feat: Add initial main game scene with grid map, player board UI, and manager scripts for game logic and input.

scripts/managers/powerup_manager.gd

@@ -72,7 +72,7 @@ func _on_boost_full():
 	# player.is_attack_mode = true # Removed auto-activate
 	emit_signal("bar_filled")
 	NotificationManager.send_message(player, NotificationManager.MESSAGES.ATTACK_MODE_READY, NotificationManager.MessageType.POWERUP)
-	print("[PowerUp] Player %s Boost Full! Entering Attack Mode." % player.name)
+	print("[PowerUp] Player %s Boost Full! Ready for Attack Mode." % player.name)
 	
 	if player.is_multiplayer_authority():
 		rpc("sync_boost", current_boost)
@@ -100,6 +100,14 @@ func sync_boost(value: float):
 		# Could trigger visual effect here
 		pass
 
+@rpc("authority", "call_local", "reliable")
+func sync_boost_level(level: int):
+	current_level = level
+	var level_idx = clamp(current_level - 1, 0, FILL_TIMES.size() - 1)
+	print("[PowerUp] Difficulty synced: Level %d (Fill Time: %.1fs)" % [current_level, FILL_TIMES[level_idx]])
+
+
+
 # =============================================================================
 # Getters
 # =============================================================================
@@ -113,6 +121,11 @@ func get_max_points() -> int:
 func get_fill_percentage() -> float:
 	return current_boost / MAX_BOOST
 
+func get_bars() -> int:
+	"""Returns the number of filled segments (0-4)."""
+	# Each bar is 25 points (100 / 4)
+	return int(current_boost / 25.0)
+
 func can_use_special() -> bool:
 	# Use small epsilon for float comparison to avoid "99.999" issues
 	return current_boost >= (MAX_BOOST - 0.1)
@@ -177,3 +190,7 @@ func add_goal_completion_reward():
 	print("[PowerUp] Player %s Completed Goal. Boost Level Up! Now: %d (Fill Time: %.1fs)" % [player.name, current_level, FILL_TIMES[level_idx]])
 	
 	# Optional: Notify user of difficulty increase?
+	
+	if multiplayer.is_server():
+		rpc("sync_boost_level", current_level)
+