fix: add auto-increment field detection in smart-query import (#935)

src/lib/data/import-metadata/scripts/postgres-script.ts

@@ -194,7 +194,12 @@ cols AS (
                                             ',"default":"', ${withExtras ? withDefault : withoutDefault},
                                             '","collation":"', COALESCE(cols.COLLATION_NAME, ''),
                                             '","comment":"', ${withExtras ? withComments : withoutComments},
-                                            '"}')), ',') AS cols_metadata
+                                            '","is_identity":', CASE 
+                                                WHEN cols.is_identity = 'YES' THEN 'true'
+                                                WHEN cols.column_default IS NOT NULL AND cols.column_default LIKE 'nextval(%' THEN 'true'
+                                                ELSE 'false'
+                                            END,
+                                            '}')), ',') AS cols_metadata
     FROM information_schema.columns cols
     LEFT JOIN pg_catalog.pg_class c
         ON c.relname = cols.table_name