Step 6. Locate the built server and client zip files
You can find the distribution zip files inside the build folder, which is inside the stendhal folder.
You will recognize most of these zip files because they are just like the ones that you can download in each official release of Stendhal.
Now you can choose the client (stendhal-1.26.5) or server (stendhal-server-1.26.5) zip files and extract them somewhere.
You can see Easy Stendhal Server Installation On Windows for details about how to easily set up your own local server.