perf: further startup optimizations - defer indent, luasnip, notify, oil, atac, auto-dark-mode

lua/custom/plugins/indent.lua

@@ -7,6 +7,7 @@ return {
   -- Add indentation guides even on blank lines
   'lukas-reineke/indent-blankline.nvim',
   main = 'ibl',
+  event = 'VeryLazy',
   opts = {
     indent = {
       highlight = highlight,

lua/custom/plugins/notify.lua

@@ -1,5 +1,6 @@
 return {
   'rcarriga/nvim-notify',
+  event = 'VeryLazy',
   opts = {
     timeout = 5000,
     stages = 'static',

lua/custom/plugins/oil.lua

@@ -1,8 +1,11 @@
 return {
   'stevearc/oil.nvim',
-  dependencies = {
-    'nvim-tree/nvim-web-devicons', -- optional, for file icons
+  lazy = true,
+  keys = {
+    { '<leader>e', '<CMD>Oil<CR>', desc = 'Open parent directory' },
+    { '<leader>E', function() require('oil').toggle_float() end, desc = 'Toggle oil floating window' },
   },
+  dependencies = { 'nvim-tree/nvim-web-devicons' },
   config = function()
     local oil = require('oil')
 
@@ -37,14 +40,7 @@ return {
     vim.api.nvim_set_hl(0, 'OilProgress', { fg = '#66D9EF' })
     vim.api.nvim_set_hl(0, 'OilSymlink', { fg = '#F92672' })
 
-    -- Oil keymaps
-    vim.keymap.set('n', '<leader>e', '<CMD>Oil<CR>', { noremap = true, silent = true, desc = 'Open parent directory' })
-    vim.keymap.set('n', '<leader>E', function()
-      oil.toggle_float()
-    end, { noremap = true, silent = true, desc = 'Toggle oil floating window' })
-
-    -- Add selected file in oil.nvim to Harpoon
-    -- same keymapping as if in a buffer
+    -- Add selected file in oil.nvim to Harpoon (only when in oil buffer)
     vim.keymap.set('n', '<leader>a', function()
       local ok_harpoon, harpoon = pcall(require, 'harpoon')
       if not ok_harpoon then

lua/custom/plugins/snippets.lua

@@ -1,11 +1,10 @@
 return {
   {
     'L3MON4D3/LuaSnip',
-    version = 'v2.*', -- Follows the latest major release version 2
-    build = 'make install_jsregexp', -- Optional: install JavaScript-based regular expressions
-
+    version = 'v2.*',
+    build = 'make install_jsregexp',
+    event = 'InsertEnter',
     dependencies = { 'rafamadriz/friendly-snippets' },
-
     config = function()
       local luasnip = require('luasnip')