[v0.1.0] — initial release

Extracted from localize_inputs 0.3 as the shared base for the split. Carries:

  • Localize.Inputs.ValidationError — structured exception every validator returns.
  • Localize.Inputs.Gettext — Localize-interpolated Gettext backend hosting UI translations.
  • priv/static/localize_inputs_core.css — the --li-* CSS variable tokens (light + dark mode defaults), the .sr-only utility, and the mobile-sheet @keyframes.

No HEEx components, parsers, or JS hooks live here — they're in the sibling input libraries.