Add Dark Mode switcher to WordPress Admin Panel

[sardorwp]

Add native dark mode switcher to WP admin

WordPress admin has no built-in dark mode. The "WP Dark Mode" plugin has 100,000+ active installs — proving strong user demand.

Add a dark/light toggle in User Profile settings that:

• Respects OS-level prefers-color-scheme by default
• Saves preference per user in user meta

This reduces plugin dependency for a basic UX need that modern tools (GitHub, VS Code, Notion) already provide natively.