increase grub boot delay for switching os

.github/workflows/arrow.yml

@@ -128,5 +128,5 @@ jobs:
       - name: Copy Identity File to Host
         if: inputs.action == 'create'
         run: |
-          ssh noah@${{ steps.host.outputs.stdout }} 'mkdir -pv .ssh'
+          ssh -o StrictHostKeyChecking=accept-new noah@${{ steps.host.outputs.stdout }} 'mkdir -pv .ssh'
           scp -i deploy_ed25519 arrow_ed25519 noah@${{ steps.host.outputs.stdout }}:~/.ssh/id_ed25519

modules/nixos/hardware/boot.nix

@@ -27,7 +27,7 @@
         if keystatus --shift ; then
             set timeout=-1
         else
-            set timeout=0
+            set timeout=3
         fi
       '';
     };