What
Claude Code gained several internal names that it uses when recording what happens:
model_catalog_startup_notice, added to a list of event names about the list of available models.prompt.compose, added to an allowed list next toprompt.section.loggedMcpImageBlank, a new marker in the worker client.setChromeTabGroupKey, a new way to set a key for Chrome tab groups.
Why
None of these changes anything you do directly. They are small signs of features still in progress.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
What reads these new names, and what they lead to, is not known.