refactor(cli): move the live view to cli/display.py and the prompts to cli/prompts.py

- display.py holds the message buffer, layout, status tables and report panels, the analyst wall-time tracker (CLI-only, from graph/analyst_execution) and the one Console
- utils.py is renamed prompts.py, which is what it holds; its analyst list is ANALYST_CHOICES, apart from display's ANALYST_ORDER
- get_initial_analyst_node, a one-line helper with one caller, is inlined
- the wall-time tracker tests sit with the other display tests, and tests import cli.prompts as prompts

tests/test_cli_prefs.py

@@ -134,10 +134,10 @@ def test_selections_are_remembered_after_a_run(monkeypatch):
 def test_a_custom_language_is_remembered_without_breaking_the_next_run():
     """A free-text answer is not one of the menu's choices, and questionary
     rejects a default it cannot find, so offering it back would crash startup."""
-    from cli.utils import ask_output_language
+    from cli.prompts import ask_output_language
 
     save_last_run({"output_language": "Turkish"})
-    with mock.patch("cli.utils.questionary.select") as select:
+    with mock.patch("cli.prompts.questionary.select") as select:
         select.return_value.ask.return_value = "English"
         ask_output_language(load_last_run()["output_language"])
     assert select.call_args.kwargs["default"] is None