Next.js compliant command for production builds (#2219)

* feat: Vercel compliant command for prod builds

* feat: simplify to a single command, rename command

Also included the script to download assets.

* fix: exclude vercel injected env vars

Vercel injects a number of environment variables, that in some cases can result in run time errors when the app is reading from envs.js. Exclude these.

deploy/scripts/make_envs_script.sh

@@ -18,6 +18,12 @@ echo "window.__envs = {" >> $output_file;
 
 # Iterate through all environment variables
 for var in $(env | grep '^NEXT_PUBLIC_' | cut -d= -f1); do
+  # Skip variables that start with NEXT_PUBLIC_VERCEL. Vercel injects these
+  # and they can cause runtime errors, particularly when commit messages wrap lines.
+  if [[ $var == NEXT_PUBLIC_VERCEL* ]]; then
+    continue
+  fi
+
   # Get the value of the variable
   value="${!var}"