Phase 1: scaffold local backend — models, schemas, routers, printer service, Docker

local_backend/models/printer.py

@@ -0,0 +1,16 @@
+from sqlalchemy import Column, Integer, String, Boolean
+from sqlalchemy.orm import relationship
+from database import Base
+
+
+class Printer(Base):
+    __tablename__ = "printers"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String, nullable=False)
+    ip_address = Column(String, nullable=False)
+    port = Column(Integer, default=9100, nullable=False)
+    is_active = Column(Boolean, default=True, nullable=False)
+
+    products = relationship("Product", back_populates="printer_zone")
+    print_logs = relationship("PrintLog", back_populates="printer")