docs: add maintenance pool auto-supplement design

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

research-wiki/graph/edges.json

@@ -170,6 +170,11 @@
       "id": "plan:action-recognition-strategy",
       "label": "ActionRecognitionStrategy 特化实现计划 (Plan B)",
       "type": "plan"
+    },
+    {
+      "id": "design:maintenance-pool",
+      "label": "训练池 Maintenance 正确题自动补入机制",
+      "type": "design"
     }
   ],
   "links": [
@@ -312,6 +317,13 @@
       "relation": "implements",
       "evidence": "Plan B implements design §4: ActionRecognitionStrategy with 6 SubPatterns",
       "added": "2026-07-14T10:34:27.079088+00:00"
+    },
+    {
+      "source": "design:maintenance-pool",
+      "target": "design:task-type-strategy",
+      "relation": "extends",
+      "evidence": "maintenance pool supplements the per-category pool strategy to support SubPattern-targeted training",
+      "added": "2026-07-14T14:11:13.527027+00:00"
     }
   ]
 }