Initial commit: VaultMesh Skills collection

Collection of operational skills for VaultMesh infrastructure including:
- backup-sovereign: Backup and recovery operations
- btc-anchor: Bitcoin anchoring
- cloudflare-tunnel-manager: Cloudflare tunnel management
- container-registry: Container registry operations
- disaster-recovery: Disaster recovery procedures
- dns-sovereign: DNS management
- eth-anchor: Ethereum anchoring
- gitea-bootstrap: Gitea setup and configuration
- hetzner-bootstrap: Hetzner server provisioning
- merkle-forest: Merkle tree operations
- node-hardening: Node security hardening
- operator-bootstrap: Operator initialization
- proof-verifier: Cryptographic proof verification
- rfc3161-anchor: RFC3161 timestamping
- secrets-vault: Secrets management

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

merkle-forest/scripts/rollback/undo_last_run.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SKILL_ROOT="$(dirname "$(dirname "$SCRIPT_DIR")")"
+source "$SKILL_ROOT/scripts/_common.sh"
+
+: "${OUTPUT_DIR:=$SKILL_ROOT/outputs}"
+
+main() {
+  confirm_gate
+  if [[ ! -f "$OUTPUT_DIR/last_run_dir.txt" ]]; then log_warn "No last run."; exit 0; fi
+  run_dir="$(cat "$OUTPUT_DIR/last_run_dir.txt")"
+  [[ -d "$run_dir" ]] && rm -rf "$run_dir"
+  rm -f "$OUTPUT_DIR/last_run_dir.txt" || true
+  log_info "Rollback complete."
+}
+main "$@"