feat(brain-plugins): enable skill-creator + claude-code-setup in settings-fragment

Close Phase 0 install drift (К3) — brain settings-fragment now reflects
the actual state of ~/.claude/settings.json after Phase 0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

user-level-files/settings-fragment.json

@@ -3,7 +3,9 @@
     "ui-ux-pro-max@ui-ux-pro-max-skill": true,
     "claude-md-management@claude-plugins-official": true,
     "frontend-design@claude-plugins-official": true,
-    "superpowers@superpowers-dev": true
+    "superpowers@superpowers-dev": true,
+    "skill-creator@claude-plugins-official": true,
+    "claude-code-setup@claude-plugins-official": true
   },
   "permissions": {
     "allow": [