🎨 Palette: Add light/dark mode toggle to documentation

[igor-holt]

🎨 Palette: Documentation Accessibility Improvement

💡 What: Added a light/dark mode toggle to the documentation site configuration (mkdocs.yml).

🎯 Why: Previously, the documentation was locked to dark mode (slate). This change allows users to switch between light and dark modes based on their preference and environment, improving readability and accessibility.

📸 Before/After:

• Before: Site was always in dark mode.
• After: Site has a toggle button in the header to switch between light and dark modes.

♿ Accessibility:

• Provides choice for users with visual impairments or astigmatism who may find high contrast dark mode difficult to read.
• Uses standard accessible icons with descriptive tooltips ("Switch to dark mode", "Switch to light mode").

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PR created automatically by Jules for task 3779802801518276903 started by @igor-holt

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[gemini-code-assist]

Summary of Changes

Hello @igor-holt, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the accessibility and user experience of the documentation site by introducing a light/dark mode toggle. This change empowers users to select their preferred viewing theme, improving readability and accommodating diverse visual needs, rather than being restricted to a single dark mode.

Highlights

• Documentation Accessibility: Implemented a light/dark mode toggle in the documentation site, moving from a dark-mode-only setup to a user-selectable theme.
• Configuration Update: Modified mkdocs.yml to define both 'default' (light) and 'slate' (dark) color schemes, each with specific toggle icons and descriptive names.

Changelog

• .Jules/palette.md
  • Added a new entry documenting the learning and action taken regarding documentation accessibility and mkdocs.yml configuration for dual-scheme support.
• mkdocs.yml
  • Configured the palette section to define two distinct color schemes: 'default' for light mode and 'slate' for dark mode.
  • Assigned specific Material Design icons (material/brightness-7 and material/brightness-4) and descriptive names ("Switch to dark mode", "Switch to light mode") for the theme toggles.

Activity

• PR created automatically by Jules for task 3779802801518276903, initiated by @igor-holt.

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[gemini-code-assist]

Code Review

This pull request adds a light/dark mode toggle to the documentation, which is a great step for accessibility. However, I've found a critical accessibility issue with the new light mode: the color contrast for links is too low, failing WCAG standards. I've left a comment with details on this in mkdocs.yml. Additionally, I've suggested an improvement to the new .Jules/palette.md file to incorporate contrast checking into the team's process to prevent similar issues in the future.

[gemini-code-assist]

This change introduces a critical accessibility issue in light mode. The link color, defined as --color-extropic-orange (#ff6a13) in custom_css.css, has a contrast ratio of only 2.65:1 against a white background. This fails the WCAG AA requirement of 4.5:1 for normal text.

Since this pull request's goal is to improve accessibility, this color contrast regression must be addressed. While the issue is in custom_css.css, it is surfaced by enabling the light theme here. Please update the link color for the light theme to meet accessibility standards.

[gemini-code-assist]

To make this action item more robust and prevent future accessibility issues like the one discovered in this PR (low contrast links in light mode), I suggest expanding it to include color contrast verification.

Suggested change

	**Action:** Always verify `mkdocs.yml` configuration to ensure dual-scheme support is enabled with clear toggle icons.
	**Action:** Always verify `mkdocs.yml` configuration to ensure dual-scheme support is enabled with clear toggle icons and that color contrast for text and interactive elements meets accessibility standards (e.g., WCAG AA) in both schemes.