Fix NIP conformance in domain kinds; add domain docs/skill

docs/util/index.md

@@ -2,20 +2,20 @@
 
 [![version](https://badgen.net/npm/v/@welshman/util)](https://npmjs.com/package/@welshman/util)
 
-A utility package for Nostr application development, providing essential tools and types for working with Nostr events, addresses, profiles, and more.
+A utility package for Nostr application development, providing essential tools and types for working with Nostr events, addresses, filters, tags, and more.
 
 ## What's Included
 
 - **Event Management**: Create, validate, and process Nostr events
 - **Repository**: In-memory event storage with querying and indexing
 - **Filters**: Advanced event filtering and subscription management
-- **Profiles**: User profile handling and formatting
-- **Lists**: Public and private list management
 - **Zaps**: Lightning Network payment integration
 - **Tags**: Comprehensive tag parsing and manipulation
 - **Addresses**: NIP-19 address handling
 - **Relays**: Relay URL handling, event dispatching and in-memory storage
 
+> Note: profiles, lists, handlers, rooms, and event Reader/Builder helpers now live in [@welshman/domain](/domain/).
+
 ## Installation
 
 ```