Fix DataCollection.define() API call

app.py

@@ -257,10 +257,13 @@ async def generate_heatmap(request: HeatmapRequest):
         end_date = datetime.now()
         start_date = end_date - timedelta(days=30)
         
-        # Define data collection for CDSE
-        SENTINEL2_L2A_CDSE = DataCollection.define_from(
-            DataCollection.SENTINEL2_L2A,
-            service_url='https://sh.dataspace.copernicus.eu'
+        # Define custom CDSE data collection (same as S2 pipeline)
+        SENTINEL2_L2A_CDSE = DataCollection.define(
+            "SENTINEL2_L2A_CDSE",
+            api_id="sentinel-2-l2a",
+            service_url="https://sh.dataspace.copernicus.eu",
+            collection_type="Sentinel-2",
+            is_timeless=False
         )
         
         # Create request for all 13 bands