Critical Logic Error: Incorrect Distance Calculation

[2403717674422018-hue]

The Flaw:
The function calculates the distance between coordinates, but the arguments are passed to haversine_distance in the wrong order, causing nonsensical calculations.

Function definition expects: (lat1, lon1, lat2, lon2)

def haversine_distance(lat1, lon1, lat2, lon2): ...

Function call inside create_order:

distance_km = haversine_distance(
order.source_lat,
order.dest_lat, # <--- Should be dest_lon
order.source_lon, # <--- Should be source_lon (if 2nd arg was correct)
order.dest_lon
)

Why it breaks the system:

It is passing Dest Latitude as the second argument where Source Longitude is expected.