[FEATURE] autocmd event to set up keybinds on the buffer

Feature Description

I want an autocmd User event for addding specific keybind on the claude code buffer.

Use Case

I want to toggle claudecode buffer with some keymap when the mode is terminal insert mode.

Proposed Solution

ugaterm.nvim has this feature.

https://github.com/uga-rosa/ugaterm.nvim/commit/c12135abec935e2b78e99d710bbe9c7a690ab36e

With this event, I can add autocmds like this, and can close ugaterm buffer from terminal insert mode with just hitting <Esc><Esc>.

vim.api.nvim_create_autocmd('User',
  {
    pattern = 'UgatermEnter',
    callback =
        function(args)
          vim.keymap.set('t', '<Esc>', '<C-\\><C-n>', { buffer = args.buf })
          vim.keymap.set('n', '<Esc>', '<cmd>UgatermHide<CR>', { buffer = args.buf })
        end
  })

首先检查 plugin 现有的 Claude Code 缓冲区设置，以及 issue 中链接的拟议 ugaterm.nvim 提交。确定缓冲区是在何处创建或进入的，在那里添加所请求的 User autocmd 行为，并验证是否可以通过所示的 callback 模式注册缓冲区本地的终端和普通模式键映射。