feat: add gx.nvim, comment-box, and machine-local override support

- Add gx.nvim for smart URL opening (GitHub, plugins, package.json, search)
- Add comment-box.nvim with keymaps for creating/deleting comment boxes
- Load machine-local secrets.lua and local.lua from ~/.config/.user-dots/nvim/
- Update README with new plugins, keymaps, and portability highlight

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -13,7 +13,7 @@ A modern, modular, and high-performance Neovim configuration built from scratch
 - **High Performance**: Featuring **blink.cmp** (Rust-based completion) and optimized **Snacks.nvim** components.
 - **AI-Powered**: Native integration with the **GitHub Copilot Language Server**.
 - **User-Centric QoL**: Hybrid line numbers, autosave-on-edit, and seamless system clipboard integration.
-- **Resilient & Portable**: Intelligent terminal title management (Kitty + Fallback) and automatic project root detection.
+- **Resilient & Portable**: Intelligent terminal title management (Kitty + Fallback), automatic project root detection, and machine-local override support.
 - **Lean & Readable**: ~800 lines of Lua code (excluding comments and blanks).
 
 ## 📁 Architecture
@@ -88,6 +88,11 @@ nvim
 | `K` | Hover Documentation |
 | `s` / `S` | Leap Motion (Normal/Window) |
 | `ys` / `ds` / `cs` | Surround (Add/Delete/Change) |
+| `gx` / `gX` | Open URL under cursor (Gx.nvim) |
+| `<leader>cbb` | Create Centered Comment Box |
+| `<leader>cbl` | Create Centered Comment Line |
+| `<leader>cbd` | Delete Comment Box/Line |
+| `<leader>cbk` | Browse Box Style Catalog |
 | `:Q` | Forced Write-All and Quit |
 
 ## 📜 License

init.lua

@@ -34,3 +34,12 @@ require('lazyload')
 require('options')
 require('plugins')
 require('keymaps')
+
+-- Source machine-local and secret overrides (silently ignored if absent)
+local user_dots = vim.fn.expand("~/.config/.user-dots/nvim/")
+for _, file in ipairs({ "secrets.lua", "local.lua" }) do
+  local path = user_dots .. file
+  if vim.fn.filereadable(path) == 1 then
+    dofile(path)
+  end
+end

lua/keymaps.lua

@@ -322,6 +322,14 @@ vim.keymap.set("n", "<leader>uu", "<cmd>UndotreeToggle<cr>", { desc = "Toggle Un
 
 ----------------------------------------------------------
 
+-- Comment Box Keymaps
+vim.keymap.set({ "n", "v" }, "<leader>cbb", "<cmd>CBccbox<cr>", { desc = "Centered Box" })
+vim.keymap.set({ "n", "v" }, "<leader>cbl", "<cmd>CBcline<cr>", { desc = "Centered Line" })
+vim.keymap.set({ "n", "v" }, "<leader>cbd", "<cmd>CBd<cr>", { desc = "Delete Box/Line" })
+vim.keymap.set("n", "<leader>cbk", "<cmd>CBcatalog<cr>", { desc = "Box Style Catalog" })
+
+----------------------------------------------------------
+
 -- Persistence Keymaps
 vim.keymap.set("n", "<leader>qs", function()
 	require("persistence").load()

lua/plugins.lua

@@ -102,7 +102,14 @@ Config.plugins.snacks = {
 		enabled = true,
 		win = {
 			keys = {
-				toggle = { "<c-/>", function(self) self:hide() end, mode = "t", desc = "Toggle Terminal" },
+				toggle = {
+					"<c-/>",
+					function(self)
+						self:hide()
+					end,
+					mode = "t",
+					desc = "Toggle Terminal",
+				},
 			},
 		},
 	},
@@ -172,6 +179,21 @@ lazyload.on_vim_enter(function()
 	vim.pack.add({ { src = "https://github.com/echasnovski/mini.pairs", name = "mini.pairs" } })
 	require("mini.pairs").setup()
 
+	-- Gx.nvim
+	vim.pack.add({ { src = "https://github.com/chrishrb/gx.nvim", name = "gx" } })
+	require("gx").setup({
+		handlers = {
+			plugin = true,
+			github = true,
+			package_json = true,
+			search = true,
+		},
+	})
+
+	-- Comment-box.nvim
+	vim.pack.add({ { src = "https://github.com/LudoPinelli/comment-box.nvim", name = "comment-box" } })
+	require("comment-box").setup()
+
 	-- Undotree
 	vim.g.undotree_ShortIndicators = 0
 	vim.g.undotree_SplitWidth = 32

nvim-pack-lock.json

@@ -12,10 +12,18 @@
       "rev": "426dbebe06b5c69fd846ceb17b42e12f890aedf1",
       "src": "https://github.com/catppuccin/nvim"
     },
+    "comment-box": {
+      "rev": "06bb771690bc9df0763d14769b779062d8f12bc5",
+      "src": "https://github.com/LudoPinelli/comment-box.nvim"
+    },
     "conform": {
       "rev": "086a40dc7ed8242c03be9f47fbcee68699cc2395",
       "src": "https://github.com/stevearc/conform.nvim"
     },
+    "cord.nvim": {
+      "rev": "0be090969e978f7442870ef227e09eff7bf3480d",
+      "src": "https://github.com/vyfor/cord.nvim"
+    },
     "flash": {
       "rev": "fcea7ff883235d9024dc41e638f164a450c14ca2",
       "src": "https://github.com/folke/flash.nvim"
@@ -36,6 +44,10 @@
       "rev": "21604255d0e8f9968322f61f2b6c09e5efe1285a",
       "src": "https://github.com/MagicDuck/grug-far.nvim"
     },
+    "gx": {
+      "rev": "ba9c408fc0130fc4548760c3933a81b58fc50de8",
+      "src": "https://github.com/chrishrb/gx.nvim"
+    },
     "inc-rename": {
       "rev": "0074b551a17338ccdcd299bd86687cc651bcb33d",
       "src": "https://github.com/smjonas/inc-rename.nvim"