updated docs: api.md

Author: Maria0claraa

docs/backend-docs/api.md

@@ -108,7 +108,31 @@ The add farm endpoint also creates an entry on our redis server in the form of `
 **NOTE: The above body is only an example and the values need not be equal to the ones present. They must only be equal in data type.**<br>
 **NOTE: Please do ensure ownerId is a valid and existing OwnerId for the above request body.**
 
-## 1.4 Notifications
+## 1.5 Dashboard
+
+- `api/dashboard/latest?userId={userId}` => Returns real-time sensor data for all animals. Returns latest readings per sensor with heart rate, temperature, and location.
+  - **Method**: GET; 
+  - **Access**: Secured
+  - **Response Body**:
+```json
+{
+    "latestReadings": [
+        {
+            "sensorId": 1,
+            "animalId": 100,
+            "heartRate": 85,
+            "temperature": 38.5,
+            "xPosition": 3,
+            "yPosition": 6,
+            "timestamp": "2026-04-19T10:30:00Z"
+        }
+    ],
+    "totalSensors": 5,
+    "timestamp": 1713607800000
+}
+```
+
+## 1.6 Notifications
 
 - `api/notif/animal_escape` => Sends a notification to everyone with a matching farm_id of the animal. The request body must be as such:
 ```json