feat: add new configuration modules

- Add preconfig.lua for early initialization
- Add themes.lua for theme management

lua/config/preconfig.lua

@@ -0,0 +1,27 @@
+-- Disable netrw before anything else loads
+vim.g.loaded_netrw = 1
+vim.g.loaded_netrwPlugin = 1
+vim.g.loaded_netrwSettings = 1
+vim.g.loaded_netrwFileHandlers = 1
+
+-- Apply transparent background after any colorscheme change
+vim.api.nvim_create_autocmd('ColorScheme', {
+  pattern = '*',
+  callback = function()
+    vim.api.nvim_set_hl(0, 'Normal', { bg = 'none' })
+    vim.api.nvim_set_hl(0, 'NormalNC', { bg = 'none' })
+  end,
+})
+
+local themes = require('custom.themes')
+-- Set correct colorscheme before plugins load (prevents flash)
+local is_dark = vim.trim(vim.fn.system('defaults read -g AppleInterfaceStyle 2>/dev/null')) == 'Dark'
+vim.o.background = is_dark and 'dark' or 'light'
+
+local ok, _ = pcall(function()
+  vim.cmd.colorscheme(is_dark and themes.dark or themes.light)
+end)
+
+if not ok then
+  vim.cmd.colorscheme('habamax')
+end

lua/custom/themes.lua

@@ -0,0 +1,4 @@
+return {
+  dark = 'monokai_soda',
+  light = 'solarized',
+}