Radio button component

[albx]

This pull request introduces a new, fully featured BitRadioGroup and BitRadio component set for forms in Blazor, along with comprehensive tests and Storybook stories. The new components support grouping, inline display, disabling, additional help text, and integration with form validation. The changes are organized as follows:

Component Implementation:

• Added BitRadioGroup<T> and BitRadio<T> components, supporting generic value types, inline/grouped display, disabling, additional text, and unique ID generation. These components are designed for use in forms and support validation and flexible layout. (src/BitBlazor/Form/Radio/BitRadioGroup.razor [1] src/BitBlazor/Form/Radio/BitRadioGroup.razor.cs [2] src/BitBlazor/Form/Radio/BitRadio.razor [3] src/BitBlazor/Form/Radio/BitRadio.razor.cs [4]

Storybook/Documentation:

• Added Storybook stories for BitRadioGroup demonstrating default, inline, disabled, grouped, and additional text usage scenarios, aiding in documentation and manual testing. (stories/BitBlazor.Stories/Components/Stories/Form/BitRadioGroup.stories.razor stories/BitBlazor.Stories/Components/Stories/Form/BitRadioGroup.stories.razorR1-R98)

Automated Testing:

• Added unit and rendering tests for BitRadioGroup, verifying value change behavior, checked attribute logic, rendering of inline/grouped/disabled/additional-text scenarios, and markup correctness. (tests/BitBlazor.Test/Form/Radio/BitRadioGroupTest.Behaviors.cs [1] tests/BitBlazor.Test/Form/Radio/BitRadioGroupTest.Rendering.razor [2]

[Copilot]

Pull request overview

This PR introduces a new radio button component set (BitRadioGroup and BitRadio) for single-choice selection in forms, with support for generic value types, validation, inline/grouped layouts, disabled states, and additional help text. The implementation includes comprehensive tests and Storybook examples, following existing component patterns in the codebase.

Key changes:

• New BitRadioGroup<T> and BitRadio<T> components with full form integration via InputRadioGroup and InputRadio
• Comprehensive test coverage including behavioral tests (value changes, checked attributes) and rendering tests (inline, grouped, disabled, additional text)
• Complete documentation with usage examples and accessibility guidance

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 11 comments.

Show a summary per file

File	Description
src/BitBlazor/Form/Radio/BitRadioGroup.razor	Component template wrapping InputRadioGroup with cascading context
src/BitBlazor/Form/Radio/BitRadioGroup.razor.cs	Component logic with validation support, inline/grouped layout options
src/BitBlazor/Form/Radio/BitRadio.razor	Individual radio item template with label and additional text
src/BitBlazor/Form/Radio/BitRadio.razor.cs	Radio item logic with CSS class computation and accessibility attributes
tests/BitBlazor.Test/Form/Radio/BitRadioGroupTest.Behaviors.cs	Behavioral tests for value changes and checked state management
tests/BitBlazor.Test/Form/Radio/BitRadioGroupTest.Rendering.razor	Rendering tests verifying markup for various configurations
stories/BitBlazor.Stories/Components/Stories/Form/BitRadioGroup.stories.razor	Storybook examples demonstrating component features
docs/form/radio.md	Comprehensive component documentation with examples
docs/quick-reference.md	Quick reference documentation with basic usage patterns
docs/README.md	Updated component index with radio button entry

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[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

src/BitBlazor/Form/Radio/BitRadio.razor:18

• Extra blank line at the end of the file. Other similar Razor files in the codebase (like BitCheckbox.razor and BitRadioGroup.razor) have only one blank line at the end, not two.

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