Release beta 1.0.0 baseline

AGENTS.md

@@ -4,9 +4,11 @@ These rules are mandatory for every automated change in this repository.
 
 ## Versioning
 
-- Use `alpha X.Y.Z.MMDD`.
+- Use `beta X.Y.Z.MMDD` for current beta releases.
+- Python package versions use PEP 440 pre-release form, for example
+  `X.Y.Zb1+MMDD`.
 - Small changes increment only `Z`.
-- Do not move to a new minor version without explicit user approval.
+- Do not move to a new minor or stable version without explicit user approval.
 - Keep `VERSION`, root `pyproject.toml`, package versions, package
   `__version__`, `README.md`, and `CHANGELOG.md` synchronized.