Canopus-Conical-Domain-Redirector

This plugin ensures a multisite network serves all frontend traffic from a single, primary domain. It is designed for administrators managing sites with multiple domain aliases who need to consolidate their site's public identity for consistency and search engine optimization.

• Canonical domain enforcement: Automatically redirects all frontend visits from any alias domain to the predefined primary domain.
• Administrative access preserved: Redirects are skipped for admin areas, AJAX requests, and command-line processes to avoid breaking backend functionality.
• SEO-friendly 301 redirects: Uses permanent redirects to pass search engine ranking signals to the canonical domain.
• Lightweight MU plugin: Installs as a must-use plugin in the mu-plugins directory, running network-wide without requiring activation on individual sites.
• Full URI preservation: Maintains the original page path and query parameters during the redirect, ensuring users and search engines land on the correct content.