docs: add question-gen v3 construction-paradigm design and phase1 plan

Complete v3 planning: construction-first paradigm (frame-perception grounded fact extraction + 4-family independent judges + 6-layer verification + QuestionUnit contract), adversarial audit, paradigm-shift finding, real-data spike validation, logging schema, and phase1 contract implementation plan.

research-wiki/graph/edges.json

@@ -190,6 +190,11 @@
       "id": "plan:adversarial-question-gen-phaseB",
       "label": "Adversarial Question-Gen Phase B",
       "type": "plan"
+    },
+    {
+      "id": "plan:question-gen-v3-phase1-contract",
+      "label": "question-gen v3 Phase1 契约地基实现计划",
+      "type": "plan"
     }
   ],
   "links": [
@@ -360,6 +365,20 @@
       "relation": "implements",
       "evidence": "Phase B 实现计划",
       "added": "2026-07-14T21:09:48.115521+00:00"
+    },
+    {
+      "source": "schema:v3-question-gen-logging",
+      "target": "design:question-gen-v3-construction-paradigm",
+      "relation": "implements",
+      "evidence": "v3 出题运行时数据 schema 实现设计 §12.1",
+      "added": "2026-07-15T09:18:41.713855+00:00"
+    },
+    {
+      "source": "plan:question-gen-v3-phase1-contract",
+      "target": "design:question-gen-v3-construction-paradigm",
+      "relation": "implements",
+      "evidence": "Phase1 契约地基",
+      "added": "2026-07-15T09:22:08.800078+00:00"
     }
   ]
 }