Filament v5's RichEditor is powerful out of the box. It is built on Tiptap, which means it's natively extensible, and it now supports *custom blocks out of the box . Here's how to extend it into a categorized, searchable block editor — without forking a single line of Filament core. With the release of Filament v5, one of the biggest improvements is the switch to a Tiptap-powered Rich Editor which means it's natively extensible, and crucially it now supports custom blocks out of the box via the RichContentCustomBlock base class. This is a huge deal. You can define structured, configurable content blocks that live inside the rich text flow — not bolted on as a separate Builder field, but inline with your prose. Each block gets a unique ID, a modal form schema, and preview/render methods. For most applications, this is more than enough.…