add robust versioning strategy for releases

[ephur]

Implement consistent version bumping using bump2version, setuptools_scm, or a custom Git tag approach. Prior attempts failed — needs re-evaluation and tooling.

[ephur]

🤖 Initial triage (AI-generated):

This issue proposes a durable versioning strategy for CLI releases. Previous attempts failed — likely due to conflicting tooling or missing pyproject.toml integration.

⚙️ Suggested options:

• Use bump2version with .bumpversion.cfg to track CLI version
• Or adopt setuptools_scm for Git tag-derived versioning
• Ensure __version__ is set dynamically and exposed via --version

🧪 Validate against your Poetry + Makefile build chain.

Disclaimer: This triage is AI-generated and may need refinement.