Add standalone Neovim Lua config

Replace the neovim stow package's symlink into vim/.vim with a real,
independent Lua config: init.lua + lua/config/* (options, keymaps,
autocmds, lazy.nvim bootstrap) + lua/plugins/*.lua (one file per plugin
group).

- Plugin manager: lazy.nvim (self-bootstrapping, no submodule needed).
- Carries over every plugin from the vimrc as-is: vim-airline (+ themes,
  tmuxline), vim-janah colorscheme, nerdtree, vim-signify, nerdcommenter,
  ale, vim-fugitive, quick-scope, ctrlp.vim, claude-code.nvim, plus
  vim-ansible-yaml/vim-terraform gated the same way the vimrc gated them
  (executable() checks, now as lazy.nvim `cond` functions).
- Replaces YouCompleteMe + jedi-vim entirely with nvim-lspconfig +
  mason.nvim + mason-lspconfig.nvim (ensure_installed: pyright, lua_ls,
  bashls, terraformls, yamlls, ts_ls, cssls, html; clangd enabled
  directly since it's already on PATH via Xcode CLT) and blink.cmp for
  completion (+ friendly-snippets), with blink's LSP capabilities merged
  into every server's default config.
- ALE stays as a pure linter/fixer (g:ale_disable_lsp = 1) so it doesn't
  duplicate nvim-lspconfig's diagnostics/hover/go-to-definition.
- Ports the vimrc's general settings/functions (options, window-nav
  keymaps, arrow-key disabling, StripTrailingWhitespace, AppendModeline,
  the git->Git abbreviation) to Lua; drops the w!! sudo-save abbreviation
  (vimrc's own comment notes it doesn't work under Neovim) and the
  reload-vimrc-on-save autocmd (no clean Lua equivalent).

Vim's own vimrc, ftplugin/python.vim, and plugin installs are completely
untouched and unaffected by this change.

