Adjust line-height of markdown block view

[KrabsWong]

Expand the line-height of markdown block view to avoid overcrowding the content

Related GitHub Issue

Closes: #3437

Description

Content of the markdown view is so crowed.

Test Procedure

Type of Change

• 🐛 Bug Fix: Non-breaking change that fixes an issue.
• ✨ New Feature: Non-breaking change that adds functionality.
• 💥 Breaking Change: Fix or feature that would cause existing functionality to not work as expected.
• ♻️ Refactor: Code change that neither fixes a bug nor adds a feature.
• 💅 Style: Changes that do not affect the meaning of the code (white-space, formatting, etc.).
• 📚 Documentation: Updates to documentation files.
• ⚙️ Build/CI: Changes to the build process or CI configuration.
• 🧹 Chore: Other changes that don't modify src or test files.

Pre-Submission Checklist

• Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
• Scope: My changes are focused on the linked issue (one major feature/fix per PR).
• Self-Review: I have performed a thorough self-review of my code.
• Code Quality:
  • My code adheres to the project's style guidelines.
  • There are no new linting errors or warnings (npm run lint).
  • All debug code (e.g., console.log) has been removed.
• Testing:
  • New and/or updated tests have been added to cover my changes.
  • All tests pass locally (npm test).
  • The application builds successfully with my changes.
• Branch Hygiene: My branch is up-to-date (rebased) with the main branch.
• Documentation Impact: I have considered if my changes require documentation updates (see "Documentation Updates" section below).
• Changeset: A changeset has been created using npm run changeset if this PR includes user-facing changes or dependency updates.
• Contribution Guidelines: I have read and agree to the Contributor Guidelines.

Screenshots / Videos

Previews screenshout

After change the line-height

Documentation Updates

Additional Notes

---

Important

Adjust line-height for list elements in MarkdownBlock.tsx to improve readability.

• Style Change:
  • Adjust line-height from 1.25 to 1.75 for li, ol, ul in StyledMarkdown in MarkdownBlock.tsx to improve readability.

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[huajiankan]

Devil in details. Make Roo-Code Greater Again :)

[adamhill]

I like the improved readability. But some people will want the density.

1.25x seems like the minimum viable spacing - Would you entertain adding a slider in settings between 1.25 and 2.0x.

Thanks for helping out with old eyes

[KrabsWong]

I like the improved readability. But some people will want the density.

1.25x seems like the minimum viable spacing - Would you entertain adding a slider in settings between 1.25 and 2.0x.

Thanks for helping out with old eyes

Good idea, I'll try to add a new setting section for UI Settings with a slider for setting the line-height of markdown view
New PR will be pulled soon.