v0.140.0

What's Changed

• fix(console): composer model menu refetches a stale or empty schema on open by @mabry1985 in #2828
• feat(workflows): background runs, live per-step record, run history + retention, validate endpoint by @mabry1985 in #2829
• feat(studio): live run timeline, history, DAG lanes, edit-in-builder, gates, live validation by @mabry1985 in #2830
• feat(workflows): GA — workflows plugin enabled by default by @mabry1985 in #2831

Full Changelog: v0.139.0...v0.140.0