feat(nvim): switch from neo-tree to netrw with l/h navigation and Vexplore toggle

- Removed neo-tree plugin and dependencies
- Configured netrw as tree-style explorer
  - `l` opens file/directory
  - `h` closes/goes up directory
- Added Vexplore toggle on <leader>e
- Auto-open Vexplore if starting nvim with a directory argument
- Refactored keymaps to use `opts` table
- Added inline comments for netrw settings
- Minor formatting cleanup in plugin setups

2 files changed, 78 insertions, 61 deletions

diff --git a/config/nvim/init.lua b/config/nvim/init.lua
index 790c8c7..46ee066 100644
--- a/config/nvim/init.lua
+++ b/config/nvim/init.lua
@@ -1,5 +1,7 @@
 require("plugins")
 
+local opts = { noremap = true, silent = true }
+
 vim.g.mapleader = ' '
 vim.opt.background = "dark"
 vim.opt.clipboard = "unnamedplus" -- Use system clipboard
@@ -10,6 +12,14 @@ vim.opt.shortmess:append("I")     -- Disable intro message
 vim.opt.wrap = false
 vim.cmd.colorscheme("duskfox")
 
+-- Tree
+vim.g.netrw_banner       = 0       -- Hide top banner
+vim.g.netrw_liststyle    = 3       -- Tree-style listing
+vim.g.netrw_browse_split = 4       -- Open in previous window
+vim.g.netrw_altv         = 1       -- Put vertical splits to the right
+vim.g.netrw_winsize      = 25      -- Width of netrw window
+vim.g.netrw_keepdir      = 0       -- Don't keep cwd synced with netrw
+
 vim.opt.fillchars = {
     vert = "|",
     fold = " ",
@@ -21,6 +31,45 @@ vim.opt.fillchars = {
     foldclose = ">",
 }
 
+-- Open Vexplore if the first argument is a directory
+if vim.fn.argc() == 1 and vim.fn.isdirectory(vim.fn.argv(0)) == 1 then
+  -- Delete the default empty buffer
+  vim.cmd("enew")       -- create a new empty buffer
+  vim.cmd("bdelete #")  -- delete the previous buffer (the auto Ex buffer)
+  -- Open vertical explorer for the directory
+  vim.cmd("Vexplore " .. vim.fn.fnameescape(vim.fn.argv(0)))
+end
+
+-- Function to toggle vertical netrw explorer
+local function toggle_vexplore()
+  -- Check if a netrw buffer already exists
+  for _, buf in ipairs(vim.api.nvim_list_bufs()) do
+    if vim.api.nvim_buf_is_loaded(buf) then
+      local ft = vim.api.nvim_buf_get_option(buf, "filetype")
+      if ft == "netrw" then
+        -- If found, close the window
+        for _, win in ipairs(vim.api.nvim_list_wins()) do
+          if vim.api.nvim_win_get_buf(win) == buf then
+            vim.api.nvim_win_close(win, true)
+            return
+          end
+        end
+      end
+    end
+  end
+  -- If no netrw buffer found, open vertical explorer
+  vim.cmd("Vexplore")
+end
+
+-- Map 'l' and 'l' to open file/dir in netrw buffers
+vim.api.nvim_create_autocmd("FileType", {
+  pattern = "netrw",
+  callback = function()
+    vim.api.nvim_buf_set_keymap(0, "n", "l", "<CR>", { silent = true })
+    vim.api.nvim_buf_set_keymap(0, "n", "h", "<CR>", { silent = true })
+  end,
+})
+
 -- Remove trailing whitespace on all lines before saving, excluding markdown files
 vim.api.nvim_create_autocmd("BufWritePre", {
   pattern = "*",
@@ -58,13 +107,13 @@ vim.api.nvim_create_autocmd("FileType", {
 vim.fn.setreg('p', "i# %% py\027o##\027O") -- Insert python cell
 
 -- Tabs
-vim.keymap.set('n', '<C-t>', '<cmd>tabnew<CR>'  , { noremap = true, silent = true })
-vim.keymap.set('n', 'J'    , '<cmd>tabn<CR>'    , { noremap = true, silent = true })
-vim.keymap.set('n', 'K'    , '<cmd>tabp<CR>'    , { noremap = true, silent = true })
+vim.keymap.set('n', '<C-t>', '<cmd>tabnew<CR>', opts)
+vim.keymap.set('n', 'J'    , '<cmd>tabn<CR>'  , opts)
+vim.keymap.set('n', 'K'    , '<cmd>tabp<CR>'  , opts)
 
 -- Windows
-vim.keymap.set('n', '<C-Down>' , '<cmd>split<CR>' , { noremap = true, silent = true })
-vim.keymap.set('n', '<C-Right>', '<cmd>vsplit<CR>', { noremap = true, silent = true })
+vim.keymap.set('n', '<C-Down>' , '<cmd>split<CR>' , opts)
+vim.keymap.set('n', '<C-Right>', '<cmd>vsplit<CR>', opts)
 vim.keymap.set('n', '<C-h>'    , '<C-w>h'         , { noremap = true })
 vim.keymap.set('n', '<C-j>'    , '<C-w>j'         , { noremap = true })
 vim.keymap.set('n', '<C-k>'    , '<C-w>k'         , { noremap = true })
@@ -78,10 +127,10 @@ vim.keymap.set('i', '<C-k>'    , '<Up>'   , { noremap = true })
 vim.keymap.set('i', '<C-space>', '<ESC>'  , { noremap = true })
 
