feat: 添加云端部署准备工作

- 添加 .env.example 环境变量模板
- 创建部署辅助脚本（run_crawler.sh、health_check.sh、backup.sh）
- 更新 .gitignore 排除备份目录
- 添加云端部署指南文档

scripts/backup.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+# 数据备份脚本
+# 用于备份重要数据
+
+# 获取脚本所在目录
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+cd "$PROJECT_DIR"
+
+echo "=========================================="
+echo "开始备份: $(date '+%Y-%m-%d %H:%M:%S')"
+echo "=========================================="
+
+# 配置
+BACKUP_DIR="${PROJECT_DIR}/backups"
+DATE=$(date +"%Y%m%d_%H%M%S")
+KEEP_DAYS=30
+
+# 创建备份目录
+mkdir -p "$BACKUP_DIR"
+
+echo "备份目录: $BACKUP_DIR"
+echo "备份日期: $DATE"
+echo ""
+
+# 1. 备份数据目录
+echo "[1/3] 备份数据目录..."
+if [ -d "data" ]; then
+    DATA_BACKUP_FILE="${BACKUP_DIR}/data_${DATE}.tar.gz"
+    tar -czf "$DATA_BACKUP_FILE" data/
+    echo "✅ 数据备份完成: $DATA_BACKUP_FILE"
+    echo "   文件大小: $(du -h "$DATA_BACKUP_FILE" | cut -f1)"
+else
+    echo "⚠️  data目录不存在，跳过数据备份"
+fi
+
+# 2. 备份日志目录（可选）
+echo ""
+echo "[2/3] 备份日志目录..."
+if [ -d "logs" ]; then
+    LOGS_BACKUP_FILE="${BACKUP_DIR}/logs_${DATE}.tar.gz"
+    tar -czf "$LOGS_BACKUP_FILE" logs/
+    echo "✅ 日志备份完成: $LOGS_BACKUP_FILE"
+    echo "   文件大小: $(du -h "$LOGS_BACKUP_FILE" | cut -f1)"
+else
+    echo "⚠️  logs目录不存在，跳过日志备份"
+fi
+
+# 3. 清理旧备份
+echo ""
+echo "[3/3] 清理${KEEP_DAYS}天前的旧备份..."
+OLD_BACKUPS=$(find "$BACKUP_DIR" -name "*.tar.gz" -mtime +${KEEP_DAYS} -print | wc -l)
+if [ "$OLD_BACKUPS" -gt 0 ]; then
+    find "$BACKUP_DIR" -name "*.tar.gz" -mtime +${KEEP_DAYS} -delete
+    echo "✅ 已删除 ${OLD_BACKUPS} 个旧备份文件"
+else
+    echo "✅ 没有需要清理的旧备份"
+fi
+
+# 统计
+echo ""
+echo "=========================================="
+echo "备份完成: $(date '+%Y-%m-%d %H:%M:%S')"
+echo "备份文件数量: $(ls -1 "$BACKUP_DIR"/*.tar.gz 2>/dev/null | wc -l)"
+echo "总备份大小: $(du -sh "$BACKUP_DIR" 2>/dev/null | cut -f1)"
+echo "=========================================="
+
+echo ""
+echo "✅ 备份任务完成！"
+exit 0