feat(audit): address batch 2 of missing scripts

- Implement nomarchy-version, nomarchy-debug, nomarchy-reinstall, nomarchy-rollback, nomarchy-upload-log
- Implement nomarchy-refresh-hyprland and nomarchy-refresh-waybar
- Update docs/SCRIPTS.md with 'kept' status for new scripts

features/scripts/utils/nomarchy-rollback

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+# Nomarchy Rollback Script
+# Reverts the system to a previous working generation.
+
+set -e
+
+if command -v snapper &>/dev/null; then
+    echo "BTRFS Snapper detected. Listing snapshots..."
+    sudo snapper list
+    echo ""
+    echo "To rollback to a specific snapshot, run: sudo snapper rollback <number>"
+    echo "Or to rollback the current NixOS generation only:"
+fi
+
+echo "Rolling back NixOS generation..."
+sudo nixos-rebuild rollback
+
+echo "Rollback complete. Please reboot if you performed a BTRFS rollback."