Xterm added as valid terminal.

.codex/skills/linux-game-manager-dev/references/core-map.md

@@ -39,6 +39,7 @@ python3 .codex/skills/linux-game-manager-dev/scripts/audit_game_catalog.py
 - `game_launcher` enumerates `.launch/*.sh` entries.
 - Entries with first line `#//` are skipped.
 - Selected launcher is sourced/executed.
+- Text-terminal launchers can fall back to `xterm`, which inherits the requested working directory before executing the game command.
 
 3. **Removal flow**
 - `game_removal` resolves launcher entry to real script.
@@ -57,7 +58,7 @@ python3 .codex/skills/linux-game-manager-dev/scripts/audit_game_catalog.py
 - `-u`: update game
 - `-t`: show number of available games
 - `-C`: clear cache
-- `-D`: create desktop launcher
+- `-D`: create desktop launcher; terminal discovery includes `xterm`, using its `-T` title option instead of `-t`
 - `-L`: show license
 - `-h`: show help
 - `-N`: enable no-cache mode