In file Db/Adapter/Pdo/Sqlite.php, in the describeTable method, schema and table names are not quoted (as it is done in Mysql pdo adaptor).

code :

if ($schemaName) {
            $sql = "PRAGMA $schemaName.table_info($tableName)";
        } else {
            $sql = "PRAGMA table_info($tableName)";
        }

shoulb be

if ($schemaName) {
            $sql = 'PRAGMA '.$this->quoteIdentifier($schemaName).'.table_info('.$this->quoteIdentifier($tableName).')';
        } else {
            $sql = 'PRAGMA table_info('.$this->quoteIdentifier($tableName).')';
        }