[audit] Fix deprecated buffer key in vim.keymap.set opts (Neovim 0.12)

[stanfish06]

What

Neovim 0.12 deprecates the buffer option key in vim.keymap.set() / vim.keymap.del() in favour of buf.

Where

lua/config/plugin_config.lua:112 — inside the LspAttach autocmd callback:

-- before
local opts = { buffer = ev.buf }

-- after
local opts = { buf = ev.buf }

Why it matters

The config targets Neovim 0.12+ (uses vim.pack, vim.lsp.config, vim.lsp.enable, completeopt = "fuzzy", winborder, all 0.11/0.12 APIs). Using the deprecated buffer key will produce a deprecation warning in 0.12 and will stop working in a future release once the key is removed.

Change

One-line rename: buffer = ev.buf → buf = ev.buf in the opts table passed to vim.keymap.set("n", "gd", ...).

References

• Neovim 0.12 release notes: :help news-0.12 → vim.keymap section
• deprecated.txt: vim.keymap.set()/del() buffer option → buf

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Generated by Claude Code

[stanfish06]

@claude , make it backward compatible, not all of my machines are on v12

[claude]

Claude finished @stanfish06's task in 52s —— View job

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Backward-compatible buf/buffer key

• Gather context — read lua/config/plugin_config.lua:112
• Understand request — make buf/buffer key work on both <0.12 and 0.12+
• Implement backward-compatible version check
• Commit and push

Change applied (lua/config/plugin_config.lua:112):

-- before
local opts = { buf = ev.buf }

-- after
local opts = vim.fn.has('nvim-0.12') == 1 and { buf = ev.buf } or { buffer = ev.buf }

vim.fn.has('nvim-0.12') returns 1 on Neovim 0.12+ and 0 on older versions, so buf is used where it's expected and buffer is used as the fallback on older installs.
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