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>

gitea-bootstrap/scripts/00_preflight.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SKILL_ROOT="$(dirname "$SCRIPT_DIR")"
+source "$SCRIPT_DIR/_common.sh"
+
+: "${MODE:=docker}"
+: "${ADMIN_USER:=}"
+: "${ADMIN_EMAIL:=}"
+: "${DATA_DIR:=$HOME/gitea}"
+: "${HTTP_PORT:=3000}"
+: "${SSH_PORT:=2222}"
+
+main() {
+  log_info "Starting 00_preflight.sh"
+  [[ -n "$ADMIN_USER" ]] || die "ADMIN_USER is required."
+  [[ -n "$ADMIN_EMAIL" ]] || die "ADMIN_EMAIL is required."
+
+  need curl
+  need jq
+
+  if [[ "$MODE" == "docker" ]]; then
+    need docker
+    need docker-compose || log_warn "docker-compose not found; will use 'docker compose' if available."
+    docker version >/dev/null 2>&1 || die "Docker not working."
+  elif [[ "$MODE" == "native" ]]; then
+    need sudo
+    need systemctl
+  else
+    die "MODE must be 'docker' or 'native' (got: $MODE)"
+  fi
+
+  mkdir -p "$SKILL_ROOT/outputs"
+  mkdir -p "$SKILL_ROOT/outputs/backups"
+  mkdir -p "$DATA_DIR"
+
+  # lightweight port sanity
+  if command -v ss >/dev/null 2>&1; then
+    if ss -ltn | awk '{print $4}' | grep -q ":$HTTP_PORT$"; then
+      log_warn "HTTP_PORT $HTTP_PORT already in use."
+    fi
+    if ss -ltn | awk '{print $4}' | grep -q ":$SSH_PORT$"; then
+      log_warn "SSH_PORT $SSH_PORT already in use."
+    fi
+  fi
+
+  log_info "Preflight OK."
+}
+main "$@"