v1.2.1

[1.2.1] - 2026-05-13

Fixed

• Hex publish compatibility — Replaced inflex (GitHub dep, blocked hex.publish) with
  plurality (Hex dep) for route name singularization. Plurality is a modern, zero-regex
  inflection library with verified accuracy across 80k+ noun pairs.

Changed

• mix.exs dependency: inflex → plurality ~> 0.2
• RouteIntrospection.singularize/1 now calls Plurality.singularize/1 directly