An enabled MCP or smarthome row with no backend returned ErrNotEnabled,
and actionAct reads ErrNotEnabled as "this is unknown, draft a
proposal". So a tool Kami had already approved, whose server happened to
be restarting, produced a second proposal row and an answer saying the
tool needs approval. The right answer is that the server is down.
ErrNotConnected carries that, and the act path maps it, ErrNoServer and
ErrToolGone to replies that say which of the three happened.
Found in review of #71.
kami
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