refactor: split text generation item and add tests

[lyzno1]

Summary

• refactor GenerationItem into focused content/meta sections with shared hooks for workflow tabs and more-like-this state while preserving existing behaviors (including auto-switching to RESULT on new outputs)
• extract log formatting and keep handler memoization/guards clearer for copy, more-like-this, and log modal actions
• add GenerationItem tests covering more-like-this flow, log modal payload, copy behavior, feedback updates, child clearing, depth limits, and handler stability

Testing

• Passed

[gemini-code-assist[bot]]

Summary of Changes

Hello @lyzno1, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly refactors the GenerationItem component, which is responsible for displaying text generation results and associated actions. The primary goal was to enhance modularity and maintainability by decomposing the component into smaller, more focused units. This involved creating dedicated ContentSection and MetaSection components, along with custom hooks to manage their state and interactions. The refactoring ensures that existing functionalities, such as automatic tab switching for workflow results, are preserved, and the changes are thoroughly validated with new, extensive test cases.

Highlights

• Component Split: The GenerationItem component has been refactored and split into two specialized sub-components: ContentSection for rendering the main output and MetaSection for handling metadata and action buttons.
• Shared Hooks: New custom React hooks, useMoreLikeThisState and useWorkflowTabs, were introduced to centralize and manage complex state logic related to "more-like-this" functionality and workflow tab switching, respectively.
• Enhanced Test Coverage: Comprehensive unit tests have been added for the GenerationItem component, covering critical functionalities like "more-like-this" flow, log modal payload formatting, copy behavior, feedback updates, child clearing, depth limits, and handler stability.
• Improved Logic Handling: Log formatting logic has been extracted into a dedicated utility function, and handler memoization and guards for actions like copy, "more-like-this", and log modal have been clarified and improved.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with :thumbsup: and :thumbsdown: on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

[^1]: Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution.

[lyzno1]

/gemini review