fix(tui): finish the 1-9 rename in the fallback footer

The renderer's own FOOTER_KEYS table still said 'jump'. It is only reached when
the app layer supplies no footerKeys, so nothing visible was wrong, but a
fallback that contradicts the live footer is exactly the kind of drift that
turns into a bug report later.

src/tui/tui-render.ts

@@ -615,7 +615,7 @@ const FOOTER_KEYS: Record<string, (glyphs: TuiGlyphSet) => string> = {
     [
       `${g.updown} select`,
       `${g.enter} attach`,
-      '1-9 jump',
+      '1-9 switch',
       'y/n answer',
       'p prompt',
       'n new',