Set correct package name for Go package generation

scripts/build.sh

@@ -18,7 +18,7 @@ for file in $FILES; do
     npx --yes json-schema-to-typescript "$file" > "gen/ts/${clean_name}.ts"
     
     # Generate Go
-    go-jsonschema -p models "$file" > "gen/go/models/${clean_name}.go"
+    go-jsonschema -p backend_data_contracts "$file" > "gen/go/models/${clean_name}.go"
 done
 
 echo "✅ Generated single TS package in gen/ts"