solid-ui themes foundation

[bourgeoa]

No description provided.

[Copilot]

Pull request overview

This PR introduces CSS custom properties (CSS variables) for theming support in the folder pane, establishing a foundation for the solid-ui themes system. The changes replace hardcoded CSS values with theme-aware CSS variables that include appropriate fallback values.

Changes:

• Replaced hardcoded CSS values with CSS custom properties (variables) following the --sui-* naming convention
• Updated peer dependency from solid-ui@^3.0.0 to solid-ui@^3.0.1-11be53b to support the new theme variables

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/folderPane.ts	Introduces CSS variables for spacing, colors, and sizing properties with fallback values to maintain backward compatibility
package.json	Updates solid-ui peer dependency to pre-release version that includes theme variable support
package-lock.json	Updates lockfile entries to reflect the new solid-ui and solid-logic peer dependency versions

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[Copilot]

Using a spacing CSS variable (--sui-space-2xl) for a width property is semantically inconsistent. The min-width property defines a minimum dimension/size, not spacing. Consider using a size-specific variable like --sui-size-2xl or --sui-width-sm instead to maintain clear semantic separation between spacing (margins, padding, gaps) and sizing (width, height) properties in the theme system.

Suggested change

	tr.firstChild.style.cssText += 'min-width: var(--sui-space-2xl, 3em);'
	tr.firstChild.style.cssText += 'min-width: var(--sui-size-2xl, 3em);'