Fix supabase-cli to use writable /var/lib/supabase directory

default.nix

@@ -170,14 +170,23 @@ in
     systemd.tmpfiles.rules = [
       "d /var/lib/usda-vision 0755 root root -"
       "f /var/lib/usda-vision/.env 0644 root root -"
+      "d /var/lib/supabase 0755 root root -"
     ];
 
-    # Supabase CLI configuration in usda-vision-app directory
+    # Supabase CLI configuration - runs in writable directory
     systemd.services.supabase-cli = {
       enable = true;
       description = "Supabase CLI Service";
+      
+      preStart = ''
+        # Copy supabase config if it exists in the app
+        if [ -d ${usda-vision-app}/opt/usda-vision/supabase ]; then
+          ${pkgs.rsync}/bin/rsync -av ${usda-vision-app}/opt/usda-vision/supabase/ /var/lib/supabase/
+        fi
+      '';
+      
       serviceConfig = {
-        WorkingDirectory = "${usda-vision-app}/opt/usda-vision/management-dashboard-web-app";
+        WorkingDirectory = "/var/lib/supabase";
         ExecStart = "${pkgs.supabase-cli}/bin/supabase start";
         Type = "oneshot";
         RemainAfterExit = true;