feat: default interface broadcast to 'detect'

backend/app/models.py

@@ -60,7 +60,7 @@ class Interface(Base):
     config_id: Mapped[int] = mapped_column(Integer, ForeignKey("configs.id"), nullable=False)
     name: Mapped[str] = mapped_column(String(32), nullable=False)
     zone_id: Mapped[int | None] = mapped_column(Integer, ForeignKey("zones.id"), nullable=True)
-    broadcast: Mapped[str] = mapped_column(String(64), default="")
+    broadcast: Mapped[str] = mapped_column(String(64), default="detect")
     options: Mapped[str] = mapped_column(Text, default="")
 
     config: Mapped["Config"] = relationship("Config", back_populates="interfaces")

backend/app/schemas.py

@@ -65,7 +65,7 @@ class ZoneOut(BaseModel):
 class InterfaceCreate(BaseModel):
     name: str
     zone_id: Optional[int] = None
-    broadcast: str = ""
+    broadcast: str = "detect"
     options: str = ""