Adjusted forward to datfid_api_webpage space by including session_id as required input

main.py

@@ -852,6 +852,7 @@ async def modelfit_file_demo(
     current_features: str = Form(""),
     filter_by_significance: str = Form("false"),
     meanvar_test: str = Form("false"),
+    session_id: str = Form(...),
 ):
     
     # read once, size-guard it, then forward
@@ -859,6 +860,10 @@ async def modelfit_file_demo(
     if len(raw) > SDK_MAX_BODY_BYTES:
         raise HTTPException(status_code=413, detail="Payload too large.")
     
+    sid = session_id.strip()
+    if not sid:
+        raise HTTPException(status_code=400, detail="Missing session_id")
+    
     files = {
         "file": (file.filename, raw, file.content_type or "application/octet-stream"),
     }
@@ -871,6 +876,7 @@ async def modelfit_file_demo(
         "current_features": current_features,
         "filter_by_significance": filter_by_significance,
         "meanvar_test": meanvar_test,
+        "session_id": sid,
     }
     # the path goes to the private demo route
     return await _forward_demo_stream("/modelfit-file-demo/", files=files, data=data, method="POST")
@@ -881,16 +887,25 @@ async def modelfit_file_demo(
 async def modelforecast_file_demo(
     request: Request,
     df_forecast: UploadFile = File(...),
+    session_id: str = Form(...),
 ):
     
     raw = await df_forecast.read()
     if len(raw) > SDK_MAX_BODY_BYTES:
         raise HTTPException(status_code=413, detail="Payload too large.")
     
+    sid = session_id.strip()
+    if not sid:
+        raise HTTPException(status_code=400, detail="Missing session_id")
+    
     files = {
         "df_forecast": (df_forecast.filename, raw, df_forecast.content_type or "application/octet-stream"),
     }
-    return await _forward_demo_stream("/modelforecast-file-demo/", files=files, data=None, method="POST")
+    data = {
+        "session_id": sid,
+    }
+
+    return await _forward_demo_stream("/modelforecast-file-demo/", files=files, data=data, method="POST")
 
 @app.get("/health-demo-proxy")
 async def health_demo_proxy():