docs(plans): add Spec-3 question-gen-v2 implementation plan

9 tasks: type extension → postprocess → families → sampler_v2 →
generator_v2 → gates → run_store → pipeline_v2 → CLI integration.
Includes structured-logging schemas/metrics and Codex review revisions.

research-wiki/graph/edges.json

@@ -110,6 +110,41 @@
       "id": "plan:batch-tree-build-plan",
       "label": "Spec-2 建树批量并行实现计划",
       "type": "plan"
+    },
+    {
+      "id": "schema:question-gen-runs",
+      "label": "表结构: question_gen_runs（出题批次）",
+      "type": "schema"
+    },
+    {
+      "id": "schema:question-gen-items",
+      "label": "表结构: question_gen_items（逐题门判定）",
+      "type": "schema"
+    },
+    {
+      "id": "metric:qgen-gate-rejection-rate",
+      "label": "出题四门总拦截率",
+      "type": "metric"
+    },
+    {
+      "id": "metric:qgen-regen-convergence",
+      "label": "重出收敛率（3轮内过门）",
+      "type": "metric"
+    },
+    {
+      "id": "metric:qgen-acceptance-rate",
+      "label": "最终接受率",
+      "type": "metric"
+    },
+    {
+      "id": "metric:qgen-answer-uniformity",
+      "label": "答案位置分布均匀性",
+      "type": "metric"
+    },
+    {
+      "id": "plan:2026-07-11-question-gen-v2",
+      "label": "出题管线 v2 实现计划",
+      "type": "plan"
     }
   ],
   "links": [
@@ -182,6 +217,48 @@
       "relation": "implements",
       "evidence": "实现 Spec-2 四任务",
       "added": "2026-07-11T15:07:06.178664+00:00"
+    },
+    {
+      "source": "metric:qgen-gate-rejection-rate",
+      "target": "schema:question-gen-items",
+      "relation": "measures",
+      "evidence": "从 question_gen_items 表 attempt=1 行聚合计算",
+      "added": "2026-07-12T02:34:28.728290+00:00"
+    },
+    {
+      "source": "metric:qgen-regen-convergence",
+      "target": "schema:question-gen-items",
+      "relation": "measures",
+      "evidence": "按 slot_id 聚合 final_status 计算收敛率",
+      "added": "2026-07-12T02:34:29.858363+00:00"
+    },
+    {
+      "source": "metric:qgen-acceptance-rate",
+      "target": "schema:question-gen-runs",
+      "relation": "measures",
+      "evidence": "直接读取 runs 表 accepted/total_slots",
+      "added": "2026-07-12T02:34:30.989357+00:00"
+    },
+    {
+      "source": "schema:question-gen-runs",
+      "target": "design:2026-07-11-question-gen-v2",
+      "relation": "implements",
+      "evidence": "设计 §5 运行时数据要求",
+      "added": "2026-07-12T02:34:32.121484+00:00"
+    },
+    {
+      "source": "schema:question-gen-items",
+      "target": "design:2026-07-11-question-gen-v2",
+      "relation": "implements",
+      "evidence": "设计 §5 逐题可追溯要求",
+      "added": "2026-07-12T02:34:33.267570+00:00"
+    },
+    {
+      "source": "plan:2026-07-11-question-gen-v2",
+      "target": "design:2026-07-11-question-gen-v2",
+      "relation": "implements",
+      "evidence": "Spec-3 设计的实现计划",
+      "added": "2026-07-12T02:57:39.569968+00:00"
     }
   ]
 }