test: stub hashcat potfile-recovery call in non-interactive integration tests

The pre-dispatch 'check POT file' step in main() shells out to the real
hashcat binary, which is absent in CI, causing the four test_main_* tests
to fail with FileNotFoundError. Stub _run_hashcat_show in the shared
_run_main helper — these tests verify dispatch routing and prompt
suppression, not potfile recovery.

Co-Authored-By: Claude <noreply@anthropic.com>

tests/test_noninteractive.py

@@ -167,6 +167,10 @@ def test_dispatch_quick_multiple_rules_runs_each_as_separate_pass(tmp_path):
 
 def _run_main(monkeypatch, argv):
     monkeypatch.setattr(sys, "argv", ["hate_crack.py"] + argv)
+    # main()'s pre-dispatch potfile-recovery step shells out to the real hashcat
+    # binary, which is absent in CI. Stub it — these tests exercise dispatch
+    # routing and prompt suppression, not potfile recovery.
+    monkeypatch.setattr(hc_main, "_run_hashcat_show", lambda *a, **k: None)
     with pytest.raises(SystemExit) as excinfo:
         hc_main.main()
     return excinfo.value.code