macOS 14.6下Homebrew安装的rbenv位置查询及相关问题求助

我在macOS 14.6上用Homebrew装了rbenv，结果找遍了常规路径都找不到它的实际执行文件，心态快崩了！

先给大伙看看我试过的命令和对应的结果：

首先检查用户根目录下的默认rbenv路径：

% ls -la ~/.rbenv
ls: /Users/`whoami`/.rbenv: No such file or directory

接着检查/usr/local下的常见位置：

% ls -la  /usr/local/rbenv 
ls: /usr/local/rbenv: No such file or directory

最离谱的是Homebrew的输出——它明明显示rbenv已经安装完成，给了一堆详细信息，但就是找不到能实际用的rbenv程序：

% /opt/homebrew/bin/brew info rbenv
==> rbenv: stable 1.3.0 (bottled), HEAD
Ruby version manager
https://rbenv.org
Installed
/opt/homebrew/Cellar/rbenv/1.3.0 (36 files, 73.6KB) *
  Poured from bottle using the formulae.brew.sh API on 2024-10-03 at 19:06:03
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/r/rbenv.rb
License: MIT
==> Dependencies
Required: ruby-build ✔
==> Options
--HEAD
    Install HEAD version
==> Caveats
zsh completions have been installed to:
  /opt/homebrew/share/zsh/site-functions
==> Analytics
install: 69,942 (30 days), 212,547 (90 days), 336,817 (365 days)
install-on-request: 69,903 (30 days), 212,173 (90 days), 335,926 (365 days)
build-error: 0 (30 days)

（此处省略一万句发自肺腑的吐槽）

我（自认为）没装过一大堆Ruby版本，但现在Homebrew咬死说rbenv已经装好了，可我既找不到它的实际位置，也没法用它来管理Ruby版本。有没有大佬能帮我捋清楚这到底是咋回事？怎么才能正常用上这个rbenv？

备注：内容来源于stack exchange，提问作者user3544438