Markdown language configuration

-- From lua/plugins/languages/markdown.lua:2
{
  "MeanderingProgrammer/render-markdown.nvim",
  ft = { "markdown", "mdx" },
  dependencies = { "nvim-treesitter/nvim-treesitter", "nvim-mini/mini.nvim" },
  opts = {
    file_types = { "markdown", "mdx" },
    html = {
      render_modes = true,
    },
  },
}

-- From lua/plugins/languages/markdown.lua:13
pcall(vim.treesitter.language.register, "markdown", "mdx")

-- From lua/plugins/languages/markdown.lua:19
{
  "davidmh/mdx.nvim",
  lazy = false,
  dependencies = { "nvim-treesitter/nvim-treesitter" },
}

# My Document

This is regular markdown.

<CustomComponent prop="value">
  With JSX components!
</CustomComponent>

## More markdown

Back to regular markdown.

-- From lua/plugins/lsp/init.lua:53
-- TODO: Re-enable markdown_oxide when needed
-- "markdown_oxide", -- Markdown

cargo install --locked markdown-oxide

-- From lua/plugins/lsp/init.lua:59
vim.lsp.enable({
  "harper_ls", -- Grammar/spell checking for markdown, gitcommit, etc.
})

cargo install --locked harper-ls

-- From lua/plugins/formatter.lua:68
markdown = { "markdownlint-cli2", stop_after_first = true }

npm install -g markdownlint-cli2

{
  "default": true,
  "MD013": false,  // Disable line length rule
  "MD033": false,  // Allow inline HTML
  "MD041": false   // Don't require first line to be h1
}

-- From lua/plugins/linting.lua:69
markdown = { "markdownlint-cli2" }

```lua
local x = 42
```

| Column 1 | Column 2 |
|----------|----------|
| Value 1  | Value 2  |

- Bullet point
- Another point
  - Nested point

- [ ] Unchecked task
- [x] Completed task

[Link text](https://example.com)
[Reference link][ref]

[ref]: https://example.com "Title"

import { CustomComponent } from './components'

# Document

<CustomComponent />

<Component
  prop1="value"
  prop2={variable}
  onClick={() => console.log('clicked')}
/>

## Markdown Section

Regular markdown text.

<div className="custom">
  
  ### More Markdown
  
  Inside JSX!
  
</div>

opts = {
  file_types = { "markdown", "mdx" },
  html = { render_modes = true },
  -- Add custom settings:
  headings = { "󰲡 ", "󰲣 ", "󰲥 ", "󰲧 ", "󰲩 ", "󰲫 " },
  code = { enabled = true },
  checkbox = {
    checked = { icon = '✔ ' },
    unchecked = { icon = '✘ ' },
  },
}

{
  "default": true,
  "MD003": { "style": "atx" },  // Heading style
  "MD007": { "indent": 2 },     // List indentation
  "MD013": false,               // Line length
  "MD024": false,               // Duplicate headings
  "MD033": false,               // Inline HTML
  "MD041": false                // First line heading
}