feat: add one-click preview and deploy scripts

package.json

@@ -5,7 +5,8 @@
   "scripts": {
     "build": "hexo generate",
     "clean": "hexo clean",
-    "deploy": "hexo deploy",
+    "preview": "bash scripts/blog.sh preview",
+    "deploy": "bash scripts/blog.sh deploy",
     "server": "hexo server"
   },
   "hexo": {

scripts/blog.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+PORT="${PORT:-4000}"
+HOST="${HOST:-127.0.0.1}"
+BRANCH="${BRANCH:-main}"
+
+usage() {
+  cat <<'EOF'
+用法:
+  ./scripts/blog.sh preview   # 一键预览环境
+  ./scripts/blog.sh deploy    # 一键构建 + 提交 + 推送到自建 git
+
+可选环境变量:
+  PORT=4000   预览端口
+  HOST=127.0.0.1  预览监听地址
+  BRANCH=main  推送分支
+EOF
+}
+
+preview() {
+  echo "[preview] clean + start hexo server on ${HOST}:${PORT}"
+  npx hexo clean
+  exec npx hexo server -i "${HOST}" -p "${PORT}"
+}
+
+deploy() {
+  echo "[deploy] clean + generate"
+  npx hexo clean
+  npx hexo generate
+
+  echo "[deploy] git add"
+  git add -A
+
+  if git diff --cached --quiet; then
+    echo "[deploy] 没有可提交的改动，跳过 commit/push"
+    exit 0
+  fi
+
+  if git diff --cached --quiet --ignore-submodules --exit-code; then
+    : # keep shellcheck calm
+  fi
+
+  if ! git rev-parse --verify HEAD >/dev/null 2>&1; then
+    git commit -m "chore: deploy blog"
+  else
+    git commit -m "chore: deploy blog $(date '+%F %T')"
+  fi
+
+  echo "[deploy] push origin ${BRANCH}"
+  git push origin "${BRANCH}"
+}
+
+case "${1:-}" in
+  preview) preview ;;
+  deploy) deploy ;;
+  -h|--help|help|"") usage ;;
+  *)
+    echo "未知命令: $1" >&2
+    usage
+    exit 1
+    ;;
+esac