docs(v3.5.0): update README for integrated mg_dotfiles and security improvements

- Integrated mg_dotfiles as regular directory (not submodule)
- Added .zshrc.local.example template for local configs without secrets
- Added mg_dotfiles/zsh/.zshrc.local to .gitignore to protect API keys
- Updated README to reflect mg_dotfiles integration and new structure
- Added nvim configuration directory with LazyVim setup

mg_dotfiles/install.sh

@@ -0,0 +1,77 @@
+#!/bin/bash
+set -e
+
+DOTFILES_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+BACKUP_DIR="$HOME/.dotfiles_backup_$(date +%Y%m%d_%H%M%S)"
+
+echo "🚀 Instalando dotfiles desde $DOTFILES_DIR"
+echo "💾 Backups guardados en $BACKUP_DIR"
+mkdir -p "$BACKUP_DIR"
+
+backup_and_link() {
+  local src="$1"
+  local dest="$2"
+  
+  if [ -e "$dest" ] && [ ! -L "$dest" ]; then
+    echo "📦 Backing up $dest"
+    mv "$dest" "$BACKUP_DIR/"
+  fi
+  
+  echo "🔗 Linking $dest -> $src"
+  ln -sf "$src" "$dest"
+}
+
+echo ""
+echo "📝 Bash"
+backup_and_link "$DOTFILES_DIR/bash/.bashrc" "$HOME/.bashrc"
+
+echo ""
+echo "🐚 Zsh"
+backup_and_link "$DOTFILES_DIR/zsh/.zshrc" "$HOME/.zshrc"
+backup_and_link "$DOTFILES_DIR/zsh/.zshrc.help" "$HOME/.zshrc.help"
+
+mkdir -p "$HOME/.zsh_functions"
+for func_file in "$DOTFILES_DIR/zsh/.zsh_functions"/*.zsh; do
+  if [ -f "$func_file" ]; then
+    backup_and_link "$func_file" "$HOME/.zsh_functions/$(basename "$func_file")"
+  fi
+done
+
+# Crear .zshrc.local si no existe
+if [ ! -f "$HOME/.zshrc.local" ]; then
+  echo "📄 Creando .zshrc.local (recuerda agregar tus API keys)"
+  cp "$DOTFILES_DIR/zsh/.zshrc.local.example" "$HOME/.zshrc.local" 2>/dev/null || cat > "$HOME/.zshrc.local" << 'EOF'
+# .zshrc.local - Configuración local y variables sensibles
+# Este archivo es cargado por .zshrc
+
+# --- API Keys ----------------------------------------------------------------
+# Agrega tus API keys aquí:
+
+# OpenAI
+# export OPENAI_API_KEY="sk-..."
+
+# Google Gemini
+# export GOOGLE_API_KEY="..."
+
+# Anthropic Claude
+# export ANTHROPIC_API_KEY="sk-..."
+EOF
+fi
+
+echo ""
+echo "🖥️  Omarchy / Hyprland / Waybar"
+backup_and_link "$DOTFILES_DIR/omarchy/omarchy" "$HOME/.config/omarchy"
+backup_and_link "$DOTFILES_DIR/omarchy/hypr" "$HOME/.config/hypr"
+backup_and_link "$DOTFILES_DIR/omarchy/waybar" "$HOME/.config/waybar"
+backup_and_link "$DOTFILES_DIR/omarchy/walker" "$HOME/.config/walker"
+
+echo ""
+echo "📟 Terminal (Alacritty/Kitty/Mako)"
+[ -d "$DOTFILES_DIR/omarchy/alacritty" ] && backup_and_link "$DOTFILES_DIR/omarchy/alacritty" "$HOME/.config/alacritty"
+[ -d "$DOTFILES_DIR/omarchy/kitty" ] && backup_and_link "$DOTFILES_DIR/omarchy/kitty" "$HOME/.config/kitty"
+[ -d "$DOTFILES_DIR/omarchy/mako" ] && backup_and_link "$DOTFILES_DIR/omarchy/mako" "$HOME/.config/mako"
+
+echo ""
+echo "✅ Instalación completa!"
+echo "📌 Recarga tu shell: source ~/.zshrc o reinicia tu terminal"
+echo "⚠️  No olvides agregar tus API keys en ~/.zshrc.local"