v1.2.0 – Codex skill + refreshed setup

🚀 What’s New in v1.2.0

• 🧠 Bundled Codex skill
  Added a packaged /smart-commit Codex skill as a ready-to-install artifact (dist/smart-commit.skill).

• 📦 Zero-clone installation
  The skill is now fully packaged, so users can install it directly without cloning the repo.

• 📚 Improved documentation
  Added clear Codex installation and usage instructions to the README.

• 🧩 Refreshed setup wizard
  Updated provider and model options to reflect current supported configurations.

• 🔖 Version bump
  Released as v1.2.0 to reflect the new Codex skill workflow and setup improvements.