Update app.py

app.py

@@ -47,16 +47,17 @@ Please analyze the freight rate table in the file I provide and convert it into
       "transit": "...",
       "transit_time": "...",
       "weight_breaks": {
-        "m": ...,
-        "n": ...,
-        "45kg": ...,
-        "100kg": ...,
-        "300kg": ...,
-        "500kg": ...,
-        "1000kg": ...,
+        "M": ...,
+        "N": ...,
+        "+45kg": ...,
+        "+100kg": ...,
+        "+300kg": ...,
+        "+500kg": ...,
+        "+1000kg": ...,
         "other": {
           key: value
-        }
+        },
+        "weight_breaks_reason":"Why chosen weight_breaks?"
       },
       "remark": "..."
     }
@@ -84,7 +85,7 @@ Please analyze the freight rate table in the file I provide and convert it into
 
 STRICT RULES:
 - ONLY return a single JSON object as specified above.
-- All rates must exactly match the corresponding weight break columns (45kg, 100kg, 300kg, 500kg, 1000kg, etc.). set null if N/A. No assumptions or interpolations.
+- All rates must exactly match the corresponding weight break columns (M,N,45kg, 100kg, 300kg, 500kg, 1000kg, etc.). set null if N/A. No assumptions or interpolations.
 - If the table shows "RQ" or similar, set value as "RQST".
 - Group same-price destinations into one record separated by "/".
 - Always use IATA code for origin and destination.