feat: add markdown editing, preview, and math-aware writing support

README.md

@@ -42,7 +42,7 @@ Or manually install dependencies:
 
 ```sh
 sudo pkg update -f
-sudo pkg install -y git gmake unzip llvm ripgrep fd-find tree-sitter stylua base64-by-elvis
+sudo pkg install -y git gmake unzip llvm ripgrep fd-find tree-sitter stylua base64-by-elvis node npm
 ```
 
 **Note:** `lua-language-server` is not available in FreeBSD pkg repositories, so LSP support for Lua is disabled in this config.
@@ -58,6 +58,7 @@ sudo pkg install -y git gmake unzip llvm ripgrep fd-find tree-sitter stylua base
 - Language Setup:
   - If you want to write Typescript, you need `npm`
   - If you want to write Golang, you will need `go`
+  - If you want markdown live preview, you need `node` and `npm`
   - etc.
 
 ### Install Kickstart.nvim-FreeBSD
@@ -104,6 +105,12 @@ Wait for plugins to finish installing, then restart Neovim.
 
 Read through the `init.lua` file in your configuration folder for more information about extending and exploring Neovim.
 
+#### Markdown Writing
+
+This config includes built-in support for editing and previewing technical articles:
+- **Syntax & Math Highlighting**: `vim-markdown` handles syntax highlighting, frontmatter, and math support. Single `$...$` and double `$$...$$` math syntax is fully supported for highlight and structure awareness. Note that the actual math rendering happens in the browser preview.
+- **Live Preview**: Toggle a live browser preview with `<leader>mp` (runs `:MarkdownPreviewToggle`). This relies on `markdown-preview.nvim` which requires `node` and `npm` installed.
+
 ### FAQ
 
 * What should I do if I already have a pre-existing Neovim configuration?

init.lua

@@ -213,6 +213,8 @@ vim.keymap.set('n', '<C-k>', '<C-w><C-k>', { desc = 'Move focus to the upper win
 -- vim.keymap.set("n", "<C-S-j>", "<C-w>J", { desc = "Move window to the lower" })
 -- vim.keymap.set("n", "<C-S-k>", "<C-w>K", { desc = "Move window to the upper" })
 
+vim.keymap.set('n', '<leader>mp', ':MarkdownPreviewToggle<CR>', { desc = '[M]arkdown [P]review toggle' })
+
 -- [[ Basic Autocommands ]]
 --  See `:help lua-guide-autocommands`
 
@@ -912,6 +914,26 @@ require('lazy').setup({
   -- Highlight todo, notes, etc in comments
   { 'folke/todo-comments.nvim', event = 'VimEnter', dependencies = { 'nvim-lua/plenary.nvim' }, opts = { signs = false } },
 
+  -- Markdown editing + live preview + math-aware writing
+  {
+    'preservim/vim-markdown',
+    ft = { 'markdown' },
+    init = function()
+      vim.g.vim_markdown_math = 1
+      vim.g.vim_markdown_frontmatter = 1
+      vim.g.vim_markdown_folding_disabled = 1
+    end,
+  },
+
+  {
+    'iamcco/markdown-preview.nvim',
+    cmd = { 'MarkdownPreviewToggle', 'MarkdownPreview', 'MarkdownPreviewStop' },
+    ft = { 'markdown' },
+    build = function()
+      vim.fn['mkdp#util#install']()
+    end,
+  },
+
   { -- Collection of various small independent plugins/modules
     'echasnovski/mini.nvim',
     config = function()

install-freebsd.sh

@@ -22,8 +22,8 @@ echo "[2/5] Installing core dependencies (git, make, unzip, clang)..."
 pkg install -y base64 git gmake unzip llvm
 
 # Development tools
-echo "[3/5] Installing development tools (ripgrep, fd)..."
+echo "[3/5] Installing development tools (ripgrep, fd, node, npm)..."
-pkg install -y ripgrep fd-find
+pkg install -y ripgrep fd-find node npm
 
 # Tree-sitter for syntax highlighting
 echo "[4/5] Installing tree-sitter..."