OSATURA v0.1.0-alpha.4

Pre-release builds from CI. Unverified by people on Windows and macOS; see docs/LIMITATIONS.md. Licences: CLI AGPL-3.0-or-later, libraries MPL-2.0, docs CC-BY-4.0. Each file has a Sigstore signature (.sigstore.json) and a GitHub build-provenance attestation; see docs/VERIFY_DOWNLOADS.md. Code signing policy: https://github.com/chiuta/osatura/blob/main/CODE_SIGNING_POLICY.md . Privacy: the programs send nothing over the network unless you ask them to (PRIVACY.md). Uninstall: docs/UNINSTALL.md.