fix: make Target canonical and place Roadmap second

research/ai-adoption/strategy-model.json

@@ -28,11 +28,6 @@
     ]
   },
   "pages": [
-    {
-      "id": "index",
-      "title": "AI adoption strategy",
-      "purpose": "Govern skills first; outcomes before activity; explicit target status."
-    },
     {
       "id": "target-operating-model",
       "title": "Target operating model",