feat: expand visual workflow coverage and theme validation

[vraj826]

Description

Expanded renderer snapshot coverage and added theme contract validation to improve confidence in SVG rendering behavior across supported layouts and themes.

Related Issue

Closes #172

Type of Change

• Refactor

Changes Made

• Expanded visual-workflow.test.js snapshot coverage for:

  • hidden trophies
  • no CP platform
  • single CP platform
  • multiple CP platforms
  • graceful fallback rendering

• Added lightweight SVG validity assertions for generated output

• Added theme contract validation to verify:

  • required color fields
  • chart color definitions
  • expected theme object structure

• Updated existing snapshots using the current test infrastructure

• Added missing contract color aliases to:

  • cobalt2
  • one-dark
  • github-light

Testing

• Ran npm test — all tests pass
• Tested manually (if applicable)

Verification performed:

• npm.cmd run test:visual -- --updateSnapshot → passing
• npm.cmd test → passing (12 suites, 172 tests, 28 snapshots)

Screenshots (if applicable)

N/A

Checklist

• My code follows the project's code style
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings or errors
• I have updated the documentation if necessary
• My changes are scoped to a single issue

[vercel]

@vraj826 is attempting to deploy a commit to the Dot_NotSam's projects Team on Vercel.

A member of the Team first needs to authorize it.

[vraj826]

@SamXop123 Can you review the changes!

[SamXop123]

Excellent work @vraj826

[github-actions]

🎉 Congratulations @vraj826! 🎉

Your pull request has been successfully merged into samdev-pulse! Thank you so much for your valuable contribution and effort. Every single improvement helps make samdev-pulse a better profile experience for everyone! 🙌

🚀 What's Next?

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💬 Stay Connected:
Have any questions, want feedback, or just want to discuss further contributions? Feel free to reach out directly to the maintainer on Discord: dot_notsam!

Thank you again, and keep up the amazing work! 💻✨

[vraj826]

Excellent work @vraj826

Thank you @SamXop123