describe keeps a remark with its option and allows a bare call

animation.remove's remark belongs to its `ids` option, so describe shows
it there instead of as a note on the whole command. A command with an
all-optional set of parameters is suggested as a bare id.

[claude-opus-5-5] on behalf of hoblin

apps/deckcraft-cli/tests/cli.rs

@@ -115,6 +115,9 @@ Run it with: deckcraft-cli run --cmd 'format.size={…}'
 #[test]
 fn describe_shows_alternative_sets_of_parameters() {
     assert!(stdout(&cli(&["describe", "slide.go"])).contains("Parameters:\n  either:\n    index\n  or:\n    id\n"));
+    let remove = stdout(&cli(&["describe", "animation.remove"]));
+    assert!(remove.contains("  or:\n    ids, optional  (all of the shapes' animations)\n"), "{remove}");
+    assert!(remove.ends_with("Run it with: deckcraft-cli run --cmd animation.remove\n") && !remove.contains("Note:"), "{remove}");
     assert!(stdout(&cli(&["describe", "shape.move"])).contains(
         "  either:
     dx, optional   pt (relative)