docs: register llm_calls telemetry schema in wiki

research-wiki/graph/edges.json

@@ -5,6 +5,16 @@
       "id": "plan:m1-core-plan",
       "label": "M1 核心里程碑实现计划",
       "type": "plan"
+    },
+    {
+      "id": "schema:llm-calls",
+      "label": "表结构: llm_calls(遥测 18 字段)",
+      "type": "schema"
+    },
+    {
+      "id": "metric:call-telemetry-coverage",
+      "label": "每次调用必录覆盖率(含缓存命中/失败/取消)",
+      "type": "metric"
     }
   ],
   "links": [
@@ -14,6 +24,20 @@
       "relation": "implements",
       "evidence": "plans/2026-07-20-m1-core-plan.md 实现 designs/2026-07-20-m1-core-design.md 冻结的全部签名",
       "added": "2026-07-20T10:18:41.339537+00:00"
+    },
+    {
+      "source": "metric:call-telemetry-coverage",
+      "target": "schema:llm-calls",
+      "relation": "measures",
+      "evidence": "遥测必录铁律: 一切调用路径落 llm_calls",
+      "added": "2026-07-20T11:11:46.302045+00:00"
+    },
+    {
+      "source": "schema:llm-calls",
+      "target": "design:m1-core-design",
+      "relation": "implements",
+      "evidence": "M1 设计 §4.4 冻结 18 字段",
+      "added": "2026-07-20T11:11:47.240466+00:00"
     }
   ]
 }