Offline source sync
The public site never scrapes FansSheets during a visitor request. A low-concurrency script reads current category pages, opens a limited set of detail pages, normalises facts, validates the dataset and writes static JSON for Next.js.
Facts we keep
A product needs a real detail URL, raw title, raw price value and real image. Category, QC evidence and agent links are saved only when observed. Failed syncs retain the previous known-good dataset.
Deterministic allocation
This domain receives a stable subset of the shared source catalogue. Category shortfalls are filled by recorded deterministic fallback rules; products are never invented or duplicated to meet a design count.
Link states
Checks distinguish a direct success, a redirect, 404, 410, timeout, blocked response and an otherwise unverifiable result. A blocked response is not silently promoted to verified.
Meaning of a working link
Reachability proves only that the URL responded at the time of the check. It does not prove platform safety, product quality, authenticity, delivery performance or the cheapest price.