feat: Add initial player scene with character models and effects, implement core lobby UI and functionality, and introduce a 3D outline shader.

scenes/lobby.gd

@@ -145,6 +145,10 @@ func _ready():
 	refresh_btn.pressed.connect(_on_refresh_pressed)
 	join_btn.pressed.connect(_on_join_pressed)
 	back_btn.pressed.connect(_on_back_pressed)
+	
+	if room_list:
+		room_list.item_selected.connect(_on_room_selected)
+		room_list.item_activated.connect(_on_room_activated)
 	if room_list_profile_btn:
 		room_list_profile_btn.pressed.connect(_on_profile_btn_pressed)
 	
@@ -361,6 +365,24 @@ func _on_refresh_pressed() -> void:
 	room_list.clear()
 	LobbyManager.refresh_room_list()
 
+func _on_room_selected(index: int) -> void:
+	"""Automatically fill the match_id input when a room is clicked so it's not lost on focus change."""
+	if index < LobbyManager.available_rooms.size():
+		var room = LobbyManager.available_rooms[index]
+		if LobbyManager.is_lan_mode:
+			var ip = room.get("ip", "")
+			if not ip.is_empty():
+				match_id_input.text = ip
+		else:
+			var mid = room.get("match_id", "")
+			if not mid.is_empty():
+				match_id_input.text = mid
+
+func _on_room_activated(index: int) -> void:
+	"""Handle double-clicking a room to join immediately."""
+	_on_room_selected(index)
+	_on_join_pressed()
+
 func _on_join_pressed() -> void:
 	var match_id = match_id_input.text.strip_edges()