Document the site's Node minimum and find Chrome on Linux

SvelteKit needs Node 22.17 or later, and engine-strict makes npm
install stop on older versions, so declare it in engines and say so
in the README. build-images.sh now finds Chrome or Chromium on PATH
before falling back to the macOS app, and stops with a clear message
when neither is there.

Co-authored-by: Cursor <[email protected]>

site/README.md

@@ -4,7 +4,9 @@ The download page for terminal-rs. It is one static page built with SvelteKit fo
 `/download` route that redirects to the latest release DMG.
 
 This folder is its own npm project, separate from the Cargo workspace. Run the commands below from
-`site/`, and set the Vercel project's Root Directory to `site`.
+`site/`, and set the Vercel project's Root Directory to `site`. It needs Node 22.17 or later, the
+minimum SvelteKit supports; `.npmrc` turns on `engine-strict`, so `npm install` stops on older
+versions.
 
 ```sh
 cd site
@@ -35,7 +37,10 @@ npm run check
 `hero-light.png`), the icon (`icon.svg`) and the Open Graph card template (`og.html`).
 `scripts/build-images.sh` regenerates everything in `static/` from them: AVIF and WebP screenshots
 at 1080 and 2160 px wide, a cropped screenshot for phones, the icon, favicons, the touch icon and
-`og.jpg`. It needs ImageMagick with AVIF support, `cwebp` and Google Chrome.
+`og.jpg`. It needs ImageMagick with AVIF support, `cwebp`, and Google Chrome or Chromium. The
+script finds `google-chrome`, `google-chrome-stable`, `chromium` or `chromium-browser` on your
+`PATH`, then Chrome in `/Applications`. Set `CHROME` to the browser's executable to use another
+one.
 
 ```sh
 ./scripts/build-images.sh

site/package-lock.json

@@ -15,6 +15,9 @@
 				"svelte-check": "^4.6.0",
 				"typescript": "^6.0.3",
 				"vite": "^8.3.0"
+			},
+			"engines": {
+				"node": ">=22.17"
 			}
 		},
 		"node_modules/@isaacs/fs-minipass": {

site/package.json

@@ -3,6 +3,9 @@
 	"private": true,
 	"version": "0.0.1",
 	"type": "module",
+	"engines": {
+		"node": ">=22.17"
+	},
 	"scripts": {
 		"dev": "vite dev",
 		"build": "vite build",

site/scripts/build-images.sh

@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 # Regenerate the optimized images in static/ from the sources in assets-src/.
-# Needs ImageMagick (with AVIF), cwebp and Google Chrome (renders the SVG icon and the OG card).
+# Needs ImageMagick (with AVIF), cwebp and Google Chrome or Chromium (renders the SVG icon and the
+# OG card). Set CHROME to the browser's executable if it isn't found.
 set -euo pipefail
 cd "$(dirname "$0")/.."
 
@@ -8,7 +9,20 @@ src=assets-src
 out=static
 tmp=$(mktemp -d)
 trap 'rm -rf "$tmp"' EXIT
-chrome=${CHROME:-"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome"}
+
+chrome=${CHROME:-}
+if [[ -z $chrome ]]; then
+	for candidate in google-chrome google-chrome-stable chromium chromium-browser \
+		"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome"; do
+		if chrome=$(command -v "$candidate"); then
+			break
+		fi
+	done
+fi
+if [[ ! -x $chrome ]]; then
+	echo "build-images.sh: Chrome or Chromium not found; set CHROME to its executable." >&2
+	exit 1
+fi
 
 render() { # render <url> <width> <height> <out.png>
 	"$chrome" --headless=new --disable-gpu --hide-scrollbars --force-device-scale-factor=1 \