refactor: 品牌重塑 my-app → Alfred·阿福

将项目从模板标识 my-app 全部替换为产品标识 Alfred·阿福，
去掉所有模板措辞，文档语态转为产品视角。

核心标识替换：
- name: my-app → alfred
- title: My App → Alfred·阿福
- subtitle: Bun 全栈应用 → 智能信息处理中枢
- description: 全栈开发框架 → 基于 AI 的信息综合处理平台
- 日志路径: my-app.log → alfred.log
- 构建产物: dist/my-app → dist/alfred（由 APP.name 自动适配）

文档更新：
- README.md 重写为产品介绍
- docs/README.md 去掉模板段落
- docs/user/ 从模板使用指南改为产品手册
- docs/development/ 标识替换 + 去模板措辞
- openspec/config.yaml 去模板项目描述
- LICENSE 填入 Copyright 2025 lanyuanxiaoyao

LICENSE

@@ -1,3 +1,19 @@
+Copyright 2025 lanyuanxiaoyao
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+---
+
 Apache License
 Version 2.0, January 2004
 http://www.apache.org/licenses/