ops: add production observability and recovery

infra/scripts/verify-backup.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+set -eu
+
+if [ "$#" -ne 1 ]; then
+  echo "用法：$0 <backup-directory>" >&2
+  exit 2
+fi
+
+TARGET=$(CDPATH= cd -- "$1" && pwd)
+for file in SHA256SUMS postgres.dump postgres.contents minio-data.tar.gz manifest.txt; do
+  if [ ! -f "$TARGET/$file" ]; then
+    echo "备份缺少文件：$file" >&2
+    exit 3
+  fi
+done
+
+(
+  cd "$TARGET"
+  sha256sum -c SHA256SUMS
+)
+
+echo "备份校验通过：$TARGET"