Release v0.17.2

What's Changed

• fix(runner): prevent ghost sessions from orphaned spawn webhooks by @BigKunLun in #440
• fix(hub): refresh session activity on completed turns by @Liu-KM in #524
• feat(hub): add ServerChan task notifications by @xiaobaifly7 in #515
• fix(hub): mark queued sessions thinking before Codex task_start by @xiaobaifly7 in #514
• feat: workspace browser with --workspace-root opt-in scoping by @everettjf in #526

New Contributors

• @BigKunLun made their first contribution in #440
• @xiaobaifly7 made their first contribution in #515
• @everettjf made their first contribution in #526

Full Changelog: v0.17.1...v0.17.2