docs: register llm_calls telemetry schema in wiki

research-wiki/index.md

@@ -1,6 +1,6 @@
 # Research Wiki 索引
 
-> 自动生成，更新时间：2026-07-20 10:18 UTC
+> 自动生成，更新时间：2026-07-20 11:11 UTC
 
 ## design (2)
 - [2026-07-20-m1-core-design](designs/2026-07-20-m1-core-design.md) `design:2026-07-20-m1-core-design`
@@ -9,3 +9,9 @@
 ## plan (2)
 - [2026-07-20-m1-core-plan](plans/2026-07-20-m1-core-plan.md) `plan:2026-07-20-m1-core-plan`
 - [M1 核心里程碑实现计划](plans/m1-core-plan.md) `plan:m1-core-plan`
+
+## schema (1)
+- [表结构: llm_calls(遥测 18 字段)](schemas/llm-calls.md) `schema:llm-calls`
+
+## metric (1)
+- [每次调用必录覆盖率(含缓存命中/失败/取消)](metrics/call-telemetry-coverage.md) `metric:call-telemetry-coverage`