feat: implement networked match HUD with real-time scoreboard and killfeed systems

test_rpc.gd

@@ -0,0 +1,20 @@
+extends SceneTree
+
+func _init():
+	var nm = load("res://globals/network_manager.gd").new()
+	nm.name = "NetworkManager"
+	root.add_child(nm)
+	
+	var hud = load("res://ui/match_hud.gd").new()
+	hud.name = "MatchHUD"
+	root.add_child(hud)
+	
+	# Mock network manager state
+	nm.match_active = true
+	nm._init_player_stats(1, "LocalTester")
+	
+	# Try to call register_kill
+	nm.register_kill.rpc(-1, 1, "Rifle", "Target Dummy")
+	
+	# Process one frame
+	call_deferred("quit")