Finish v4 upgrade cleanup

bin/omarchy-version

@@ -2,4 +2,22 @@
 
 # omarchy:summary=Print the installed Omarchy version
 
-cat $OMARCHY_PATH/version
+omarchy_path=${OMARCHY_PATH:-/usr/share/omarchy}
+omarchy_path=${omarchy_path%/}
+
+if [[ $omarchy_path != "/usr/share/omarchy" ]]; then
+  hash=$(git -C "$omarchy_path" rev-parse --short HEAD 2>/dev/null || true)
+
+  if [[ -n $hash ]]; then
+    echo "dev ($hash)"
+  else
+    echo "dev"
+  fi
+
+  exit 0
+fi
+
+version=$(pacman -Q omarchy 2>/dev/null | awk '{ print $2 }')
+[[ -n $version ]] || exit 1
+
+echo "$version"