feat(nvim): add vim-markdown-composer plugin

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

dots/.config/nvim/lua/paq-setup.lua

@@ -46,5 +46,6 @@ require("nixCatsUtils.catPacker").setup({
   { "ramilito/kubectl.nvim" },
   { "mikesmithgh/kitty-scrollback.nvim" },
   { "chrisgrieser/nvim-early-retirement" },
+  { "euclio/vim-markdown-composer" },
   { "greggh/claude-code.nvim" },
 })