v0.2.19

Fixed

• OpenCode Go models can be switched on again. Ticking one on the Go card
  turned the switch on and then turned it straight back off, with nothing
  saying why. Only the models enabled before this got in were usable, and
  there was no way to add another.

  LoomRouter checks a model before enabling it, by asking the gateway which of
  its three request formats that model answers on. Console Go turns away any
  request that does not carry a session id, so all three checks came back
  refused and LoomRouter concluded the model spoke none of them. The check now
  carries a session, the way ordinary requests already did.

• A model that cannot be switched on now says why. The switch still goes
  back, because the model really is not enabled, but the reason appears under
  the model list instead of the app going quiet. Worth having beyond the Go
  case above: a rate limit, an exhausted balance, or a model your provider
  does not actually serve all used to look the same as a broken switch.

• Visual assistance works with an OpenCode Go vision model. Sending an
  image while assistance pointed at a Go model failed the whole message, not
  just the image analysis, and for the same reason as the first entry: the
  request reached the gateway without a session. It now carries the one from
  your session, or its own when there is none to borrow.