feat: Use topgrade for ujust update

system_files/desktop/shared/usr/libexec/topgrade/adwaita-for-steam-update

@@ -0,0 +1,9 @@
+#!/usr/bin/bash
+shopt -s nullglob
+
+if [ -d "$HOME/homebrew/themes/Adwaita-for-Steam" ]; then
+  cd "$HOME/homebrew/themes/Adwaita-for-Steam"
+  git pull
+fi
+
+exit 0

system_files/desktop/shared/usr/libexec/topgrade/mozilla-gnome-theme-update

@@ -0,0 +1,20 @@
+#!/usr/bin/bash
+shopt -s nullglob
+
+# Flatpak Firefox
+for firefox_gnome_theme in "$HOME/.var/app/org.mozilla.firefox/.mozilla/firefox/"*".default"*"/chrome/firefox-gnome-theme/"; do
+  if [ -d "$firefox_gnome_theme" ]; then
+    cd "$firefox_gnome_theme"
+    git pull
+  fi
+done
+
+# Flatpak Thunderbird
+for thunderbird_gnome_theme in "$HOME/.var/app/org.mozilla.Thunderbird/.thunderbird/"*".default"*"/chrome/thunderbird-gnome-theme/"; do
+  if [ -d "$thunderbird_gnome_theme" ]; then
+    cd "$thunderbird_gnome_theme"
+    git pull
+  fi
+done
+
+exit 0

system_files/desktop/shared/usr/share/ublue-os/just/10-update.just

@@ -0,0 +1,14 @@
+# vim: set ft=make :
+
+alias upgrade := update
+
+# Update system, flatpaks, and containers all at once
+update:
+    /usr/bin/topgrade --config /usr/share/ublue-os/topgrade/topgrade.toml
+
+# Update device firmware
+[no-exit-message]
+update-firmware:
+    /usr/bin/fwupdmgr refresh --force
+    /usr/bin/fwupdmgr get-updates
+    /usr/bin/fwupdmgr update

system_files/desktop/shared/usr/share/ublue-os/topgrade/topgrade.toml

@@ -3,4 +3,8 @@ paths = ["/etc/topgrade.toml"]
 
 [misc]
 disable = ["toolbx", "self_update"]
-ignore_failures = ["distrobox, "pip3"]
+ignore_failures = ["distrobox", "pip3"]
+
+[commands]
+"Firefox GNOME Theme" = "/usr/libexec/topgrade/mozilla-gnome-theme-update"
+"Steam Adwaita Theme" = "/usr/libexec/topgrade/adwaita-for-steam-update"