Misc: tmux, shells, Firefox, packages

- setup:
	- Update Fedora install guide to Fedora 43.
	- Add packages g4music, gwenview, earlyoom, and easyeffects.
	- Use HDR in Firefox.
	- Allow containers to use GPU.
	- Enable earlyoom.
	- Remove Signal notification permission.
	- Add Gamescope.
	- Reload systemd daemon in SSH setup.
- tmux: Rename default session to ssh & fix duplicate shell launch.

auto/shells/bash

@@ -75,7 +75,7 @@ if [ -z "$TMUX" ] && [ -n "$SSH_TTY" ]; then
 	tput rc
 	tput el
 	if [ "$input" = ' ' ]; then
-		exec tmux new -As default
+		exec tmux new -As ssh
 	fi
 fi
 EOF

auto/shells/fish

@@ -46,7 +46,7 @@ sed 's/.*src \([0-9.]\+\).*/\1/' || echo not found)(set_color red)'
 			tput rc
 			tput el
 			if [ "$input" = ' ' ]
-				exec tmux new -As default
+				exec tmux new -As ssh
 			end
 		end
 	end

auto/tmux/.tmux.conf

@@ -1,5 +1,4 @@
 set -g clock-mode-style 12
-set -g default-command "${SHELL}"
 set -g default-terminal "tmux-256color"
 set -as terminal-features ",xterm-256color:RGB,alacritty:RGB"
 # curly underline support