lib.App: Use parser in _add_arguments()

_add_arguments() adds the global options to self.__parser instead of
to the parser it receives. The two are the same object, because the
only caller passes self.__parser, so the change is not observable.

Use the parser parameter instead, so that the method honors its
argument the way Cmd.add_arguments() does, and so that the global
options can be shared with other parsers, e.g. the subcommand
parsers, without rewriting this method.

Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.84.2
Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/lib/App.py

@@ -46,28 +46,28 @@ def _get_current_event_loop() -> asyncio.AbstractEventLoop | None:
 class App:  # export
 
     def _add_arguments(self, parser: ArgumentParser) -> None:
-        self.__parser.add_argument(
+        parser.add_argument(
             '--log-flags',
             help = 'Log flags',
             default = self.__default_log_flags,
             type = parse_log_flags,
         )
-        self.__parser.add_argument(
+        parser.add_argument(
             '--log-level',
             help = 'Log level',
             default = self.__default_log_level,
             type = parse_log_level,
         )
-        self.__parser.add_argument(
+        parser.add_argument(
             '--log-file', help = 'Log file', default = self.__default_log_file
         )
-        self.__parser.add_argument(
+        parser.add_argument(
             '--backtrace',
             help = 'Show exception backtraces',
             action = 'store_true',
             default = self.__back_trace,
         )
-        self.__parser.add_argument(
+        parser.add_argument(
             '--write-profile',
             help = 'Profile code and store output to file',
             default = None,