fix: sync contec oscilloscope machine UI, dual temp T1/T2, and cache-control to fiveparaminte-main for Render deployment

fiveparaminte-main/routers/dashboard.py

@@ -70,7 +70,14 @@ def serve_dashboard():
     dashboard_path = os.path.join(os.path.dirname(os.path.dirname(__file__)), "static", "dashboard.html")
     try:
         with open(dashboard_path, "r", encoding="utf-8") as f:
-            return HTMLResponse(content=f.read())
+            return HTMLResponse(
+                content=f.read(),
+                headers={
+                    "Cache-Control": "no-cache, no-store, must-revalidate",
+                    "Pragma": "no-cache",
+                    "Expires": "0"
+                }
+            )
     except FileNotFoundError:
         return HTMLResponse(content="<h1>Dashboard not found</h1><p>static/dashboard.html is missing</p>", status_code=404)
 
@@ -192,6 +199,8 @@ def list_patients(db: Session = Depends(get_db)):
                 "map_bp": latest_reading.map_bp if latest_reading else None,
                 "respiratory_rate": latest_reading.respiratory_rate if latest_reading else None,
                 "temperature": latest_reading.temperature if latest_reading else None,
+                "temperature2": getattr(latest_reading, 'temperature2', None) if latest_reading else None,
+                "temperature_diff": getattr(latest_reading, 'temperature_diff', None) if latest_reading else None,
                 "timestamp": latest_reading.timestamp.isoformat() if (latest_reading and latest_reading.timestamp) else None,
             } if latest_reading else None
         })