update: Major Overhaul to all subsystems

backend/mqtt/models.py

@@ -84,3 +84,15 @@ class CommandSendResponse(BaseModel):
     success: bool
     command_id: int
     message: str
+
+
+class DeviceAlertEntry(BaseModel):
+    device_serial: str
+    subsystem: str
+    state: str
+    message: Optional[str] = None
+    updated_at: str
+
+
+class DeviceAlertsResponse(BaseModel):
+    alerts: List[DeviceAlertEntry]