2026.01.27-4-rc1

<aside> ⚠️

This release has a breaking change.

1. You will need to install pgvector plugin before migration. Read more.

2. This release also introduces a new webserver to support websockets. This requires setting up USE_HYPERCORN=true as an env variable for the web pod. Only applicable if using Runbooks.

</aside>

megacontainer: sha256:bb06e1eae2403dc9ed677e781015524ced9e78aa761f65f9ee8c1344314dda01 frontend: sha256:781da3cefbea1a8bf0fccdd04593c3affe8beed72ceae7bb263a7fd595dc313b mergeit: sha256:f1bda54b829dc6808eae26fed1bee00c76cc8719c3f31797e3138cc81c97fdd4

MergeQueue

• Move large affected targets ingestion to background task
  • Note: Now the API returns 202 instead of 200 for large targets list
• Show full name over hash for deleted user in audit trail
• Stacked PRs: Exclude displaying the closed PRs in Chrome Extension
• ChangeSets: Redirect old pages to the new ones

Runbooks

• New feature: Revert step(s)
• Task queuing for all messages, agent executions and revisions
• Ability to delete steps
• Reduce GitHub API usage
• Fix Runbooks MCP routing
• Failure handling for Sandbox connections
• Remove claude attribution from revision commit messages
• Fix bug with saving Runbooks without steps

Releases

• Fix a bug with cherry-pick popup release list
• Fix ordering of stacked PRs