fix(registry): refresh recorded hashes after HYP-S006 edit

The hypatia-rules spec's source_hash is sha256(git ls-files -s hypatia-rules/),
so editing hypatia-rules/registry-staleness.a2ml changes it. The registry had
been regenerated BEFORE that edit was staged, leaving the recorded hash stale —
which registry-verify.yml (--check) correctly caught. Regenerate after the edit
is committed so the recorded hash matches; `--check` is green again.

Author: claude

.machine_readable/REGISTRY.a2ml

@@ -270,7 +270,7 @@ name = "Standards Hypatia Rules"
 stream = "integration"
 home = "hypatia-rules/"
 canonical_doc = "hypatia-rules/README.adoc"
-source_hash = "sha256:a63e95c5e43ced2ee13c58014175da156c71ab731f01449e3a61b3e2f33bbe52"
+source_hash = "sha256:797f42c3ac24cf610e1e0da0e9e019f3f0dce527d1f80857ab2adb85741159d3"
 route = "the dogfooding rules that scan THIS repo (incl. drift detection)"
 
 [[spec]]