refactor(svg): move FONT_MAP out of generator.ts into a dedicated lib/svg/fonts.ts module

[JhaSourav07]

🧩 Background

FONT_MAP in lib/svg/generator.ts maps shorthand keys to full CSS font stacks. As more fonts are added, keeping it in the generator inflates an already large file.

🎯 Objective

Move FONT_MAP and font-resolution logic into lib/svg/fonts.ts and re-export it from generator.ts.

📁 Files to touch

• lib/svg/generator.ts
• lib/svg/fonts.ts (new)

🛠️ Implementation steps

• Create lib/svg/fonts.ts exporting FONT_MAP and a resolveFont(font?: string): string | null helper.
• Import and use in generator.ts.
• Add unit tests for resolveFont covering predefined, dynamic, and invalid inputs.

✅ Definition of done

• generator.ts no longer contains the font map.
• resolveFont is unit-tested.
• All existing generator tests pass.

[RavindiFernando]

Hi, I am a GSSoC 2026 contributor and would like to work on this.

[Pratikshya32]

Hello @JhaSourav07! /claim

[sahil-shv]

/claim

[github-actions]

✅ Successfully assigned issue to @sahil-shv

💡 Please read CONTRIBUTING.md if you haven't already. Good luck! 🚀

[github-actions]

⚠️ Assignment automatically removed due to inactivity.
Feel free to reclaim the issue if you want to continue working on it.