Bug RHOAIENG-46361: Make chat window monospace font

[Gkrumbach07]

Summary

This PR fixes RHOAIENG-46361 by making the chat window display messages in a monospace system font.

Changes

• Added font-mono class to the message content div in components/frontend/src/components/ui/message.tsx:219
• The input box styling remains unchanged as requested
• Both bot and user messages now display in monospace font

Testing

• ✅ Build passes
• ✅ Linter passes
• ✅ Change is minimal and focused

Related

• Jira: RHOAIENG-46361

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🤖 Generated with Claude Code

[github-actions]

Claude Code Review

Summary

This PR adds monospace font styling to the chat message window by adding the font-mono Tailwind class. The change is minimal, focused, and follows established frontend patterns. The implementation is clean and addresses the requirements stated in RHOAIENG-46361.

Issues by Severity

🚫 Blocker Issues

None found.

🔴 Critical Issues

None found.

🟡 Major Issues

None found.

🔵 Minor Issues

1. Consider Typography Consistency

• Location: components/frontend/src/components/ui/message.tsx:219
• Issue: The change applies monospace font to all message content. Consider whether this should also apply to markdown-rendered elements like headings, lists, and code blocks within messages.
• Impact: Markdown elements might have different font stacks that could conflict with the base font-mono class.
• Recommendation: Test with various markdown content (headings, lists, inline code, code blocks) to ensure consistent rendering.

2. Design System Documentation

• Issue: No mention of whether this change aligns with a broader design system decision or is specific to this component.
• Impact: Future developers might not understand the reasoning for monospace in chat vs. other UI areas.
• Recommendation: Consider documenting this typography choice in DESIGN_GUIDELINES.md if it's part of a broader pattern, or add a comment in the code explaining the monospace requirement for this specific component.

Positive Highlights

✅ Minimal, focused change: Single-line modification that does exactly what's needed

✅ Follows Tailwind patterns: Uses standard Tailwind utility class (font-mono) rather than custom CSS

✅ Preserves existing logic: No changes to conditional rendering or component behavior

✅ Type safety maintained: No TypeScript changes needed, preserving existing type safety

✅ Follows colocation principles: Changes are in the right file (UI component)

✅ Build and lint passing: PR description indicates quality checks passed

Architecture & Patterns Review

✅ Shadcn UI usage: The Message component follows Shadcn patterns with proper use of cn() utility for class merging

✅ Component structure: Changes don't violate the established component patterns

✅ No React Query impact: UI-only change with no data fetching implications

✅ No type violations: No use of any types

Security Review

✅ No security implications: Pure styling change with no authentication, authorization, or data handling impact

✅ No XSS concerns: No changes to how content is rendered or sanitized

Performance Review

✅ No performance impact: Adding a single CSS class has negligible performance cost

✅ Font loading: font-mono uses system monospace fonts, so no additional font downloads required

Testing Review

Needs verification: The PR description mentions build and linter pass, which is good. However, consider testing:

• Messages with markdown content (headings, lists, tables)
• Messages with inline code blocks vs. multiline code blocks
• Long messages that wrap
• Mixed content (text + code + lists)
• Emoji rendering in monospace context

Recommendations

Priority: Low

1. Manual testing: Verify the change with various message content types (especially markdown-heavy content) to ensure consistent, readable rendering.

2. Design review (if applicable): If this wasn't already reviewed by the design team, consider whether monospace is the desired font for all chat content or just specific parts (e.g., code).

3. Documentation: Add a comment in the code or design guidelines explaining why monospace is used for chat messages.

4. Consistency check: Verify if there are other chat/message components in the codebase that should receive the same treatment.

Conclusion

Verdict: ✅ APPROVED

This is a clean, minimal change that follows established patterns. While there are some minor considerations around markdown rendering and design consistency, these are low-priority concerns that don't block the PR. The change is safe to merge.

Estimated Risk: Very Low
Code Quality: High
Pattern Adherence: Excellent

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🤖 Reviewed by Claude Code with context from CLAUDE.md, frontend-development.md, and react-query-usage.md

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📋 View memory system files loaded (click to expand)

What Amber Loaded for Code Review

Amber automatically loaded these repository standards from the memory system:

1. CLAUDE.md - Master project instructions, development standards
2. backend-development.md - Go backend, K8s integration patterns
3. frontend-development.md - NextJS, Shadcn UI, React Query patterns
4. security-standards.md - Auth, RBAC, token handling
5. k8s-client-usage.md - User token vs service account patterns
6. error-handling.md - Consistent error patterns
7. react-query-usage.md - Data fetching patterns

Impact: This review used your repository's specific code quality standards, security patterns, and best practices from the memory system (PRs #359, #360) - not just generic code review guidelines.