ClaudePersona::Error

Base for every failure this tool anticipates and can describe in a sentence: a persona that is not there, an MCP config that was never imported, a file that will not parse.

Descending from this is a claim that the message is fit to be the only thing a user sees, and CLI.guard turns it into exactly that — one line and a non-zero exit. Anything that does not descend from it is a defect, and should surface as a crash with a backtrace rather than be flattened into tidy prose that hides where it came from.