feat: add network-level kill switch endpoint

gatehouse_app/models/__init__.py

@@ -120,6 +120,16 @@ from gatehouse_app.models.security.mfa_policy_compliance import (  # noqa: F401
     MfaPolicyCompliance,
 )
 
+# ── ZeroTier ──────────────────────────────────────────────────────────────
+from gatehouse_app.models.zerotier import (  # noqa: F401
+    PortalNetwork,
+    Device,
+    NetworkAccessRequest,
+    ActivationSession,
+    ZeroTierMembership,
+    KillSwitchEvent,
+)
+
 __all__ = [
     # Base
     "BaseModel",

gatehouse_app/models/zerotier/network_access_request.py

@@ -144,4 +144,6 @@ class NetworkAccessRequest(BaseModel):
         data = super().to_dict(exclude=exclude)
         session = self.active_session
         data["active_session"] = session.to_dict() if session else None
+        data["device_name"] = self.device.display_name if self.device else None
+        data["device_nickname"] = self.device.device_nickname if self.device else None
         return data