Lifecycle and versions

Stable is released and supported. Beta is usable but still completing compatibility or operational gates. Preview is not a stable public contract. Deprecated names its replacement and removal timing when known.

Harness support is separate. Verified requires a released version, dated evidence, and production-like read/write smoke. Provisional has official configuration evidence but incomplete Sift verification or a limitation. Generic is standards guidance, not a client compatibility claim.

Pin CLI and SDK artifacts in automation. Generated references state their artifact and source revision. See the public CLI changelog; operational incidents are routed through support until Sift publishes a public status page.