DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
The main migration item is for administrators or wrapper authors: update disableAgentView / CLAUDE_CODE_DISABLE_AGENT_VIEW if you previously depended on the older background-agents fleet setting name. For normal interactive users, this release is backward-compatible.