feat: add collectors and rules

20-collectors/collect_ledger_verify.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+OUT_DIR="${1:?usage: collect_ledger_verify.sh <out_dir>}"
+mkdir -p "$OUT_DIR"
+
+if command -v ledger >/dev/null 2>&1; then
+  ledger verify --format json > "$OUT_DIR/ledger_verify.json"
+elif command -v ledger-cli >/dev/null 2>&1; then
+  ledger-cli verify --format json > "$OUT_DIR/ledger_verify.json"
+else
+  cat > "$OUT_DIR/ledger_verify.json" <<'JSON'
+{"collected": false, "reason": "ledger CLI not found"}
+JSON
+fi