fix: improve ai table file handling

internal/tableparse/tableparse.go

@@ -92,12 +92,17 @@ func parseXLSX(path string) (Profile, error) {
 	}
 	defer f.Close()
 	for _, sheet := range f.GetSheetList() {
-		rows, err := f.GetRows(sheet)
+		iter, err := f.Rows(sheet)
 		if err != nil {
 			continue
 		}
-		cleaned := make([][]string, 0, min(len(rows), maxRows))
-		for _, row := range rows {
+		cleaned := make([][]string, 0, maxRows)
+		for iter.Next() {
+			row, err := iter.Columns()
+			if err != nil {
+				_ = iter.Close()
+				return Profile{}, err
+			}
 			if emptyRow(row) {
 				continue
 			}
@@ -106,6 +111,9 @@ func parseXLSX(path string) (Profile, error) {
 				break
 			}
 		}
+		if err := iter.Close(); err != nil {
+			return Profile{}, err
+		}
 		if len(cleaned) > 0 {
 			return profileRows(cleaned), nil
 		}