fix: resolve conflicts between modules and improve reliability

- Remove duplicate SSH_AUTH_SOCK configuration in apps.sh (now handled by gcr-ssh-agent)
- Remove duplicate system update in apps.sh (now only in install_all)
- Remove duplicate packages from zsh-config (git, zoxide, fastfetch, yt-dlp)
- Add mg_dotfiles verification warning for Zsh/Hyprland modules
- Make .zshrc backup non-critical to avoid interruption
- Improve service verification with status checks before enabling
- Add clarifying comments about cursor configuration layers

modules/mouse_cursor.sh

@@ -45,6 +45,8 @@ install_mouse_cursor() {
     fi
 
     # --- Paso 3: Configurar variables de entorno para Hyprland ---
+    # Nota: Esto configura el cursor para aplicaciones X11 y Hyprland.
+    # Para aplicaciones GTK/Flatpak, se usa gsettings en el Paso 4.
     if [ -f "$ENVS_FILE" ]; then
         log_info "Configurando variables de entorno en $ENVS_FILE..."
         if ! grep -q "HYPRCURSOR_THEME,${CURSOR_THEME}" "$ENVS_FILE"; then