Refactor config: fix conflicts, add features, update docs

- Fix keymap conflicts: session (<leader>sS/sR), substitute (<leader>sl)
- Remove duplicate keymaps (window, resize) and options (synmaxcol, foldmethod)
- Add which-key group names for better keymap organization
- Add auto-format on save with smart filtering (conform.nvim)
- Add diagnostic float on hover (CursorHold)
- Add safe buffer close with unsaved changes confirmation
- Add quickfix/location list navigation keymaps
- Add startup config validation (nvim version, executables)
- Enable plugin update notifications in lazy.nvim
- Clean up: remove temporary files (kkk, cleanup script)
- Clean up: remove commented code and fix double function loading
- Update README.md with comprehensive documentation
- Add CHANGELOG.md tracking all changes

lua/cargdev/lazy.lua

@@ -14,7 +14,8 @@ vim.opt.rtp:prepend(lazypath)
 require("lazy").setup({ { import = "cargdev.plugins" }, { import = "cargdev.plugins.lsp" } }, {
   checker = {
     enabled = true,
-    notify = false,
+    notify = true, -- Enable plugin update notifications
+    frequency = 86400, -- Check once per day (in seconds)
   },
   change_detection = {
     notify = false,