Fix keymap conflicts and add improvements

- Fix duplicate git conflict keymaps (centralized in gitconflict.lua)
- Fix duplicate Copilot keymaps (centralized in copilot.lua)
- Change insert mode escape from 'jk' to 'jj' to avoid typing conflicts
- Add word counter to statusline (lualine)
- Disable Copilot by default for .tex files
- Remove textwidth limits for visual wrapping based on window width
- Add comprehensive improvements documentation (IMPROVEMENTS.md)
- Update README with links to documentation

README.md

@@ -1,3 +1,12 @@
+# Neovim Configuration
+
+> **📋 Documentation:**
+> - **[IMPROVEMENTS.md](./IMPROVEMENTS.md)** - Comprehensive analysis of configuration improvements and recommendations
+> - **[keyboard_mappings.md](./keyboard_mappings.md)** - Complete keymap reference
+> - **[NATIVE_AUTO_WRAPPER_GUIDE.md](./NATIVE_AUTO_WRAPPER_GUIDE.md)** - Text wrapping configuration guide
+
+---
+
 # Vim and Tmux Keymaps
 
 ## Tmux Keymaps