Netrw is disabled, as nvim-tree needs to own directory buffers so
`nvim .` opens the tree rather than the two fighting over it. That
removes :Ex, so the Obsidian guide has been updated to point at
<leader>e instead.
No auto-open autocmd: `nvim <path>` opens just the file, and the tree
is there on <leader>e when it is wanted. Placing it on the right also
flips the split direction, so opening a file from the tree puts it to
the left rather than displacing the tree.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
