A closed z.enum inside the strict get_providers payload meant any provider
type added daemon-side failed the entire WS envelope parse on older clients,
silently dropping the response and timing out the settings sheet. Make
providerType an open string on the wire; the daemon's config schema keeps the
closed set and setProvider rejects unknown types with a clear error. Also
correct the paseoAgentConfig COMPAT version, the provider CLI descriptions,
and the stale no-app-UI doc claim.
a410617d4a