Release v1.6.1

What changed

• Updated packaging license metadata to modern PEP 621 style:
  • license = "MIT"
  • license-files = ["LICENSE"]
• Removed deprecated license classifier from classifiers in pyproject.toml.
• Eliminated setuptools deprecation warnings during python3 -m build.

Why it matters

• Keeps package metadata future-proof and aligned with current packaging standards.
• Ensures clean build output without deprecation noise.

Stability Statement

• v1.6.1 is a patch maintenance release.
• No runtime behavior changes.
• No CLI, provider, or output contract changes.

Scope Clarification

• Stateless execution model unchanged.
• No architecture or feature-scope expansion in this release.

Scope Clarification

• chore(v1.6.1): modernize license metadata for packaging by @damienSavoldelli in #28

Full Changelog: v1.6.0...v1.6.1