[MugdhoAI]

Summary

• Run the existing PostgreSQL-backed CI workflow on Python 3.12, 3.13, and 3.14.
• Keep the existing dependency audit, Ruff, Docker, Compose, and integration test steps in the matrix.
• Disable fail-fast so one interpreter failure does not hide results from the others.

Why

pyproject.toml declares requires-python = ">=3.12", but CI previously exercised only Python 3.12. The matrix checks that declared compatibility instead of assuming it.

Verification

• GitHub Actions will run the full checks on each listed Python version.