Renders the standard output of a shell command (taken from the first row of the query) inside a styled <pre> block.
COMMAND — set as ReportType in def_report.
def Render(self, Param1="", Param2="", Param3="") -> str:
The query must return at least one row; the first column of the first row is treated as the shell command string to execute. Output is wrapped in a div.box with a <pre> element.
Uses self.system_run() to execute the command. Exercise caution — the command string comes directly from the database query result.