- Add automatic format detection (binary, ASCII hex dump, or text line) in StreamReader based on stream preambles.
- Implement fallback to 115200 baudrate when 888888 ioctl fails (critical for macOS PTYs).
- Parse binary streams (X family) with little-endian sequence/length headers and Modbus CRC-16 checks.
- Discover and prioritize virtual serial ports (from running socat instances) in enumerate_ports using lsof.
- Update FakeTransport to mock read() and readline() calls for unit test compatibility.