fix(code): make markdown preview readable in light mode

[kohanyirobert]

Motivation

Markdown preview in VSCode/VSCodium is hard to read when the Noctalia palette is in light mode: the theme template hardcodes "type": "dark", so VSCode uses dark-theme fallbacks for UI elements the theme doesn't explicitly color (including blockquotes and inline code backgrounds). The result is dark-on-dark or low-contrast text inside blockquote / code-block regions even when the rest of the editor is on a light surface.

This PR makes the VSCode template honor the current Noctalia mode and explicitly colors the markdown-preview surfaces from the palette.

Type of Change

• Bug fix
• New feature
• Breaking change
• Refactoring

Related Issue

• Closes # (none)

Changes

Assets/Templates/code.json:

• "type": "dark" → "type": "{{mode}}" — the template renderer already supports {{mode}} (resolved to "dark" / "light" via default_mode, see Scripts/python/src/theming/lib/renderer.py), so VSCode now picks the correct light/dark defaults.
• Added four palette-aware keys so blockquote / inline-code / preformatted blocks match the rest of the theme instead of falling back to VSCode defaults:
  • textBlockQuote.background → surface_container_low
  • textBlockQuote.border → outline
  • textCodeBlock.background → surface_container
  • textPreformat.foreground → on_surface

Testing

• Tested on niri
• Tested on Hyprland
• Tested on sway
• Tested with different bar positions and density settings
• Tested at different interface scaling values
• Tested with multiple monitors (if applicable)

Verified locally by applying the equivalent patch via a user template post-hook against both a wallpaper-derived light palette and the default Noctalia light scheme, then reloading the VSCode window and opening a markdown preview.

Screenshots / Videos

Annotated Markdown Kitchen Sink preview — green highlights inline blockquote, red highlights a long blockquote. All screenshots are light mode; dark mode is unchanged.

Before — wallpaper-derived light palette:

Before — default Noctalia light scheme:

After — wallpaper-derived light palette:

After — default Noctalia light scheme:

Checklist

• Code follows project style guidelines
• Self-reviewed my code
• No new warnings or errors
• Documentation or comments updated (if relevant) — N/A

Additional Notes

Dark mode is unchanged (since {{mode}} resolves to "dark" there). Only the four new color keys and the type field differ; no token colors or other UI surfaces are touched.