docs(wiki): 赛题生成工具设计 + 实现计划

design: synthesizer + factory + CLI 三模块架构
plan: 9 个 Task（前置修复 + synthesizer 4 步 + factory + CLI generate/calibrate + re-export）
calibrate: Fisher exact test 组合判定替代固定阈值

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

research-wiki/graph/edges.json

@@ -60,6 +60,16 @@
       "id": "design:paper-main-figure",
       "label": "论文主图：Self-Evolving Search Agent 推理训练闭环",
       "type": "design"
+    },
+    {
+      "id": "design:question-gen-synth",
+      "label": "赛题生成工具设计",
+      "type": "design"
+    },
+    {
+      "id": "plan:question-gen-synth",
+      "label": "赛题生成工具实现计划",
+      "type": "plan"
     }
   ],
   "links": [
@@ -104,6 +114,13 @@
       "relation": "implements",
       "evidence": "实现设计文档的三项改造：遥测加固+断点续跑+并发",
       "added": "2026-07-09T04:08:15.312470+00:00"
+    },
+    {
+      "source": "plan:question-gen-synth",
+      "target": "design:question-gen-synth",
+      "relation": "implements",
+      "evidence": "计划实现设计文档中定义的 synthesizer + factory + CLI 三模块",
+      "added": "2026-07-09T09:05:43.697644+00:00"
     }
   ]
 }