Require release notes for each version bump

scripts/update_release_notes.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+TARGET_FILE="$ROOT_DIR/website/assets/meta/release-notes.txt"
+
+release_notes="${RELEASE_NOTES:-}"
+release_notes_file="${RELEASE_NOTES_FILE:-}"
+
+if [[ -n "$release_notes_file" ]]; then
+  if [[ ! -f "$release_notes_file" ]]; then
+    echo "RELEASE_NOTES_FILE does not exist: $release_notes_file" >&2
+    exit 1
+  fi
+  cp "$release_notes_file" "$TARGET_FILE"
+elif [[ -n "$release_notes" ]]; then
+  printf '%s\n' "$release_notes" > "$TARGET_FILE"
+else
+  echo "Release notes are required. Use RELEASE_NOTES='- item 1\n- item 2' or RELEASE_NOTES_FILE=/path/to/file." >&2
+  exit 1
+fi
+
+echo "Release notes updated"