Update version to 0.2.2, improve network cache handling, and enhance train state tracking

power-stats.lua

@@ -3,9 +3,7 @@ function AddPowerPole(event)
     if e then
         storage.representativePoles[e.unit_number] = e
         -- Update cache with new network
-        if e.electric_network_id then
-            storage.networkCache[e.electric_network_id] = e
-        end
+        storage.networkCache = nil
     end
 end
 
@@ -50,7 +48,7 @@ function ScanNetworks()
             end
         end
     end
-end
+end 
 
 function SendPowerStats()
     if options.enablePower then