Refactor AgentTracker and related modules to improve agent management and logging

Modules/Spotter.lua

@@ -31,7 +31,7 @@ function shared.Spotter.Init()
 			print(string.format("[%s] Checking notification criteria for %s (%s)", ModuleName, name, faction))
 		end
 
-		if Heimdall_Data.config.agents[name] then
+		if shared.AgentTracker.IsAgent(name) then
 			if Heimdall_Data.config.spotter.debug then
 				print(string.format("[%s] Skipping agent: %s", ModuleName, name))
 			end