ZeroDivisionError in `dashboard/test.py`

[Stranger6667]

I don't have a stable reproducer right now, but I observed the following:

  File "schemathesis/.venv/lib/python3.14/site-packages/hypofuzz/dashboard/websocket.py", line 251, in websocket_route
    await websocket.send_tests(TESTS)
  File "schemathesis/.venv/lib/python3.14/site-packages/hypofuzz/dashboard/websocket.py", line 122, in send_tests
    "stability": test.stability,
                 ^^^^^^^^^^^^^^
  File "schemathesis/.venv/lib/python3.14/site-packages/hypofuzz/dashboard/test.py", line 231, in stability
    return count_stable / (count_stable + count_unstable)
           ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ZeroDivisionError: division by zero

Which made the dashboard unresponsive. I'll try to provide more info in the coming days