test: improve live test to skip gracefully when server unavailable

- Add server reachability check before attempting connection
- Test skips if Hashview server is not available on localhost:5000
- Prevents test failures when HASHVIEW_TEST_REAL env var is set but server isn't running
- Allows test to succeed when Docker/server is available and configured

pyproject.toml

@@ -45,6 +45,7 @@ exclude = [
     "hashcat-utils",
     "princeprocessor",
     "wordlists",
+    "rules",
 ]
 
 [tool.mypy]