 -- Plugins
-vim.keymap.set('n', '<leader>e', '<cmd>Neotree toggle right<CR>', { noremap = true, silent = true })
-vim.keymap.set('n', '<leader>w', '<cmd>MdEval<CR>'              , { noremap = true, silent = true })
-vim.keymap.set('n', '<leader>c', '<cmd>MdEvalClean<CR>'         , { noremap = true, silent = true })
+vim.keymap.set('n', '<leader>w', '<cmd>MdEval<CR>'     , opts)
+vim.keymap.set('n', '<leader>c', '<cmd>MdEvalClean<CR>', opts)
 
 -- Other
-vim.keymap.set('n', '<leader><leader>', '<cmd>w!<CR>' , { noremap = true, silent = true })
-vim.keymap.set('n', '<leader>q'       , '<cmd>wq!<CR>', { noremap = true, silent = true })
+vim.keymap.set('n', '<leader><leader>', '<cmd>w!<CR>' , opts)
+vim.keymap.set('n', '<leader>q'       , '<cmd>wq!<CR>', opts)
+vim.keymap.set("n", "<leader>e", toggle_vexplore      , opts)
diff --git a/config/nvim/lua/plugins.lua b/config/nvim/lua/plugins.lua
index c85cd6e..e2454a1 100644
--- a/config/nvim/lua/plugins.lua
+++ b/config/nvim/lua/plugins.lua
@@ -23,30 +23,26 @@ require("lazy").setup({
 		"numToStr/Comment.nvim",
 		"windwp/nvim-autopairs",
 		"EdenEast/nightfox.nvim",
-		"nvim-neo-tree/neo-tree.nvim",
 		"nvim-orgmode/orgmode",
 		"jubnzv/mdeval.nvim",
-		-- neo-tree-dependencies
-			"nvim-lua/plenary.nvim",
-			"nvim-tree/nvim-web-devicons", -- not strictly required, but recommended
-			"MunifTanjim/nui.nvim"
 	},
+
 })
 
 require("Comment").setup{
-    padding = true,   -- Add a space b/w comment and the line
-    sticky = true,    -- Whether the cursor should stay at its position
-    ignore = nil,     -- Lines to be ignored while (un)comment
-    -- LHS of toggle mappings in NORMAL mode
-    toggler = {
-        line = 'cc',  --Line-comment toggle keymap
-        block = 'cb', -- Block-comment toggle keymap
-    },
-    -- LHS of operator-pending mappings in NORMAL and VISUAL mode
-    opleader = {
-        line = 'cc',  --Line-comment keymap
-        block = 'cb', --Block-comment keymap
-    },
+	padding = true,   -- Add a space b/w comment and the line
+	sticky = true,    -- Whether the cursor should stay at its position
+	ignore = nil,     -- Lines to be ignored while (un)comment
+	-- LHS of toggle mappings in NORMAL mode
+	toggler = {
+		line = 'cc',  --Line-comment toggle keymap
+		block = 'cb', -- Block-comment toggle keymap
+	},
+	-- LHS of operator-pending mappings in NORMAL and VISUAL mode
+	opleader = {
+		line = 'cc',  --Line-comment keymap
+		block = 'cb', --Block-comment keymap
+	},
 }
 
 require("toggleterm").setup{
@@ -62,39 +58,11 @@ require("toggleterm").setup{
 
 }
 
-require("neo-tree").setup({
-	filesystem = {
-		window = {
-			mappings = {
-				["l"] = "open",
-				["h"] = "close_node",
-				["zh"] = "toggle_hidden",
-				["H"] = "close_all_nodes",
-			}
-		}
-	},
-	default_component_configs = {
-		indent = {
-			--Indent Markers
-			with_markers = true,
-			indent_marker = "│",
-			last_indent_marker = "└",
-			indent_size = 2,
-			-- Expanders
-			with_expanders = false, --Not active
-			expander_collapsed = ">",
-			expander_expanded = "",
-			expander_highlight = "NeoTreeExpander",
-
-		},
-	},
-})
-
 require("nvim-autopairs").setup({
-	 disable_filetype = { "TelescopePrompt", "spectre_panel", "neo-tree-popup", "conf"},
-	 disable_in_macro = true,
-	 disable_in_visualblock = false,
-	 disable_in_replace_mode = true,
+	disable_filetype = { "TelescopePrompt", "spectre_panel", "neo-tree-popup", "conf"},
+	disable_in_macro = true,
+	disable_in_visualblock = false,
+	disable_in_replace_mode = true,
 })
 
 require('orgmode').setup({
@@ -103,5 +71,5 @@ require('orgmode').setup({
 })
 
 require 'mdeval'.setup({
-  require_confirmation=false
+	require_confirmation=false
 })