Leet serves its furnidata as HTML with the JSON embedded in a <pre>
block, and Cloudflare blocks Node's direct fetch. Extract the JSON
payload from the HTML (direct or via the FlareSolverr fallback) before
giving up on a Cloudflare challenge.
Also skip the standalone icon download when a clone source has no
iconBaseUrl configured (Habbo, Hubba, Fresh, Kyzegs, RidgeRP), which
previously produced invalid relative URLs like /xxx_icon.png and a
flood of download errors before falling back to extracting the icon
from the .nitro bundle.
Replace the serialized SELECT MAX + INSERT id-allocation chains for
items_base and catalog_items with a lazy-seeded in-process counter so
concurrent clone workers no longer queue on a global lock per item.
Re-seeds after 60s idle to avoid colliding with externally added rows.
Raise the clone import concurrency default from 6 to the batch cap of 10.