feat(writer): 🎉 Update index naming conventions for consistency

* Use SQLName() for primary key constraint naming
* Enhance index name formatting with column suffix

pkg/writers/pgsql/writer.go

@@ -594,7 +594,8 @@ func (w *Writer) writeIndexes(schema *models.Schema) error {
 				if index.Unique {
 					indexType = "uidx"
 				}
-				indexName = fmt.Sprintf("%s_%s_%s", indexType, schema.SQLName(), table.SQLName())
+				columnSuffix := strings.Join(index.Columns, "_")
+				indexName = fmt.Sprintf("%s_%s_%s", indexType, table.SQLName(), strings.ToLower(columnSuffix))
 			}
 
 			// Build column list with operator class support for GIN indexes