docs(migration): 添加清渊传奇PHP到Vue+Node.js移植计划文档

- 新增 MIGRATION.md 详细记录PHP到Node.js架构迁移方案
- 包含项目背景、现有资产盘点、架构设计、任务清单等完整规划
- 记录后端补全、前端补全、PHP停用、部署运维四个阶段实施计划
- 提供技术决策、数据库说明、进度总览等关键信息
- 更新 .gitignore 添加 *_out.txt build_output.txt 构建输出文件过滤
- 修复 utils.js 路径引用问题确保代码正常运行

module/web/build_output.txt

@@ -1,27 +0,0 @@
-npm warn Unknown user config "home". This will stop working in the next major version of npm.
-vite v7.3.1 building client environment for production...
-<script src="/static/js/md5.js"> in "/index.html" can't be bundled without type="module" attribute
-<script src="/static/js/common.js?v=1"> in "/index.html" can't be bundled without type="module" attribute
-transforming...
-✓ 1670 modules transformed.
-rendering chunks...
-computing gzip size...
-dist/index.html                          1.05 kB │ gzip:   0.49 kB
-dist/assets/agree-BLQpfDVx.css           1.37 kB │ gzip:   0.46 kB
-dist/assets/linuxdo-bind-DPWWajSf.css    1.77 kB │ gzip:   0.53 kB
-dist/assets/withdraw-DqWlBzRo.css        3.60 kB │ gzip:   0.81 kB
-dist/assets/login-BlSp8Yei.css           4.29 kB │ gzip:   1.16 kB
-dist/assets/index-KHprj2W-.css         378.12 kB │ gzip:  53.06 kB
-dist/assets/agree-C-28jhbg.js            0.92 kB │ gzip:   0.63 kB
-dist/assets/linuxdo-bind-CFqSeBhv.js     2.55 kB │ gzip:   1.25 kB
-dist/assets/index-7GZNUh9s.js            3.66 kB │ gzip:   1.94 kB
-dist/assets/withdraw-09hftHnJ.js         4.85 kB │ gzip:   2.24 kB
-dist/assets/login-kOeQ-hLG.js            6.67 kB │ gzip:   2.60 kB
-dist/assets/request-CitDfMDA.js         37.58 kB │ gzip:  15.14 kB
-dist/assets/index-DjlCHBNb.js          988.31 kB │ gzip: 326.73 kB
-
-(!) Some chunks are larger than 500 kB after minification. Consider:
-- Using dynamic import() to code-split the application
-- Use build.rollupOptions.output.manualChunks to improve chunking: https://rollupjs.org/configuration-options/#output-manualchunks
-- Adjust chunk size limit for this warning via build.chunkSizeWarningLimit.
-✓ built in 17.40s