Under the hood
Artifact-editor follow-up delivery now enforces a length cap and a roughly 20-minute time value
What
The code path that delivers a thread follow-up message directly to a running artifact editor (enabled via the CLAUDE_CODE_EDITOR_CODELIVERY environment variable) now enforces a maximum length of 2048 characters on the follow-up URL it parses, and uses a new constant of 1,200,000 milliseconds (about 20 minutes) elsewhere in the same flow.
Why
The length cap guards against malformed or oversized follow-up URLs being processed; the roughly 20-minute value likely bounds how long the direct-delivery path stays valid, though the finding doesn't say exactly what it times out.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
What the 20-minute constant is actually used to time is not specified in the evidence.