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>

container-registry/references/registry_notes.md

@@ -0,0 +1,17 @@
+# OCI Registry Notes
+
+## Why Self-Host
+- Full sovereignty over artifacts
+- Pair with Gitea for source + images
+
+## TLS
+Terminate TLS via:
+- Reverse proxy (nginx/Traefik)
+- Cloudflare Tunnel
+
+## Signing (Next)
+Integrate:
+- cosign (Sigstore)
+- Notation v2
+
+These will be added as future skills or extensions.