Movies and Series: Enter adds, a no longer does

The status bar only ever named Enter, while the hint for searching
releases of a title not in the library said (a). Enter is now the one
key for adding, and the hint says Enter.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/ui/discover_test.go

@@ -128,3 +128,26 @@ func TestListNumbersAreRightAligned(t *testing.T) {
 		t.Errorf("after resize: numbers end in columns %v", e)
 	}
 }
+
+func TestEnterAddsAndAIsAnOrdinaryKey(t *testing.T) {
+	a := newTestApp(t)
+	v := a.searches[0]
+	v.setResults([]result{movieResult{Movie: radarr.Movie{Title: "Dune", Year: 2021, TMDBID: 1}}})
+	// a is no longer a key of the list: it goes on to the list (which ignores it).
+	if got := v.list.GetInputCapture()(tcell.NewEventKey(tcell.KeyRune, 'a', 0)); got == nil {
+		t.Error("a is still taken by the list")
+	}
+	// The hint for releases of a title not in the library names Enter.
+	v.interactive(0)
+	if msg := plainText(a.status.GetText(false)) + toastText(a); !strings.Contains(msg, "first (Enter)") {
+		t.Errorf("hint: %q", msg)
+	}
+}
+
+func toastText(a *App) string {
+	var b strings.Builder
+	for _, t := range a.toasts {
+		b.WriteString(t.text)
+	}
+	return b.String()
+}