Fix action triggering by using kitten output instead of remote control

The RC approach sent actions targeting the overlay window itself rather
than the underlying window. Switch to the standard kitten output pattern:
the Go kitten outputs the selected action definition via
KittenOutputSerializer, and handle_result in Python calls boss.combine()
with the correct target window after the overlay closes.

kittens/command_palette/main.py

@@ -57,6 +57,7 @@ def collect_keys_data(opts: Any) -> dict[str, Any]:
                     'key': key_repr,
                     'action': action_name,
                     'action_display': action_repr,
+                    'definition': d.definition or action_name,
                     'help': help_text,
                     'long_help': long_help,
                 })
@@ -98,13 +99,11 @@ def main(args: list[str]) -> None:
     raise SystemExit('This must be run as kitten command-palette')
 
 
-main.allow_remote_control = True  # type: ignore[attr-defined]
-main.remote_control_password = True  # type: ignore[attr-defined]
-
-
 @result_handler(has_ready_notification=True)
 def handle_result(args: list[str], data: dict[str, Any], target_window_id: int, boss: BossType) -> None:
-    pass
+    if data and 'action' in data:
+        w = boss.window_id_map.get(target_window_id)
+        boss.combine(data['action'], w)
 
 
 help_text = 'Browse and trigger keyboard shortcuts and actions'