This plugin addresses a specific technical challenge for developers managing websites that require cross-site authentication. It is designed for administrators and developers who need to ensure their site's login cookies work correctly when embedded in third-party contexts, such as iframes or across different domains.

• Secure and SameSite Cookie Attributes: It overrides the standard wp_set_auth_cookie function to explicitly set the Secure flag and SameSite='None' attribute on authentication cookies, which is necessary for modern browser security policies.
• PHP 7.3+ Compatibility: The implementation relies on the setcookie function's options array syntax, which requires PHP version 7.3.0 or higher, ensuring a modern and standardized approach.
• Simple Installation: The plugin is distributed as a standard ZIP file that can be uploaded and activated directly through the admin dashboard's plugin installer, requiring no manual file editing.
• Targeted Functionality: It focuses solely on correcting the authentication cookie behavior without adding unrelated features, keeping the codebase minimal and purpose-driven.
• Cross-Site Login Support: By properly configuring the SameSite attribute, it enables user sessions to persist when the site is loaded in cross-origin scenarios, fixing common login failures in embedded applications.