Release v0.27.22

What's Changed

• fix(channels): include run IDs in lifecycle errors by @overlord-letta in #3183
• fix(sandbox): make the cross-agent shell sandbox opt-in, keep memory-subagent sandbox default-on by @cpacker in #3209
• chore: bump version to 0.27.22 by @github-actions[bot] in #3210

Full Changelog: v0.27.21...v0.27.22