docs: add M3 OCR implementation plan and telemetry metric

research-wiki/index.md

@@ -1,6 +1,6 @@
 # Research Wiki 索引
 
-> 自动生成，更新时间：2026-07-22 01:37 UTC
+> 自动生成，更新时间：2026-07-22 02:09 UTC
 
 ## design (8)
 - [2026-07-20-m1-core-design](designs/2026-07-20-m1-core-design.md) `design:2026-07-20-m1-core-design`
@@ -21,16 +21,19 @@
 - [M2.5 验收: P6 同场景 58.1% → 98.96%](findings/m25-acceptance.md) `finding:m25-acceptance`
 - [P6 混合浸泡首跑基线与记分板三重伪击穿修复](findings/p6-soak-baseline.md) `finding:p6-soak-baseline`
 
-## plan (6)
+## plan (8)
 - [2026-07-20-m1-core-plan](plans/2026-07-20-m1-core-plan.md) `plan:2026-07-20-m1-core-plan`
 - [2026-07-20-m2-distributed-plan](plans/2026-07-20-m2-distributed-plan.md) `plan:2026-07-20-m2-distributed-plan`
 - [2026-07-21-m25-resilience-plan](plans/2026-07-21-m25-resilience-plan.md) `plan:2026-07-21-m25-resilience-plan`
+- [2026-07-21-m3-ocr-plan](plans/2026-07-21-m3-ocr-plan.md) `plan:2026-07-21-m3-ocr-plan`
 - [M1 核心里程碑实现计划](plans/m1-core-plan.md) `plan:m1-core-plan`
 - [M2 分布式实现计划](plans/m2-distributed.md) `plan:m2-distributed`
 - [M2.5 治理韧性实现计划](plans/m25-resilience.md) `plan:m25-resilience`
+- [M3 OCR 实现计划](plans/m3-ocr.md) `plan:m3-ocr`
 
 ## schema (1)
 - [表结构: llm_calls(遥测 18 字段)](schemas/llm-calls.md) `schema:llm-calls`
 
-## metric (1)
+## metric (2)
+- [OCR 治理调用成功率与错误分类分布](metrics/ocr-call-success.md) `metric:ocr-call-success`
 - [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`