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>

disaster-recovery/checks/check_backup_artifacts.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SKILL_ROOT="$(dirname "$SCRIPT_DIR")"
+source "$SKILL_ROOT/scripts/_common.sh"
+
+: "${BACKUP_SKILL_DIR:=}"
+: "${RUN_DIR:=}"
+
+main() {
+  [[ -n "$BACKUP_SKILL_DIR" ]] || die "BACKUP_SKILL_DIR is required."
+  local run_dir; run_dir="$(resolve_run_dir "$BACKUP_SKILL_DIR" "$RUN_DIR")"
+  [[ -f "$run_dir/archive.tar.gz.age" ]] || die "Missing encrypted archive"
+  [[ -f "$run_dir/manifest.json" ]] || die "Missing manifest"
+  [[ -f "$run_dir/ROOT.txt" ]] || die "Missing ROOT.txt"
+  [[ -f "$run_dir/PROOF.json" ]] || die "Missing PROOF.json"
+  log_info "Backup artifacts OK."
+}
+main "$@"