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

NIP fixes:
- RelayMembers (13534): use NIP-43 `member` tags (not `p`) and set the required
  NIP-70 `-` protected tag.
- Profile (kind 0): remove display-name support entirely (getter, setter, display()
  fallback, and the search weight).
- Comment (1111): A/a tags now carry a real address, not the event id.
- BlossomServerList (10063): normalize server URLs with normalizeUrl (HTTP), not
  normalizeRelayUrl (which forced wss://).
- HandlerRecommendation (31989): fix inverted removeRecommendation filter; add
  setSupportedKind()/supportedKind() for the NIP-89 d-tag.
- Report (1984): place the report-type string on the e tag (note reports) or p tag
  (profile reports); always emit the p tag.

Docs/skills:
- Add @welshman/domain docs (docs/domain/) and the welshman-domain skill.
- Prune @welshman/util docs/skill of the moved Profile/List/Handler/Encryptable
  helpers; register domain in the sidebar, index, and skills README.
- Apply accuracy fixes to the @welshman/app docs/skill.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BsMjvv7krpZeHK1Njeneru

packages/domain/src/kinds/BlossomServerList.ts

@@ -1,5 +1,5 @@
-import {uniq, nthEq} from "@welshman/lib"
-import {BLOSSOM_SERVERS, getTagValues, normalizeRelayUrl} from "@welshman/util"
+import {uniq, nthEq, normalizeUrl} from "@welshman/lib"
+import {BLOSSOM_SERVERS, getTagValues} from "@welshman/util"
 import {ListReader} from "../ListReader.js"
 import {ListBuilder} from "../ListBuilder.js"
 
@@ -8,11 +8,11 @@ export class BlossomServerList extends ListReader {
   readonly kind = BLOSSOM_SERVERS
 
   urls() {
-    return uniq(getTagValues("server", this.tags()).map(normalizeRelayUrl))
+    return uniq(getTagValues("server", this.tags()).map(normalizeUrl))
   }
 
   includes(url: string) {
-    return this.urls().includes(normalizeRelayUrl(url))
+    return this.urls().includes(normalizeUrl(url))
   }
 
   builder() {
@@ -24,16 +24,16 @@ export class BlossomServerListBuilder extends ListBuilder<BlossomServerList> {
   readonly kind = BLOSSOM_SERVERS
 
   addUrl(url: string) {
-    return this.addPublic(["server", normalizeRelayUrl(url)])
+    return this.addPublic(["server", normalizeUrl(url)])
   }
 
   removeUrl(url: string) {
-    return this.drop(nthEq(1, normalizeRelayUrl(url)))
+    return this.drop(nthEq(1, normalizeUrl(url)))
   }
 
   setUrls(urls: string[]) {
     this.clear()
 
-    return this.addPublic(...urls.map(url => ["server", normalizeRelayUrl(url)]))
+    return this.addPublic(...urls.map(url => ["server", normalizeUrl(url)]))
   }
 }

packages/domain/src/kinds/Comment.ts

@@ -1,5 +1,5 @@
 import {first} from "@welshman/lib"
-import {COMMENT, Address, getAddress, getTagValue, isReplaceableKind} from "@welshman/util"
+import {COMMENT, Address, getTagValue} from "@welshman/util"
 import type {TrustedEvent} from "@welshman/util"
 import type {ISigner} from "@welshman/signer"
 import {EventReader} from "../EventReader.js"
@@ -68,7 +68,7 @@ export class CommentBuilder extends EventBuilder<Comment> {
     this.rootTags = [["K", String(kind)], ["E", id], ["P", pubkey]]
 
     if (identifier) {
-      this.rootTags.push(["A", id])
+      this.rootTags.push(["A", new Address(kind, pubkey, identifier).toString()])
     }
 
     return this
@@ -78,7 +78,7 @@ export class CommentBuilder extends EventBuilder<Comment> {
     this.parentTags = [["k", String(kind)], ["e", id], ["p", pubkey]]
 
     if (identifier) {
-      this.parentTags.push(["a", id])
+      this.parentTags.push(["a", new Address(kind, pubkey, identifier).toString()])
     }
 
     return this

packages/domain/src/kinds/HandlerRecommendation.ts

@@ -1,4 +1,4 @@
-import {nthEq, last} from "@welshman/lib"
+import {nthNe, last} from "@welshman/lib"
 import {HANDLER_RECOMMENDATION, getAddressTags, getAddressTagValues} from "@welshman/util"
 import {EventReader} from "../EventReader.js"
 import {EventBuilder} from "../EventBuilder.js"
@@ -22,6 +22,11 @@ export class HandlerRecommendation extends EventReader {
     return tag?.[1]
   }
 
+  // NIP-89: the `d` tag is the event-kind this recommendation applies to.
+  supportedKind() {
+    return this.identifier()
+  }
+
   builder() {
     return new HandlerRecommendationBuilder(this)
   }
@@ -38,6 +43,14 @@ export class HandlerRecommendationBuilder extends EventBuilder<HandlerRecommenda
     this.addressTags = this.consumeTags("a")
   }
 
