Fix Power Up Inventory

feat: Add player input handling for movement, actions, and skill targeting, and implement special tile effect management.

scripts/managers/player_input_manager.gd

@@ -46,7 +46,42 @@ func _process(delta):
 	if target_position != player.current_position:
 		movement_manager.simple_move_to(target_position)
 
-	# Targeting Inputs (1, 2, 3, 4)
+	# === KEYBOARD SHORTCUTS (User Request) ===
+	
+	# Numpad 1: Speed (Enum 0)
+	if Input.is_key_pressed(KEY_KP_1):
+		player.attempt_target_action(0) # FASTER_SPEED
+		
+	# Numpad 2: Wall (Enum 2)
+	elif Input.is_key_pressed(KEY_KP_2):
+		player.attempt_target_action(2) # BLOCK_FLOOR
+		
+	# Numpad 3: Freeze (Enum 1)
+	elif Input.is_key_pressed(KEY_KP_3):
+		player.attempt_target_action(1) # AREA_FREEZE
+		
+	# Numpad 4: Ghost (Enum 3)
+	elif Input.is_key_pressed(KEY_KP_4):
+		player.attempt_target_action(3) # INVISIBLE_MODE
+
+	# C: Special Attack (Attack Mode) - Boost
+	elif Input.is_key_pressed(KEY_C):
+		if player.powerup_manager:
+			player.powerup_manager.use_special_effect()
+			
+	# V: Spawn Boost Item
+	elif Input.is_key_pressed(KEY_V):
+		if player.powerup_manager:
+			# Verify the method exists first (it was added recently/confirmed available)
+			if player.powerup_manager.has_method("spawn_boost_reward"):
+				player.powerup_manager.spawn_boost_reward()
+			else:
+				# Fallback if method missing
+				player.powerup_manager.use_special_effect()
+				
+	# Original 1-4 keys (Succession order 0-3) - Keeping as fallback?
+	# User didn't ask to remove them, but new Numpad bindings are specific.
+	# We can leave them for now unless they conflict.
 	if Input.is_key_pressed(KEY_1):
 		player.attempt_target_action(0)
 	elif Input.is_key_pressed(KEY_2):
@@ -82,7 +117,7 @@ func _process(delta):
 				player.highlight_cells_if_authorized(area, highlight_id)
 
 func handle_unhandled_input(event):
-	# Early return if not authorized human player
+	# Early return if not authorized human playersa
 	if not player.is_multiplayer_authority() or player.is_bot or player.is_in_group("Bots"):
 		player.set_process_unhandled_input(false)
 		return