QML TextInput has no system edit menu; a RightButton overlay opens a
CardMenu with Cut / Copy / Paste / Select all. Menu cut/paste are
programmatic edits that never emit textEdited, so the live-query hook is
factored out and re-run after them. New scissors/clipboard glyphs baked
across the six tints; Cut and Paste msgids added to the seven non-English
locales.
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