New pull_model command streams Ollama /api/pull NDJSON over a Channel
(status lines + completed/total bytes). The wizard's model step gains a
'type any tag to pull' input: uninstalled models download in-app with
a progress bar instead of the old 'run ollama pull yourself' dead end.
The NDJSON line-loop is factored out of the chat streaming path and
shared.
itsamejms
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