The guide-search sheet and the TV rail's options button fell back to
English in every non-English locale: their six keys existed only as
empty strings in the sibling translation files.
Fill all 126 empty targets across the 21 locales and regenerate the
slang bindings. searchNoResults keeps its ${query} placeholder and each
locale's quote convention, and channelsSection uses the broadcast sense
of "channel" rather than the audio-channel word already used by
fileInfo.channels.
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