Benchmark registry & frozen versions

Benchmark registry & frozen versions

集合注册、用途说明（本体回归 / Agent 能力评估）、内容哈希锁定冻结版本；解冻需重新冻结产生新版本，全程留痕。实验执行时按冻结版本取用。

PRD refs

RSI-HAR-3..5（docs/PRD.md）；实验取用见 LAB-RUN-1

Roadmap

Phase 5

Status

Planned — this surface ships in a later phase; the routes are in place.