fix(api): use --port instead of --rpc-port for transmission-daemon

transmission-daemon 4.x uses --port for the RPC port, not --rpc-port.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hate_crack/api.py

@@ -277,7 +277,7 @@ class TransmissionSession:
                 "-f",
                 "-g",
                 self._cfg_dir,
-                "--rpc-port",
+                "--port",
                 str(self._port),
                 "--rpc-bind-address",
                 "127.0.0.1",

tests/test_api_downloads.py

@@ -112,7 +112,7 @@ class TestTransmissionSession:
                 args = popen.call_args[0][0]
                 assert args[0] == "transmission-daemon"
                 assert "-f" in args
-                assert "--rpc-port" in args
+                assert "--port" in args
                 assert "12345" in args
                 assert "--no-auth" in args
                 assert "--download-dir" in args