Set main to the shipped stable version 2026.9.1 (root, apps, plugins, and
version-owned generated metadata via `pnpm release:prepare`), make the
`## 2026.9.1` changelog section identical to the tagged release branch, and
carry the native locale refresh that the release preflight requires.
Release: https://github.com/openclaw/openclaw/releases/tag/v2026.9.1
npm: openclaw@2026.9.1 (latest, beta); 89 @openclaw/* plugins at 2026.9.1.