First fleet baseline wave: 7/7 nodes + STATUS + registry digest pin (#826)

- data/baselines/: cpu-bench bundles for tsys1/3/4/5/6/7/9 (2026-09-06)
  headliners: tsys9 1.20M k/s AES-1t > tsys3 986k > tsys4 614k > tsys1 582k
  > tsys5 462k (governor=none, E5620) > tsys7 401k > tsys6 176k
- monitoring/README: toolbox image digest pinned
  (git.knownelement.com/knel/knelerf-toolbox:v1 @ sha256:3bb22bdb...)
- STATUS.md: pointer to #826 program state

Redmine: https://projects.knownelement.com/issues/826

STATUS.md

@@ -1,4 +1,6 @@
 # STATUS.md
 
 > Operations status lives on Discourse: https://community.turnsys.com/t/297
-> This file is a pointer stub. Active ticket: [#769](https://projects.knownelement.com/issues/769) (repo split).
+> This file is a pointer stub.
+
+- [#826](https://projects.knownelement.com/issues/826) — KNELPerf v2 program · monitoring fleet-wide 09-06 (CR 25), toolbox on 7/7 nodes, first baselines in `data/baselines/` · next: placement scorecard + day/night UAT