New device type added: Seeworld P2 (JT808-based). Supported messages: 0x0200 location with TLVs (mileage, GSM signal, satellites, battery, altitude, ICCID), 0x0FA0 vendor heartbeat (pet finder status), 0x0704 batch upload, 0xEB extension container (voltage, battery, multi-BTS, charging status, device model).