feat: add Nerd Font icons to netrw using mini.icons

[devin-ai-integration]

Summary

Add a FileType netrw autocmd that prepends inline virtual text icons to each file/directory entry using mini.icons. Placed right after the existing mini.icons setup in init.lua.

How it works:

• On FileType netrw, parses each buffer line to extract the filename
• Strips tree view characters (│├└─) for tree listing support
• Strips */@ suffixes (executable/symlink markers)
• Calls mini_icons.get('directory', ...) or mini_icons.get('file', ...) to get the icon + highlight group
• Renders icons as inline virtual text via nvim_buf_set_extmark with virt_text_pos = "inline"
• Refreshes on TextChanged so icons update when navigating directories

Supports: thin listing (default), tree listing, and long listing styles.

Note: Currently snacks.explorer has replace_netrw = true, so netrw won't open by default. Set replace_netrw = false or remove it to use netrw with icons.

Review & Testing Checklist for Human

• Open netrw (:Explore after setting replace_netrw = false in snacks config) and verify icons appear next to files/directories
• Verify icons have correct highlight colors from mini.icons
• Test navigating into subdirectories — icons should refresh
• Confirm no errors when Nerd Font is not installed (icons will show as boxes but shouldn't error)

Notes

• Uses pcall(require, 'mini.icons') so it degrades gracefully if mini.icons isn't loaded
• Banner lines (starting with ") are skipped
• The autocmd is inside the if not vim.g.vscode then block so it only runs in terminal Neovim

Link to Devin session: https://app.devin.ai/sessions/82bfd51cdde34530a147c748e72528bf
Requested by: @YeferYV

[devin-ai-integration]

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