Security fix: backend/api/routes/sensors.py

backend/api/routes/sensors.py

@@ -153,7 +153,7 @@ async def temp_humidity(
             r = {"timestamp": ts.isoformat()}
             for col in ["airTemperature", "airHumidity"]:
                 v = row.get(col)
-                if v is not None and v == v:
+                if v is not None and v == v:  # NaN check (NaN != NaN)
                     r[col] = round(float(v), 1)
             rows.append(r)
         return rows
@@ -175,7 +175,7 @@ async def ndvi_history(
                 if not df.empty and "NDVI" in df.columns:
                     for ts, row in df.iterrows():
                         v = row.get("NDVI")
-                        if v is not None and v == v:
+                        if v is not None and v == v:  # NaN check (NaN != NaN)
                             rows.append({"timestamp": ts.isoformat(), "device": label, "ndvi": round(float(v), 4)})
             except Exception:
                 pass