The replacement login strings are defined and exported with no call site.
Three replacement messages explaining why artifacts need a claude.ai login are defined, covering the plain case, a remote session authenticating through the machine that launched it, and a credential injected by the host environment that takes precedence and cannot be changed. Only the definitions and the module export table appear in this build, with no call site, so the old single message is still what you see.
- A fourth builder interpolates the name of the competing credential source into the message.
Artifacts need a claude.ai login, but this session authenticates with a credential injected by its host environment, which takes precedence and cannot be changed here. Start a session that is signed in to claude.ai to publish or read artifacts.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.