Changed light mode icon because it was misleading

[dhirukumar]

Summary

This PR updates the Light Mode toggle icon in the UI.
The previous icon (⚙️-style gear sun) was visually misleading and looked like a settings icon, which caused confusion.

Replaced the old sun/gear-like icon

before

After

Added the clean and clear light bulb icon to represent Light Mode

Reason

The previous icon did not clearly represent Light Mode and visually conflicted with the settings icon.
The new icon is simpler, more intuitive, and improves UI clarity.

Checklist

I've read and followed the contributing guidelines
I've run make check-test locally; all checks and tests passed.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Summary by CodeRabbit

• Style
  • Updated theme toggle icons for improved visual presentation. The dark mode indicator is now displayed as a lightbulb instead of a sun, while maintaining the existing toggle functionality.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

Walkthrough

Updated the ModeToggle component to display a lightbulb icon instead of a sun icon when dark mode is enabled. The FontAwesome icon import changed from faSun to faLightbulb, preserving all component logic and the public API.

Changes

Cohort / File(s)	Summary
Icon Update frontend/src/components/ModeToggle.tsx	Replaced faSun import with faLightbulb from regular FontAwesome icons; updated conditional rendering to display faLightbulb for dark theme and faMoon for light theme

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Possibly related PRs

• feat(testing): Add unit tests for ModeToggle #1895: Direct precursor to unit tests that assert which icon is rendered for each theme mode with the new icon change.
• fix: dark mode toggle logic #1155: Previously modified the same ModeToggle component's icon and toggle UI logic for theme switching.

Suggested labels

frontend

Suggested reviewers

• kasya
• arkid15r

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

📜 Recent review details

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between f542220 and f81dbd6.

📒 Files selected for processing (1)

• frontend/src/components/ModeToggle.tsx (2 hunks)

Tip

📝 Customizable high-level summaries are now available in beta!

You can now customize how CodeRabbit generates the high-level summary in your pull requests — including its content, structure, tone, and formatting.

• Provide your own instructions using the high_level_summary_instructions setting.
• Format the summary however you like (bullet lists, tables, multi-section layouts, contributor stats, etc.).
• Use high_level_summary_in_walkthrough to move the summary from the description to the walkthrough section.

Example instruction:

"Divide the high-level summary into five sections:

1. 📝 Description — Summarize the main change in 50–60 words, explaining what was done.
2. 📓 References — List relevant issues, discussions, documentation, or related PRs.
3. 📦 Dependencies & Requirements — Mention any new/updated dependencies, environment variable changes, or configuration updates.
4. 📊 Contributor Summary — Include a Markdown table showing contributions:
   | Contributor | Lines Added | Lines Removed | Files Changed |
5. ✔️ Additional Notes — Add any extra reviewer context.
   Keep each section concise (under 200 words) and use bullet or numbered lists for clarity."

Note: This feature is currently in beta for Pro-tier users, and pricing will be announced later.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[github-actions]

The PR must be linked to an issue assigned to the PR author.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud