Update shell code

Now it (mostly) passes shellcheck and is formatted with shfmt.

framework/cmd.d/sync

@@ -2,7 +2,7 @@
 
 set -eu
 
-DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
 # figure out the platform we're on
 
@@ -11,11 +11,8 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 # download $nodejs_version
 # verify its checksum against $nodejs_checksum
 
+cd "$DIR/../node"
 
-
-
-cd $DIR/../node
-
-$DIR/pnpm install
+"$DIR"/pnpm install
 
 echo we will download other files here later