Claim checker for public texts (TypeSafe), measured manifest load times, corrected README timings

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+**Documentation checks.** `scripts/docs/check_claims.py` checks the numeric claims of public texts against the
+validation reports (code retrieves evidence, a TypeSafe System One model judges support). Its first run corrected the
+manifest loading times (Omni2.5 about 18 s on a Pi, now measured in `docs/validation/P9.md`) and a demo timing
+sentence in the README.
+
 **Packaging.** The distributions are now `simurgarray` and `simurgarray-core` (the name `simurg` is taken on
 PyPI); the `simurg` command and the `simurg` / `simurg_core` import names are unchanged. The conda recipe no longer pins
 the kernel package to the Python package's version (it required `simurg-core == 2.0.0` while the kernels are 1.1.0).