feat(atomic): migration of functional generated content components to lit

[mmitiche]

KIT-5038

This PR successfully migrates the internal answer content functional components including the generated-text-content, generated-markdown-content and generated-content-container from Stencil to Lit while maintaining backward compatibility. The migration follows established patterns and preserves existing functionality for Stencil consumers.

Key changes:

• Created new functional Lit implementation for generated-text-content, generated-markdown-content and generated-content-container.

• Preserved Stencil version of these components stencil-*.tsx with deprecation notice for backward compatibility

• Added comprehensive test coverage for the new Lit functional components

[Copilot]

Pull request overview

This PR successfully migrates internal generated content functional components from Stencil to Lit, following the established migration pattern in the Atomic package. The migration creates new Lit implementations (generated-text-content.ts, generated-markdown-content.ts, generated-content-container.ts) while preserving backward compatibility by retaining deprecated Stencil versions prefixed with stencil-*. All new components include comprehensive test coverage following the established testing patterns.

Key Changes

• New Lit functional components with proper TypeScript interfaces and render* naming convention
• Stencil versions renamed with stencil-* prefix and marked as @deprecated
• Comprehensive test suites using renderFunctionFixture for all new components
• Updated import paths in consuming code to reference Stencil versions

Reviewed changes

Copilot reviewed 8 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
stencil-generated-content-container.tsx	Updated imports to reference stencil-prefixed components for backward compatibility
stencil-generated-text-content.tsx	New deprecated Stencil version of text content renderer
stencil-generated-markdown-content.tsx	New deprecated Stencil version of markdown content renderer
generated-text-content.ts	New Lit functional component for rendering plain text generated content
generated-text-content.spec.ts	Comprehensive test suite covering all text content rendering scenarios
generated-markdown-content.ts	New Lit functional component for rendering markdown with DOMPurify sanitization
generated-markdown-content.spec.ts	Test suite with mock validation for markdown transformation and sanitization
generated-content-container.ts	New Lit functional component with children support for content container
generated-content-container.spec.ts	Test suite covering format switching, streaming state, and children rendering
generated-answer-common.tsx	Updated import to reference deprecated Stencil container version

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[alexprudhomme]

👍 nice

[louis-bompart]

Some tweaks in the UT

[erocheleau]

Just a small question, otherwise looks good!