v2.0.x Chore - Improve test command construction maintainability

[reactive-firewall]

The command construction could be more maintainable using a dictionary or configuration object.

Consider:

def get_hear_command(executable, port, group="224.0.0.1"):
    """Build the HEAR command with given parameters."""
    return [
        f"{executable} -m coverage run -p --context=Integration",
        "--source=multicast",
        "-m", "multicast",
        "--daemon", "HEAR",
        "--port", str(port),
        "--group", group
    ]

# Usage:
_fixture_HEAR_args = get_hear_command(sys.executable, _fixture_port_num)

and similar refactoring

[reactive-firewall]

also consider:

+    def _build_hear_command(self, port, group="224.0.0.1"):
+        """Build the command for running the multicast HEAR service.
+        
+        Args:
+            port (int): The port number to use
+            group (str, optional): The multicast group. Defaults to "224.0.0.1"
+        
+        Returns:
+            list: The command arguments list
+        """
+        base_cmd = str("{} -m coverage run -p --context=Integration").format(sys.executable)
+        return [
+            base_cmd, "--source=multicast",
+            "-m", "multicast",
+            "--daemon", "HEAR",
+            "--port", str(port),
+            "--group", group
+        ]
+
     def test_hear_keyboard_interrupt(self):
-        _fixture_cmd = str("{} -m coverage run -p --context=Integration").format(sys.executable)
-        _fixture_HEAR_args = [
-            _fixture_cmd, """--source=multicast""",
-            """-m""", """multicast""",
-            """--daemon""", """HEAR""",
-            """--port""", str(_fixture_port_num),
-            """--group""", """224.0.0.1"""
-        ]
+        _fixture_HEAR_args = self._build_hear_command(_fixture_port_num)