Add hardware-linked USB intake and inspection workflow

inventory/models.py

@@ -570,3 +570,18 @@ class ImportJob(TimeStampedModel):
     headers = models.JSONField(default=list)
     preview_rows = models.JSONField(default=list)
     result = models.JSONField(default=dict)
+
+
+class DeviceIdentity(models.Model):
+    """Stable intake identity, independent of mutable specifications and USBs."""
+    hwid = models.CharField(max_length=100, unique=True)
+    device = models.ForeignKey(Device, on_delete=models.PROTECT, related_name='hardware_identities')
+    created_at = models.DateTimeField(auto_now_add=True)
+
+class InspectionSubmission(models.Model):
+    request_id = models.UUIDField(unique=True)
+    device = models.ForeignKey(Device, on_delete=models.PROTECT, related_name='usb_inspections')
+    payload_hash = models.CharField(max_length=64)
+    payload = models.JSONField()
+    recorded_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.SET_NULL, null=True)
+    created_at = models.DateTimeField(auto_now_add=True)