feat(skill): move catalogs into session prefixes

scripts/gen-doc-graphs.ts

@@ -71,6 +71,7 @@ const GROUP_ORDER = [
   'core',
   'bash',
   'fs',
+  'skill',
   'compact',
   'subagent',
   'web',
@@ -138,9 +139,10 @@ const SERVICE_ROLES: ServiceRole[] = [
     key: 'skills',
     pkg: 'skill',
     title: 'Skill provider registry',
-    mode: 'core',
-    consumers: ['agent-core', 'skill-local', 'tool-skill'],
-    note: 'Merges provider skill catalogs, injects request-time listings, and serves full skill bodies to the skill tool.',
+    mode: 'seam',
+    implementations: ['skill-local'],
+    consumers: ['tool-skill'],
+    note: 'Merges provider skill catalogs; tool-skill renders the session-prefix catalog and loads complete skill bodies.',
   },
   {
     key: 'agents',