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- Create cross-platform subprocess utility with Windows shell=True support - Update all CLI commands to use new subprocess utility instead of direct subprocess.run() - Add comprehensive tests for Windows compatibility scenarios - Fixes #3522: Access denied errors on Windows CLI execution The core issue was that Windows with restrictive security policies blocks subprocess execution when shell=False (the default). Using shell=True on Windows allows commands to execute through the Windows shell, which typically has the necessary permissions. Files updated: - src/crewai/cli/subprocess_utils.py (new utility) - tests/cli/test_subprocess_utils.py (new tests) - All CLI files that use subprocess.run(): run_crew.py, kickoff_flow.py, install_crew.py, train_crew.py, evaluate_crew.py, replay_from_task.py, plot_flow.py, tools/main.py, git.py The solution maintains existing behavior on Unix-like systems while providing Windows compatibility through platform detection. Co-Authored-By: João <joao@crewai.com>