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/app/src/plugins/search.ts

@@ -84,7 +84,6 @@ export class Searches {
             keys: [
               "nip05",
               {name: "name", weight: 0.8},
-              {name: "display_name", weight: 0.5},
               {name: "about", weight: 0.3},
             ],
             threshold: 0.3,