feat: implement Contec patient monitor discovery tool and server framework

models.py

@@ -0,0 +1,41 @@
+from sqlalchemy import Column, Integer, String, Float, Boolean, DateTime
+from datetime import datetime, timezone
+from database import Base
+
+class Device(Base):
+    __tablename__ = "devices"
+    id = Column(Integer, primary_key=True, index=True)
+    device_id = Column(String, unique=True, index=True)
+    ip_address = Column(String)
+    status = Column(String, default="active")
+    last_seen = Column(DateTime, default=lambda: datetime.now(timezone.utc))
+
+class Patient(Base):
+    __tablename__ = "patients"
+    id = Column(Integer, primary_key=True, index=True)
+    patient_id = Column(String, unique=True, index=True)
+    name = Column(String)
+
+class VitalReading(Base):
+    __tablename__ = "vital_readings"
+    id = Column(Integer, primary_key=True, index=True)
+    device_id = Column(String, index=True)
+    patient_id = Column(String, index=True)
+    timestamp = Column(DateTime, index=True)
+    heart_rate = Column(Float, nullable=True)
+    spo2 = Column(Float, nullable=True)
+    systolic_bp = Column(Float, nullable=True)
+    diastolic_bp = Column(Float, nullable=True)
+    map_bp = Column(Float, nullable=True)
+    respiratory_rate = Column(Float, nullable=True)
+    temperature = Column(Float, nullable=True)
+    transmitted = Column(Boolean, default=False, index=True)
+
+class TransmissionLog(Base):
+    __tablename__ = "transmission_logs"
+    id = Column(Integer, primary_key=True, index=True)
+    reading_id = Column(Integer, index=True)
+    status = Column(String)
+    response_code = Column(Integer, nullable=True)
+    error_message = Column(String, nullable=True)
+    timestamp = Column(DateTime, default=lambda: datetime.now(timezone.utc))