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/plugins/formatting.lua

@@ -32,7 +32,22 @@ return {
         dbml = { "dbml" }, -- DBML formatting
         sql = { "sqlfluff" }, -- SQL formatting
       },
-      format_on_save = false, -- Set to true if you want auto-formatting on save
+      format_on_save = function(bufnr)
+        -- Disable autoformat for certain filetypes
+        local ignore_filetypes = { "sql", "markdown" }
+        if vim.tbl_contains(ignore_filetypes, vim.bo[bufnr].filetype) then
+          return
+        end
+        -- Disable for files in certain paths
+        local bufname = vim.api.nvim_buf_get_name(bufnr)
+        if bufname:match("/node_modules/") then
+          return
+        end
+        return {
+          timeout_ms = 2000,
+          lsp_fallback = true,
+        }
+      end,
     })
 
     vim.keymap.set({ "n", "v" }, "<leader>mm", function()
@@ -41,6 +56,16 @@ return {
         async = false,
         timeout_ms = 2000,
       })
-    end, { desc = "Format file or range (in visual mode)" })
+    end, { desc = "Format: File or range (in visual mode)" })
+
+    -- Toggle auto-format on save
+    vim.api.nvim_create_user_command("FormatToggle", function()
+      vim.g.disable_autoformat = not vim.g.disable_autoformat
+      if vim.g.disable_autoformat then
+        vim.notify("Auto-format on save disabled", vim.log.levels.INFO)
+      else
+        vim.notify("Auto-format on save enabled", vim.log.levels.INFO)
+      end
+    end, { desc = "Toggle auto-format on save" })
   end,
 }

lua/cargdev/plugins/lualine.lua

@@ -49,7 +49,7 @@ return {
       },
     }
 
-    -- Custom word/character counter function
+    -- Custom word counter function
     local function word_count()
       -- Skip for very large files to avoid performance issues
       local line_count = vim.api.nvim_buf_line_count(0)
@@ -58,7 +58,6 @@ return {
       end
       
       local words = 0
-      local chars = 0
       
       -- Get all lines at once for better performance
       local all_lines = vim.api.nvim_buf_get_lines(0, 0, -1, false)
@@ -69,13 +68,11 @@ return {
           for _ in line:gmatch("%S+") do
             words = words + 1
           end
-          -- Count characters (excluding newline)
-          chars = chars + #line
         end
       end
       
-      -- Format: show words and characters
-      return string.format("%d words, %d chars", words, chars)
+      -- Format: show only word count
+      return string.format("%d words", words)
     end
 
     -- configure lualine with modified theme

lua/cargdev/plugins/which-key.lua

@@ -5,9 +5,38 @@ return {
     vim.o.timeout = true
     vim.o.timeoutlen = 200 -- Reduced from 500 for faster response
   end,
-  opts = {
-    -- your configuration comes here
-    -- or leave it empty to use the default settings
-    -- refer to the configuration section below
-  },
+  config = function()
+    local wk = require("which-key")
+
+    wk.setup({
+      plugins = {
+        marks = true,
+        registers = true,
+        spelling = { enabled = true, suggestions = 20 },
+      },
+      win = {
+        border = "rounded",
+        padding = { 2, 2, 2, 2 },
+      },
+    })
+
+    -- Register group names for better organization
+    wk.add({
+      { "<leader>b", group = "Buffer" },
+      { "<leader>c", group = "Code/Copilot" },
+      { "<leader>d", group = "Debug/DAP" },
+      { "<leader>e", group = "Explorer" },
+      { "<leader>f", group = "Find/Files" },
+      { "<leader>g", group = "Git" },
+      { "<leader>l", group = "LSP/LeetCode" },
+      { "<leader>m", group = "Format" },
+      { "<leader>n", group = "Notifications" },
+      { "<leader>p", group = "Project" },
+      { "<leader>q", group = "Quickfix" },
+      { "<leader>s", group = "Session/Split/Substitute" },
+      { "<leader>t", group = "Tab/Terminal/Text" },
+      { "<leader>x", group = "Trouble/Diagnostics" },
+      { "<leader>z", group = "Copilot Chat" },
+    })
+  end,
 }