refactor: Dockerfile.embed → Dockerfile + fix Login TS error

- Dockerfile.embed 重命名为 Dockerfile（统一命名规范）
- docker-compose.yml / run.sh 引用更新
- 全量文档（CLAUDE/AGENTS/README/docs）Dockerfile.embed → Dockerfile
- fix: Login.tsx User 类型缺少 email/status 字段

frontend/src/components/auth/Login.tsx

@@ -34,7 +34,7 @@ export function Login() {
     setError('');
     setLoading(true);
     try {
-      const result = await authApi.login(username, password) as { user: { id: number; username: string }; token: string; permissions?: string[] };
+      const result = await authApi.login(username, password) as { user: { id: number; username: string; email: string; status: number }; token: string; permissions?: string[] };
       useUserStore.getState().login(result.user, result.token, result.permissions ?? null);
       localStorage.setItem('token', result.token);
       navigate('/', { replace: true });