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_ticker_symbol_handling.py

@@ -2,7 +2,7 @@ import unittest
 
 import pytest
 
-from cli.utils import normalize_ticker_symbol
+from cli.prompts import normalize_ticker_symbol
 from tradingagents.agents.context import build_instrument_context
 
 
@@ -19,10 +19,10 @@ class TickerSymbolHandlingTests(unittest.TestCase):
     def test_single_get_ticker_no_shadow(self):
         # Regression: cli/main.py had a duplicate get_ticker with an empty
         # questionary prompt (rendered as a bare "?") that shadowed the
-        # descriptive one in cli/utils. Keep a single canonical definition.
+        # descriptive one in cli/prompts. Keep a single canonical definition.
         import cli.main
-        import cli.utils
-        self.assertIs(cli.main.get_ticker, cli.utils.get_ticker)
+        import cli.prompts
+        self.assertIs(cli.main.get_ticker, cli.prompts.get_ticker)
 
 
 if __name__ == "__main__":