Human-readable factor strings describing each detected anomaly.
e.g. ['missing_accept', 'debug_scraper_header']
true when one or more headers expected from a real browser
(accept, accept-language, accept-encoding) are absent.
true when the header order looks non-browser-like (e.g. user-agent
arrives after content-type in a typical HTTP-client pattern).
Anomalies detected in the HTTP request header set.