11 files changed, 172 insertions, 0 deletions

diff --git a/neovim/.config/nvim/lua/plugins/ale.lua b/neovim/.config/nvim/lua/plugins/ale.lua
new file mode 100644
index 0000000..10a680c
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/ale.lua
@@ -0,0 +1,9 @@
+return {
+  "dense-analysis/ale",
+  event = { "BufReadPre", "BufNewFile" },
+  init = function()
+    -- nvim-lspconfig owns LSP-protocol features (diagnostics, hover,
+    -- go-to-definition) here; keep ALE to its own linters/fixers only.
+    vim.g.ale_disable_lsp = 1
+  end,
+}
diff --git a/neovim/.config/nvim/lua/plugins/claude-code.lua b/neovim/.config/nvim/lua/plugins/claude-code.lua
new file mode 100644
index 0000000..0390852
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/claude-code.lua
@@ -0,0 +1,8 @@
+return {
+  "greggh/claude-code.nvim",
+  dependencies = { "nvim-lua/plenary.nvim" },
+  cmd = { "ClaudeCode", "ClaudeCodeContinue", "ClaudeCodeResume", "ClaudeCodeVerbose" },
+  config = function()
+    require("claude-code").setup({ window = { position = "vertical botright" } })
+  end,
+}
diff --git a/neovim/.config/nvim/lua/plugins/colorscheme.lua b/neovim/.config/nvim/lua/plugins/colorscheme.lua
new file mode 100644
index 0000000..457dc71
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/colorscheme.lua
@@ -0,0 +1,11 @@
+return {
+  "mhinz/vim-janah",
+  lazy = false,
+  priority = 1000,
+  config = function()
+    local ok = pcall(vim.cmd.colorscheme, "janah")
+    if not ok then
+      vim.cmd.colorscheme("desert")
+    end
+  end,
+}
diff --git a/neovim/.config/nvim/lua/plugins/completion.lua b/neovim/.config/nvim/lua/plugins/completion.lua
new file mode 100644
index 0000000..9eed355
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/completion.lua
@@ -0,0 +1,11 @@
+return {
+  "saghen/blink.cmp",
+  version = "*", -- use a release with a prebuilt fuzzy-matcher binary
+  dependencies = { "rafamadriz/friendly-snippets" },
+  opts = {
+    keymap = { preset = "super-tab" },
+    sources = {
+      default = { "lsp", "path", "snippets", "buffer" },
+    },
+  },
+}
diff --git a/neovim/.config/nvim/lua/plugins/editing.lua b/neovim/.config/nvim/lua/plugins/editing.lua
new file mode 100644
index 0000000..c1d5567
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/editing.lua
@@ -0,0 +1,13 @@
+return {
+  {
+    "preservim/nerdcommenter",
+    init = function()
+      vim.g.NERDSpaceDelims = 1
+      vim.g.NERDCompactSexyComs = 1
+      vim.g.NERDDefaultAlign = "left"
+      vim.g.NERDCommentEmptyLines = 1
+      vim.g.NERDTrimTrailingWhitespace = 1
+    end,
+  },
+  "unblevable/quick-scope",
+}
diff --git a/neovim/.config/nvim/lua/plugins/filetree.lua b/neovim/.config/nvim/lua/plugins/filetree.lua
new file mode 100644
index 0000000..cdee9f7
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/filetree.lua
@@ -0,0 +1,33 @@
+return {
+  "preservim/nerdtree",
+  lazy = false,
+  config = function()
+    -- Open NERDTree when no file is specified; quit when it's the last window
+    local augroup = vim.api.nvim_create_augroup("nerdtree_auto", { clear = true })
+
+    vim.api.nvim_create_autocmd("StdinReadPre", {
+      group = augroup,
+      callback = function()
+        vim.g.std_in = 1
+      end,
+    })
+
+    vim.api.nvim_create_autocmd("VimEnter", {
+      group = augroup,
+      callback = function()
+        if vim.fn.argc() == 0 and vim.g.std_in == nil then
+          vim.cmd("NERDTree")
+        end
+      end,
+    })
+
+    vim.api.nvim_create_autocmd("BufEnter", {
+      group = augroup,
+      callback = function()
+        if vim.fn.winnr("$") == 1 and vim.bo.filetype == "nerdtree" then
+          vim.cmd("quit")
+        end
+      end,
+    })
+  end,
+}
diff --git a/neovim/.config/nvim/lua/plugins/fuzzyfinder.lua b/neovim/.config/nvim/lua/plugins/fuzzyfinder.lua
new file mode 100644
index 0000000..444d9ff
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/fuzzyfinder.lua
@@ -0,0 +1,10 @@
+return {
+  "ctrlpvim/ctrlp.vim",
+  init = function()
+    -- Use ripgrep for listing files (fast, respects .gitignore)
+    if vim.fn.executable("rg") == 1 then
+      vim.g.ctrlp_user_command = 'rg %s --files --color=never --glob ""'
+      vim.g.ctrlp_use_caching = 0
+    end
+  end,
+}
diff --git a/neovim/.config/nvim/lua/plugins/git.lua b/neovim/.config/nvim/lua/plugins/git.lua
new file mode 100644
index 0000000..8402905
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/git.lua
@@ -0,0 +1,4 @@
+return {
+  "tpope/vim-fugitive",
+  "mhinz/vim-signify",
+}
diff --git a/neovim/.config/nvim/lua/plugins/langs.lua b/neovim/.config/nvim/lua/plugins/langs.lua
new file mode 100644
index 0000000..7bf22d4
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/langs.lua
@@ -0,0 +1,14 @@
+return {
+  {
+    "chase/vim-ansible-yaml",
+    cond = function()
+      return vim.fn.executable("ansible") == 1
+    end,
+  },
+  {
+    "hashivim/vim-terraform",
+    cond = function()
+      return vim.fn.executable("terraform") == 1
+    end,
+  },
+}
diff --git a/neovim/.config/nvim/lua/plugins/lsp.lua b/neovim/.config/nvim/lua/plugins/lsp.lua
new file mode 100644
index 0000000..0463dde
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/lsp.lua
@@ -0,0 +1,36 @@
+return {
+  "mason-org/mason-lspconfig.nvim",
+  dependencies = {
+    { "mason-org/mason.nvim", opts = {} },
+    "neovim/nvim-lspconfig",
+    "saghen/blink.cmp",
+  },
+  opts = {
+    ensure_installed = {
+      "pyright",
+      "lua_ls",
+      "bashls",
+      "terraformls",
+      "yamlls",
+      "ts_ls",
+      "cssls",
+      "html",
+    },
+    -- default true: auto-calls vim.lsp.enable() for every Mason-installed
+    -- server as it finishes installing.
+  },
+  config = function(_, opts)
+    -- Merge blink.cmp's LSP capabilities into every server's default config
+    -- (Mason-managed or not) before any server gets enabled.
+    vim.lsp.config("*", {
+      capabilities = require("blink.cmp").get_lsp_capabilities(),
+    })
+
+    require("mason-lspconfig").setup(opts)
+
+    -- clangd ships with Xcode Command Line Tools already, so it's not
+    -- Mason-managed — nvim-lspconfig provides its default config, we just
+    -- need to turn it on.
+    vim.lsp.enable("clangd")
+  end,
+}
diff --git a/neovim/.config/nvim/lua/plugins/statusline.lua b/neovim/.config/nvim/lua/plugins/statusline.lua
new file mode 100644
index 0000000..b93b34c
--- /dev/null
+++ b/neovim/.config/nvim/lua/plugins/statusline.lua
@@ -0,0 +1,23 @@
+return {
+  "bling/vim-airline",
+  lazy = false,
+  dependencies = {
+    "vim-airline/vim-airline-themes",
+    "edkolev/tmuxline.vim",
+  },
+  init = function()
+    -- On arch linux install the following:
+    -- otf-powerline-symbols-git
+    -- powerline-fonts-git
+    vim.g.airline_powerline_fonts = 1
+    vim.g["airline#extensions#tabline#enabled"] = 1
+
+    -- vim.g dict reads return a copy, not a live reference, so the nested
+    -- field has to be set via a local table and reassigned.
+    local symbols = vim.g.airline_symbols or {}
+    symbols.space = "\u{a0}"
+    vim.g.airline_symbols = symbols
+
+    vim.opt.laststatus = 2
+  end,
+}