[idea] Auto-enter insert mode when navigating into a terminal buffer

[stanfish06]

What

Add a BufEnter/WinEnter autocmd that automatically switches to insert (terminal) mode whenever the cursor lands in a terminal buffer. This removes the need to press i every time you return to the <leader>, terminal split.

Where

lua/config/options.lua — near the existing terminal keymap (<leader>, and <Esc><Esc> at lines 20–21).

Why it matters

The config opens a terminal with <leader>, and exits terminal mode with <Esc><Esc>. The missing ergonomic link is re-entry: after switching to another window and back, you always have to press i to resume typing. With H/L buffer cycling and <C-w> window switching both active, re-entering insert mode manually gets repetitive.

Suggested implementation

vim.api.nvim_create_autocmd({ "BufEnter", "WinEnter" }, {
    callback = function()
        if vim.bo.buftype == "terminal" then
            vim.cmd("startinsert")
        end
    end,
})

Notes

• This does not affect <Esc><Esc> — that keymap exits terminal mode to normal mode within the terminal buffer, and the autocmd only fires on buffer/window enter, not on mode changes.
• If the terminal is used for reading output (e.g. after :Compile), the auto-insert can be briefly annoying. A guard like if vim.fn.mode() ~= 'n' then return end or a buffer-local opt-out (similar to the format-on-save toggle pattern) could mitigate this.