feat(migration): enhance primary key handling and add GIN index support in migration writer

pkg/writers/pgsql/writer.go

@@ -228,6 +228,7 @@ func (w *Writer) GenerateSchemaStatements(schema *models.Schema) ([]string, erro
 				ConstraintName: pkName,
 				AutoGenNames:   formatStringList(autoGenPKNames),
 				Columns:        strings.Join(pkColumns, ", "),
+				ColumnNames:    formatStringList(pkColumns),
 			}
 
 			stmt, err := w.executor.ExecuteCreatePrimaryKeyWithAutoGenCheck(data)
@@ -806,6 +807,7 @@ func (w *Writer) writePrimaryKeys(schema *models.Schema) error {
 			ConstraintName: pkName,
 			AutoGenNames:   formatStringList(autoGenPKNames),
 			Columns:        strings.Join(columnNames, ", "),
+			ColumnNames:    formatStringList(columnNames),
 		}
 
 		sql, err := w.executor.ExecuteCreatePrimaryKeyWithAutoGenCheck(data)