Search Node for Runbook Configuration Text Matching

NetBrain Runbooks currently have no native way to search device configuration or command output for a specific text string; achieving this today requires building a custom QApp to query and filter the underlying data. This enhancement would introduce a Search node within the Runbook canvas that accepts a search string as input and returns the devices where the string is found, along with a configurable number of context lines before and after each match, similar to a grep function. Adding this capability directly to Runbook would remove the need for custom scripting, make troubleshooting workflows more self-contained, and support Runbooks that are triggered from external systems as part of an automated process.