+  // NIP-89: set the `d` tag to the event-kind being recommended for, so the
+  // standard {kinds:[31989], "#d":[kind]} query resolves.
+  setSupportedKind(kind: number) {
+    this.setIdentifier(String(kind))
+
+    return this
+  }
+
   addRecommendation(address: string, relay?: string, platform?: string) {
     if (!this.addressTags.some(t => t[1] === address)) {
       this.addressTags = [...this.addressTags, ["a", address, relay || "", platform || ""]]
@@ -47,7 +60,7 @@ export class HandlerRecommendationBuilder extends EventBuilder<HandlerRecommenda
   }
 
   removeRecommendation(address: string) {
-    this.addressTags = this.addressTags.filter(nthEq(1, address))
+    this.addressTags = this.addressTags.filter(nthNe(1, address))
 
     return this
   }

packages/domain/src/kinds/Profile.ts

@@ -41,10 +41,6 @@ export class Profile extends EventReader {
     return this.values.name
   }
 
-  displayName(): Maybe<string> {
-    return this.values.display_name
-  }
-
   nip05(): Maybe<string> {
     return this.values.nip05
   }
@@ -74,10 +70,6 @@ export class Profile extends EventReader {
 
     if (name) return ellipsize(name, 60).trim()
 
-    const displayName= this.displayName()
-
-    if (displayName) return ellipsize(displayName, 60).trim()
-
     return displayPubkey(this.event.pubkey).trim() || fallback.trim()
   }
 
@@ -107,12 +99,6 @@ export class ProfileBuilder extends EventBuilder<Profile> {
     return this
   }
 
-  setDisplayName(displayName: string) {
-    this.values.displayName = displayName
-
-    return this
-  }
-
   setNip05(nip05: string) {
     this.values.nip05 = nip05
 

packages/domain/src/kinds/RelayMembers.ts

@@ -1,14 +1,15 @@
 import {uniq, nth, nthNe, uniqBy} from "@welshman/lib"
-import {RELAY_MEMBERS, getPubkeyTagValues} from "@welshman/util"
+import {RELAY_MEMBERS, getTagValues} from "@welshman/util"
 import {EventReader} from "../EventReader.js"
 import {EventBuilder} from "../EventBuilder.js"
 
-// Flotilla kind-13534 relay/space member-list snapshot.
+// Flotilla kind-13534 relay/space member-list snapshot. Members are carried in
+// NIP-43 `member` tags, and the event is NIP-70 protected (`-`).
 export class RelayMembers extends EventReader {
   readonly kind = RELAY_MEMBERS
 
   pubkeys() {
-    return uniq(getPubkeyTagValues(this.event.tags))
+    return uniq(getTagValues("member", this.event.tags))
   }
 
   isMember(pubkey: string) {
@@ -28,11 +29,14 @@ export class RelayMembersBuilder extends EventBuilder<RelayMembers> {
   constructor(readonly reader?: RelayMembers) {
     super(reader)
 
-    this.pubkeyTags = uniqBy(nth(1), this.consumeTags("p"))
+    this.pubkeyTags = uniqBy(nth(1), this.consumeTags("member"))
+
+    // NIP-43 requires kind-13534 member lists to be NIP-70 protected.
+    this.setProtected(true)
   }
 
   addPubkey(pubkey: string) {
-    this.pubkeyTags = uniqBy(nth(1), [...this.pubkeyTags, ["p", pubkey]])
+    this.pubkeyTags = uniqBy(nth(1), [...this.pubkeyTags, ["member", pubkey]])
 
     return this
   }

packages/domain/src/kinds/Report.ts

@@ -16,7 +16,9 @@ export class Report extends EventReader {
   }
 
   reason() {
-    return getTag("e", this.event.tags)?.[2]
+    // NIP-56: the report-type string is the 3rd entry of the reported tag — the
+    // `e` tag for note reports, or the `p` tag for profile-only reports.
+    return getTag("e", this.event.tags)?.[2] ?? getTag("p", this.event.tags)?.[2]
   }
 
   builder() {
@@ -39,7 +41,7 @@ export class ReportBuilder extends EventBuilder<Report> {
 
     this.reportedPubkey = p?.[1]
     this.eventId = e?.[1]
-    this.reason = e?.[2]
+    this.reason = e?.[2] ?? p?.[2]
   }
 
   setReportedPubkey(reportedPubkey: string) {
@@ -63,8 +65,15 @@ export class ReportBuilder extends EventBuilder<Report> {
   protected buildTags() {
     const tags: string[][] = []
 
+    // NIP-56: a `p` tag referencing the reported pubkey is mandatory. The
+    // report-type string goes on the reported object — the `e` tag for note
+    // reports, otherwise the `p` tag for profile-only reports.
     if (this.reportedPubkey) {
-      tags.push(["p", this.reportedPubkey])
+      tags.push(
+        this.eventId
+          ? ["p", this.reportedPubkey]
+          : ["p", this.reportedPubkey, ...(this.reason ? [this.reason] : [])],
+      )
     }
 
     if (this.eventId) {