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>

backup-sovereign/scripts/00_preflight.sh

@@ -0,0 +1,114 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# === METADATA ===
+SCRIPT_NAME="$(basename "$0")"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SKILL_ROOT="$(dirname "$SCRIPT_DIR")"
+
+# === CONFIGURATION ===
+: "${OUTPUT_DIR:=$SKILL_ROOT/outputs}"
+: "${BACKUP_SOURCES:=}"
+: "${BACKUP_EXCLUDES:=.git,node_modules,target,dist,outputs}"
+
+# === FUNCTIONS ===
+log_info()  { echo "[INFO]  $(date -Iseconds) $*"; }
+log_warn()  { echo "[WARN]  $(date -Iseconds) $*" >&2; }
+log_error() { echo "[ERROR] $(date -Iseconds) $*" >&2; }
+die()       { log_error "$@"; exit 1; }
+
+check_tool() {
+    local tool="$1"
+    if command -v "$tool" &>/dev/null; then
+        log_info "Found: $tool ($(command -v "$tool"))"
+        return 0
+    else
+        log_warn "Missing: $tool"
+        return 1
+    fi
+}
+
+check_b3sum() {
+    if command -v b3sum &>/dev/null; then
+        log_info "Found: b3sum ($(command -v b3sum))"
+        return 0
+    elif command -v blake3 &>/dev/null; then
+        log_info "Found: blake3 ($(command -v blake3))"
+        return 0
+    else
+        log_warn "Missing: b3sum or blake3"
+        return 1
+    fi
+}
+
+main() {
+    log_info "Starting $SCRIPT_NAME..."
+    mkdir -p "$OUTPUT_DIR"
+
+    local missing=0
+
+    log_info "=== Required Tools ==="
+    check_tool tar || ((missing++))
+    check_tool gzip || ((missing++))
+    check_tool age || ((missing++))
+    check_b3sum || ((missing++))
+    check_tool stat || ((missing++))
+    check_tool find || ((missing++))
+
+    log_info "=== Backup Sources ==="
+    if [[ -z "$BACKUP_SOURCES" ]]; then
+        log_warn "BACKUP_SOURCES not set (required for backup)"
+    else
+        IFS=',' read -r -a sources <<< "$BACKUP_SOURCES"
+        for src in "${sources[@]}"; do
+            # Expand ~ if present
+            src="${src/#\~/$HOME}"
+            if [[ -e "$src" ]]; then
+                log_info "Source exists: $src"
+            else
+                log_warn "Source missing: $src"
+            fi
+        done
+    fi
+
+    log_info "=== Encryption Files ==="
+    if [[ -n "${AGE_RECIPIENT_FILE:-}" ]]; then
+        if [[ -f "$AGE_RECIPIENT_FILE" ]]; then
+            log_info "AGE_RECIPIENT_FILE exists: $AGE_RECIPIENT_FILE"
+        else
+            log_warn "AGE_RECIPIENT_FILE missing: $AGE_RECIPIENT_FILE"
+        fi
+    else
+        log_warn "AGE_RECIPIENT_FILE not set (required for encryption)"
+    fi
+
+    if [[ -n "${AGE_IDENTITY_FILE:-}" ]]; then
+        if [[ -f "$AGE_IDENTITY_FILE" ]]; then
+            log_info "AGE_IDENTITY_FILE exists: $AGE_IDENTITY_FILE"
+        else
+            log_warn "AGE_IDENTITY_FILE missing: $AGE_IDENTITY_FILE"
+        fi
+    else
+        log_warn "AGE_IDENTITY_FILE not set (required for restore drill)"
+    fi
+
+    log_info "=== Disk Space ==="
+    local avail
+    avail=$(df -P "$OUTPUT_DIR" | awk 'NR==2 {print $4}')
+    log_info "Available space in $OUTPUT_DIR: $((avail / 1024)) MB"
+
+    log_info "=== Parameters ==="
+    log_info "NODE_NAME=${NODE_NAME:-node-a}"
+    log_info "BACKUP_LABEL=${BACKUP_LABEL:-manual}"
+    log_info "BACKUP_EXCLUDES=$BACKUP_EXCLUDES"
+    log_info "DRY_RUN=${DRY_RUN:-1} (apply scripts require DRY_RUN=0)"
+
+    if [[ $missing -gt 0 ]]; then
+        die "Missing $missing required tools. Install them before proceeding."
+    fi
+
+    log_info "Preflight OK."
+    log_info "Completed $SCRIPT_NAME"
+}
+
+[[ "${BASH_SOURCE[0]}" == "$0" ]] && main "$@"