fix: Docker 构建改用 npm 替代 pnpm + 补全 OAuth/Redis 环境变量

- Dockerfile 全部改为 npm install + 全局 tsc，解决 pnpm 符号链接问题
- docker-compose 添加 Redis 服务、OAuth 环境变量透传、web 端口改为可配置
- MCP URL 改用 window.location.origin 适配反向代理
- tsconfig 添加 paths 映射解决 Docker 内模块引用

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/mcp/tsconfig.json

@@ -2,7 +2,11 @@
   "extends": "../../tsconfig.base.json",
   "compilerOptions": {
     "outDir": "dist",
-    "rootDir": "src"
+    "rootDir": "src",
+    "baseUrl": ".",
+    "paths": {
+      "@agent-fox/shared": ["../shared/dist"]
+    }
   },
   "include": ["src"]
 }