fix: show search instead of grouped/flat in the Sources help bar

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/ui/app/help.go

@@ -46,7 +46,7 @@ func (c contextHelp) ShortHelp() []key.Binding {
 	}
 	switch c.focus {
 	case paneSources:
-		b = append(b, k.Enter, k.Share, k.ShareMenu, k.Favourite, k.Favourites, k.Note, k.SourcesView, k.Filter)
+		b = append(b, k.Enter, k.Search, k.Share, k.ShareMenu, k.Favourite, k.Favourites, k.Note, k.Filter)
 	case paneContainers:
 		b = append(b, k.Enter, k.Share, k.ShareMenu, k.Favourite, k.Note, k.Open, k.Filter)
 	default:

internal/ui/app/testdata/TestGolden.golden

@@ -27,4 +27,4 @@
 │                               ││                                                                 │
 │                               ││                                                                 │
 ╰────────────────────── 1 of 3 ─╯╰─────────────────────────────────────────────────────────────────╯
- enter open • s copy link • S share… • f star • F favourites • n note • … • ? help • q quit
+ enter open • ctrl+s search • s copy link • S share… • f star • F favourites • … • ? help • q quit