What does this release signal mean?

OpenAI published openai/codex rust-v0.143.0-alpha.21 (openai/codex). This release signal is evidence of what shipped, changed, or was packaged for users. High-signal details: minor Rust SDK alpha release · 0.143.0-alpha.21 Repository: openai/codex Tag: rust-v0.143.0-alpha.21 Published: 2026-06-25T04:40:38Z Prerelease: yes Release notes: Release 0.143.0-alpha.21. onlylabs links this event to 1 captured evidence page and 6 related release signals.