feat(mma): Scaffold mma_exec.py with basic CLI structure

scripts/mma_exec.py

@@ -0,0 +1,25 @@
+import argparse
+
+def create_parser():
+    parser = argparse.ArgumentParser(description="MMA Execution Script")
+    parser.add_argument(
+        "--role", 
+        choices=['tier1', 'tier2', 'tier3', 'tier4'], 
+        required=True, 
+        help="The tier role to execute"
+    )
+    parser.add_argument(
+        "prompt", 
+        type=str, 
+        help="The prompt for the tier"
+    )
+    return parser
+
+def main():
+    parser = create_parser()
+    args = parser.parse_args()
+    print(f"Role: {args.role}")
+    print(f"Prompt: {args.prompt}")
+
+if __name__ == "__main__":
+    main()

tests/test_mma_exec.py

@@ -0,0 +1,32 @@
+import pytest
+from scripts.mma_exec import create_parser
+
+def test_parser_role_choices():
+    """Test that the parser accepts valid roles and the prompt argument."""
+    parser = create_parser()
+    valid_roles = ['tier1', 'tier2', 'tier3', 'tier4']
+    test_prompt = "Analyze the codebase for bottlenecks."
+
+    for role in valid_roles:
+        args = parser.parse_args(['--role', role, test_prompt])
+        assert args.role == role
+        assert args.prompt == test_prompt
+
+def test_parser_invalid_role():
+    """Test that the parser rejects roles outside the specified choices."""
+    parser = create_parser()
+    with pytest.raises(SystemExit):
+        parser.parse_args(['--role', 'tier5', 'Some prompt'])
+
+def test_parser_prompt_required():
+    """Test that the prompt argument is mandatory."""
+    parser = create_parser()
+    with pytest.raises(SystemExit):
+        parser.parse_args(['--role', 'tier3'])
+
+def test_parser_help():
+    """Test that the help flag works without raising errors (exits with 0)."""
+    parser = create_parser()
+    with pytest.raises(SystemExit) as excinfo:
+        parser.parse_args(['--help'])
+    assert excinfo.value.code == 0