With the reply language on auto, the sentences the host writes in a chat
used the language detected from the sender, and the interface language
of the owner only when a server hook supplied it. No hook was wired, so
the interface language was never used.
The page of a connector add-on now sends its interface language with
each save (ui_language). The binding keeps it, so every frontend of a
cluster knows it. With auto, the host speaks that language when its
catalog has it, and reads the language of the sender only when the
owner's language is unknown or not in the catalog. A save without the
field keeps the stored value, and a value that is not a language tag is
ignored. A fixed reply language still wins.
The label of the Automatic option says what it does now, in all nine
languages of the page.
Assisted-by: Claude:claude-sonnet-5-5
Ettore Di Giacinto
27556acbba