Deploy main eacf1e7 to prod

Replaces #559, which conflicted.

Model: opus-5-5

script/assets

@@ -0,0 +1,17 @@
+#!/bin/sh
+# script/assets: extract Alpine.js from its npm package tarball, committed
+# in 3p/, to static/js/alpine.min.js, where go:embed reads it. The package
+# is @alpinejs/csp, Alpine's build for pages whose Content-Security-Policy
+# forbids eval. The extracted file is not committed. make build, make dev
+# and the Dockerfile's lint, test and build stages run this first.
+set -eu
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
+
+main() {
+    cd "$ROOT"
+    tar -xzOf 3p/alpinejs-csp-3.14.9.tgz package/dist/cdn.min.js \
+        >static/js/alpine.min.js
+}
+
+main "$@"