scripts/discover-unifi: add 'raw <path>' mode for debugging selectors

scripts/discover-unifi.sh

@@ -161,8 +161,16 @@ case "$MODE" in
     echo "# === UniFi devices ===" >&2
     emit_devices
     ;;
+  # Raw JSON dump for a given endpoint. Useful for figuring out what
+  # fields actually exist so the TSV emitters can be updated.
+  raw)
+    shift
+    path="${1:-/ea/hosts}"
+    curl -sS -H "X-API-KEY: ${UNIFI_API_KEY}" -H "Accept: application/json" \
+      "${BASE}${path}" | jq .
+    ;;
   *)
-    echo "error: unknown mode '$MODE' — expected hosts|sites|devices|all" >&2
+    echo "error: unknown mode '$MODE' — expected hosts|sites|devices|all|raw <path>" >&2
     exit 2
     ;;
 esac