feat(clean-release): complete compliance redesign phases and polish tasks T047-T052

backend/tests/scripts/test_clean_release_tui.py

@@ -29,25 +29,18 @@ def mock_stdscr() -> MagicMock:
 def test_headless_fallback(capsys):
     """
     @TEST_EDGE: stdout_unavailable
-    Tests that if the stream is not a TTY or PYTEST_CURRENT_TEST is set, 
-    the script falls back to a simple stdout print instead of trapping in curses.wrapper.
+    Tests that non-TTY startup is explicitly refused and wrapper is not invoked.
     """
-    # Environment should trigger headless fallback due to PYTEST_CURRENT_TEST being set
-    
     with mock.patch("backend.src.scripts.clean_release_tui.curses.wrapper") as curses_wrapper_mock:
         with mock.patch("sys.stdout.isatty", return_value=False):
             exit_code = main()
-        
-        # Ensures wrapper wasn't used
+
         curses_wrapper_mock.assert_not_called()
-        
-        # Verify it still exits 0
-        assert exit_code == 0
-        
-        # Verify headless info is printed
+
+        assert exit_code == 2
         captured = capsys.readouterr()
-        assert "Enterprise Clean Release Validator (Headless Mode)" in captured.out
-        assert "FINAL STATUS: READY" in captured.out
+        assert "TTY is required for TUI mode" in captured.err
+        assert "Use CLI/API workflow instead" in captured.err
 
 
 @patch("backend.src.scripts.clean_release_tui.curses")