* Fix Nametag update failing with missing tailwindcss module
npm ci during update ran with devDependencies omitted, likely because
NODE_ENV=production was already present in the environment by then
(npm's documented default: omit=dev when NODE_ENV=production). Since
@tailwindcss/postcss is a devDependency, the subsequent `npm run build`
failed with "Cannot find module '@tailwindcss/postcss'". Force devDeps
to be installed regardless of NODE_ENV via --include=dev.
* Apply --include=dev to fresh installs too, for parity with update fix
Couldn't confirm within this repo why devDependencies would only be
omitted on update and not on a fresh install - create_backup/
restore_backup are plain file copies and nothing in tools.func sets
NODE_ENV or writes an .npmrc. Since npm ci runs before .env is sourced
in both scripts, apply the same explicit --include=dev to the installer
as defense-in-depth against the same class of failure.