How can I visually let the user know where the file has been deployed - DEV, QA, PROD

System

We have 3 external web servers. DEV, QA, and PROD.

We would like be able to perform the following
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Submit images via workflow and deploy to the external DEV web server. View the images on the external DEV web server.

Submit images via workflow and deploy to the external QA web server. View the images on the external QA web server.

Submit images via workflow and deploy to the external PROD web server. View the images on the external PROD web server.

See via Teamsite an indicator as to what server the file has been deployed to.
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This should be done with only one Branch with only one workarea. Deployment is via a filelist.

I have thought about adding an EA tag and modifying it each each time the file is deployed and changing it to DEV, QA and PROD, but then the user has to view the properties for each file and the file timestamp changes.

I also thought about creating a menu item that when clicked would list all the files in the directory with the previously mentioned EA tag.

Ultimiately the users would like to see a D, Q, or P next to the filename in the Teamsite file list frame. I know that's it's not possible to list EAs in , but maybe someone else has faced this task.

Currently I am copying the files from DEV into another Branch called QA via a workflow in the DEV branch. Doing similar to get the files from QA to PROD. I'm not keen on this solution.

Any suggestions on how I can easily give the users the ability to know where the files have been deployed and keep them all in one branch?