```

refactor(generate_ssl.sh): 优化变量声明和去重逻辑

- 将局部变量声明与赋值分离，提高脚本可读性
- 使用mapfile命令替代数组赋值，优化去重逻辑
- 改进代码结构，使变量定义更清晰
```

辅助工具/脚本工具/服务器ssl证书生成/generate_ssl.sh

@@ -164,7 +164,8 @@ inject_into_nginx_conf(){
     warn "跳过：配置文件不存在： $conf"
     return 1
   fi
-  local backup="${conf}.bak.$(date +%s)"
+  local backup
+  backup="${conf}.bak.$(date +%s)"
   cp "$conf" "$backup"
   info "已备份原配置到： $backup"
 
@@ -188,8 +189,10 @@ inject_into_nginx_conf(){
   conf_dir=$(dirname "$conf")
   local cert_store_dir="$conf_dir/certs"
   mkdir -p "$cert_store_dir"
-  local src_key="$(pwd)/${KEY_FILE}"
-  local src_crt="$(pwd)/${CRT_FILE}"
+  local src_key
+  src_key="$(pwd)/${KEY_FILE}"
+  local src_crt
+  src_crt="$(pwd)/${CRT_FILE}"
   local dest_key="$cert_store_dir/server.key"
   local dest_crt="$cert_store_dir/server.crt"
   if [ -f "$src_key" ]; then
@@ -269,7 +272,7 @@ inject_into_nginx_conf(){
 
     # 去重
     if [ ${#DOCKER_TARGETS[@]} -gt 0 ]; then
-      unique_targets=($(printf "%s\n" "${DOCKER_TARGETS[@]}" | awk '!x[$0]++'))
+      mapfile -t unique_targets < <(printf "%s\n" "${DOCKER_TARGETS[@]}" | awk '!x[$0]++')
       for ct in "${unique_targets[@]}"; do
         info "尝试在容器 $ct 内重载 nginx（优先尝试 nginx -t && nginx -s reload）"
         if docker exec "$ct" /usr/local/nginx/sbin/nginx -t >/dev/null 2>&1; then