chore(release): prepare 1.0.0-beta.12

[leoafarias]

What

Cuts 1.0.0-beta.12: promotes the Unreleased CHANGELOG section and bumps packages/naked_ui/pubspec.yaml.

Contents

One feature PR landed since 1.0.0-beta.11:

• feat: add semantic adapter APIs for visual-layer consumers #91 — semantic adapter APIs for visual-layer consumers: NakedButton.semanticHint, NakedSelect.semanticValue, and NakedRadioGroup<T> (a thin wrapper over Flutter's RadioGroup supplying a nullable onChanged, an inherited group enabled state, and an accessible group label). NakedRadioGroupScope is intentionally hidden from the public barrel — it is internal plumbing, mirroring Flutter's private _RadioGroupStateScope<T>.

Verification

• flutter analyze: no issues.
• flutter test: 712 passed, 3 skipped.
• flutter pub publish --dry-run: clean (only the pre-commit "modified files" warning, resolved by this commit).

After merge

Publishing is tag-driven (.github/workflows/release.yml on v[0-9]+.[0-9]+.[0-9]+*). Tag v1.0.0-beta.12 on main to publish to pub.dev.

[github-actions]

LCOV of commit 4a1c54e during Flutter CI #296

	(use "lcov --ignore-errors deprecated,deprecated ..." to suppress this warning)
Reading tracefile /tmp/__zgosalvez_github-actions-report-lcov/lcov.info.
Summary coverage rate:
  source files: 23
  lines.......: 90.4% (3110 of 3441 lines)
  functions...: no data found
  branches....: no data found
Message summary:
  1 warning message:
    deprecated: 1

Files changed coverage rate: n/a