Add more information about traffic_cop and add .md suffix to the classes file

CLAUDE.md

@@ -384,6 +384,13 @@ Thread 5 = Raspberry pi data recever = this receives the data from the raspberry
         not be developed for the current version of the project. The Raspberry PI receiver will
         need to set mutex-raspberry-pi in order to transfer target data to the traffic cop.
 
+Thread 6 = Physical control panel (to be defined later)
+        This will handle control operations from the physical control panel. It will need
+        to make appropriate changes to the CPU globals and the uniforms in the shades,
+        similar to the Keyboard controls. However, since this thread 6, it will need
+        to assert the mutex-to-pass-controls-to-thread-1 mutex before sending
+        values to thread 1.
+
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