Move Shiny processes from JS code in client to R code in server

Inject the revised character string labels provided in the R dataframe into the JS-rendered hierarchy tree nodes, using Shiny handlers for transferring information between the client side and the server. I provide the tree node labelling methodology in a completed R function, which populates the above-referenced dataframe. Please review the detailed job description carefully and the accompanying code before bidding and before requesting a chat. I will reject bids that are subsequently and significantly revised upwards unless the Freelancer can demonstrate a material shortcoming in the detailed job description; therefore, please carefully consider the initial bid amount. If the Freelancer is already comfortable with R, JS, Shiny, and Shiny handlers (though I explain handlers in the detailed job description, a simple working example is provided in the accompany materials, and handlers are already in partial use in the code), this project is straightforward as much of the code is already provided. To give Freelancers a chance to consider and to carefully review the accompanying materials, I will not check responses until early tomorrow (Wednesday August 17). Note that this is a simplified version of the project posted last week “Project Sequence Labels Stage2” that was subsequently deleted. I completed some of the tasks requested last week, cleaned up the code some, debugged the core label-generating R function, and to provide Freelancers with clearer guidance I researched Shiny handlers and provide a clean working example.