backend: require confirmation for signed channel updates [CI]

ci/publish-release-offer.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+# CI 发布 webhook：镜像已推送成功后，签名并登记清单。面板不会因此自动重启 Backend。
+set -euo pipefail
+component="${1:?component}"; repository="${2:?repository}"; digest="${3:?digest}"; tag="${4:?tag}"; channel="${5:?channel}"; outdir="${6:?outdir}"
+[[ -n "${RELEASE_SIGNING_KEY:-}" ]] || { echo "release signing is not configured; no update offer published"; exit 0; }
+root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+bash "$root/ci/release-manifest.sh" "$component" "$repository" "$digest" "$tag" "$channel" "$outdir"
+if [[ -n "${RELEASE_API_URL:-}" && -n "${RELEASE_API_TOKEN:-}" ]]; then
+  python3 -c 'import json,sys; print(json.dumps({"manifest": open(sys.argv[1]).read(), "signature": open(sys.argv[2]).read()}))' \
+    "$outdir/manifest.json" "$outdir/manifest.sig" > "$outdir/payload.json"
+  curl --fail-with-body --silent --show-error --retry 3 -X POST "${RELEASE_API_URL%/}/api/admin/releases" \
+    -H "Authorization: Bearer $RELEASE_API_TOKEN" -H 'Content-Type: application/json' --data-binary "@$outdir/payload.json" >/dev/null
+  echo "registered the signed $component release with the panel ($channel)"
+fi