Problem:
`:edit <dir>` and `nvim <dir>` currently rely on netrw to show local directory
contents.
Solution:
- Provide `filetype=directory`.
- Introduce dir.lua, a small plugin that provides directory listing, opening
items, parent navigation, and refresh.
- `netrw` remains available for `:Explore`, remote paths, archives, and file
operations. To continue
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
