feat: add font customization options in SettingsTab

Ghostrequested to merge
list-jonas/dev/typography into v3

What changed

  • Added headerFontPreset, textFontPreset, and fontSize to theme store with apply methods
  • Added “Typography” section in Appearance settings with separate Header font and Text font selectors
  • Applied fonts via CSS variables: --font-minecraft (headers) and --font-minecraft-ten (text)
  • Persisted and re-applied on rehydrate via norisk-theme-storage

Why

  • Accessibility
  • Personal Pref.

Testing

  • Verified header and text fonts update live via Appearance settings
  • Verified base font size updates body text and persists across relaunch
  • Confirmed headings use header preset; body and UI text use text preset
  • Verified font rendering in MacOS and Windows
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