Universal launcher notes:
- Added `universal_launcher.sh` script providing Run, Steam, and Power menus via dmenu.
- Added `steam-dmenu.sh` to list installed Steam games and launch them.
- Added `power-menu.sh` for locking, rebooting, and shutting down.
- Patched dmenu to center on screen, size dynamically, draw a 3px accent-colored border and separators, and update colors from accent.h.
- Enlarged dmenu's input field and added an accent divider beneath it.
- Added dwm keybindings: `Mod+Shift+p` for the power menu and `Mod+Ctrl+p` for the Steam launcher.