fix(cli): atomic trace-consent updates and drop unused re-exports

- traces enable/disable now use update_user_data (file-locked atomic
  read-modify-write) instead of bare _load_user_data + _save_user_data —
  prevents data loss under concurrent CLI invocations.
- Drop unused _get_nested_value / _get_project_attribute re-exports from
  crewai_cli.utils and crewai.utilities.project_utils — no callers.
- Mark crewai.events.listeners.tracing.utils re-exports via __all__ so
  CodeQL recognizes _save_user_data, is_tracing_enabled, update_user_data
  (and the other tracing helpers defined in the file) as public API.

lib/cli/src/crewai_cli/cli.py

@@ -33,8 +33,8 @@ from crewai_cli.triggers.main import TriggersCommand
 from crewai_cli.update_crew import update_crew
 from crewai_cli.user_data import (
     _load_user_data,
-    _save_user_data,
     is_tracing_enabled,
+    update_user_data,
 )
 from crewai_cli.utils import build_env_with_all_tool_credentials, read_toml
 
@@ -794,11 +794,7 @@ def traces_enable() -> None:
 
     console = Console()
 
-    # Update user data to enable traces
-    user_data = _load_user_data()
-    user_data["trace_consent"] = True
-    user_data["first_execution_done"] = True
-    _save_user_data(user_data)
+    update_user_data({"trace_consent": True, "first_execution_done": True})
 
     panel = Panel(
         "✅ Trace consent recorded.\n\n"
@@ -820,11 +816,7 @@ def traces_disable() -> None:
 
     console = Console()
 
-    # Update user data to disable traces
-    user_data = _load_user_data()
-    user_data["trace_consent"] = False
-    user_data["first_execution_done"] = True
-    _save_user_data(user_data)
+    update_user_data({"trace_consent": False, "first_execution_done": True})
 
     panel = Panel(
         "❌ Trace collection has been disabled!\n\n"

lib/cli/src/crewai_cli/utils.py

@@ -7,8 +7,6 @@ from typing import Any
 
 import click
 from crewai_core.project import (
-    _get_nested_value as _get_nested_value,
-    _get_project_attribute as _get_project_attribute,
     get_project_description as get_project_description,
     get_project_name as get_project_name,
     get_project_version as get_project_version,