Mihdan: Only One Category

This plugin changes the category selection interface on the post editing page from checkboxes to radio buttons. It is designed for site owners who want to enforce single-category assignments for their posts, preventing accidental or intentional selection of multiple categories.

• Replaces checkboxes with radio buttons: The standard category meta box uses checkboxes that allow multiple selections. This plugin swaps them for radio buttons, so editors can choose only one category per post.
• Simplifies category management: By limiting posts to a single category, you reduce complexity in navigation and taxonomy-based queries. This is useful for blogs or news sites where each article belongs to a specific section.
• No configuration required: The plugin works immediately after activation. There are no settings pages or options to adjust—just install, activate, and the category meta box updates automatically.
• Lightweight and focused: The codebase is minimal, affecting only the category meta box on the post editor. It does not alter any other admin screens or front-end behavior.
• Compatible with standard post types: Works with the default post editor and category taxonomy. It does not modify custom taxonomies or custom post types unless they use the standard category meta box.