fix: improve layout and styling in TextCompletionView

[CoolSpring8]

• Updated the structure of the TextCompletionView component to enhance layout responsiveness.
• Adjusted class names for better styling and ensured proper flex behavior for child elements.
• Maintained existing functionality while improving the overall user interface experience.

Summary by CodeRabbit

• Style
  • Improved textarea layout with enhanced responsive sizing and scroll behavior controls.
  • Refined container structure for better flex wrapping and overflow handling.

[coderabbitai]

Walkthrough

A layout and styling refactor of the TextCompletionView component, introducing min-h-0 constraints to containers and expanding Textarea configuration from simple props to a structured Mantine classNames object for enhanced control over styling and overflow behavior.

Changes

Cohort / File(s)	Summary
TextCompletionView Layout & Styling Refactor src/components/TextCompletionView.tsx	Added min-h-0 constraints to outer and inner containers to manage flex wrapping. Expanded Textarea configuration from basic props (removed minRows, autosize, full-height class) to a structured Mantine classNames object (root, wrapper, input) with placeholder prop for granular styling and scroll control. Refactored container flex properties to align with new layout constraints.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

• Verify that min-h-0 constraints don't inadvertently hide content or cause unexpected overflow behavior
• Confirm that the new Mantine classNames structure produces the same visual output as the previous direct className approach
• Test responsive behavior and scroll handling with the updated Textarea configuration, especially around wrapper and input overflow styling

Poem

🐰 A rabbit's ode to tidy layout:
The containers now know their min height,
Flex wrapping's controlled with zero's might,
Mantine's classNames bring order so true,
Scrollbars flow smoother—less class to construe! ✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main changes: layout adjustments (min-h-0 constraints, flex properties) and styling enhancements (expanded Textarea classNames, styled components).
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch text-view-scrollable-textarea

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between df927ac and a6bec6f.

📒 Files selected for processing (1)

• src/components/TextCompletionView.tsx (1 hunks)

🔇 Additional comments (2)

src/components/TextCompletionView.tsx (2)

18-19: LGTM! Correct flex pattern for scrollable content.

The min-h-0 additions on both flex containers are essential for proper scrolling behavior, allowing flex items to shrink below their content size.

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27-32: Verify focus indicator visibility for accessibility.

The refactor to Mantine's classNames structure is appropriate and enables better control over flex layout and scrolling behavior. However, focus:outline-none combined with border-none and bg-transparent may remove all visible focus indicators.

Please verify that keyboard users can see a clear focus state when the textarea receives focus. If no visible indicator exists, consider adding a custom focus style (e.g., focus:ring-2 focus:ring-blue-500) to meet WCAG accessibility standards.

Additionally, verify the height behavior works correctly when the available viewport space is less than 18rem (the minimum height), ensuring the scrolling behaves as expected without breaking the layout.

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