Add todo-comments plugin for annotation highlighting

[rikuson]

Summary

• Adds folke/todo-comments.nvim plugin to Neovim configuration
• Highlights annotation comments like TODO, FIXME, HACK, WARN, NOTE, etc.
• Loads lazily on VeryLazy event

Test plan

• Run make cui to deploy the configuration
• Open a file with TODO/FIXME comments and verify highlighting

🤖 Generated with Claude Code

[claude]

PR Review: Add todo-comments plugin

✅ Positive Feedback

Code Quality

• The plugin configuration follows the repository's Lazy.nvim patterns correctly
• Clean, minimal configuration using the opts = {} pattern for default settings
• Proper dependency declaration (plenary.nvim)
• Consistent with other plugin files from the same author (folke/flash.nvim, folke/which-key.nvim)

Architecture Alignment

• Correctly placed in roles/cui/templates/.config/nvim/lua/plugins/ following the modular plugin structure
• Uses event = "VeryLazy" for lazy loading, consistent with other UI enhancement plugins
• Will be automatically loaded by Lazy.nvim plugin manager

Security & Performance

• No security concerns - this is a well-maintained plugin from a trusted author
• Lazy loading ensures no performance impact on startup
• No network requests or external dependencies beyond plenary

💡 Suggestions for Enhancement

Consider Adding Telescope Integration
The todo-comments.nvim plugin has excellent Telescope integration that other plugins in your config (like flash.nvim:1-53) actively use. Consider adding keybindings:

return {
  "folke/todo-comments.nvim",
  dependencies = { "nvim-lua/plenary.nvim" },
  event = "VeryLazy",
  opts = {},
  keys = {
    { "<leader>st", "<cmd>TodoTelescope<cr>", desc = "TODO/FIXME" },
    { "]t", function() require("todo-comments").jump_next() end, desc = "Next TODO" },
    { "[t", function() require("todo-comments").jump_prev() end, desc = "Previous TODO" },
  },
}

This would:

• Add <leader>st (Search TODO) to search all TODOs via Telescope, consistent with your <leader>s* search patterns (telescope.lua:9)
• Enable navigation between TODO comments with ]t and [t
• Integrate nicely with your which-key setup (which-key.lua:17)

Alternative: Keep it minimal
If you prefer the minimal approach (which is valid!), the current configuration is perfect. The plugin will work out of the box with highlighting.

📋 Test Plan Enhancement

Your test plan is good. Consider also verifying:

• Telescope integration works (if keybindings added): :TodoTelescope
• Default keywords are highlighted: TODO, HACK, WARN, PERF, NOTE, FIX

Summary

Approval Status: ✅ Approved

This is a solid addition with no issues. The code is correct, follows all repository conventions, and adds useful functionality. The enhancement suggestions are optional - the PR is perfectly acceptable as-is for a minimal working configuration.