Local tests without matching ip will not pass trusted spider even with ua.

Write mode all caches every render including tests use carefully in production.

Hit cache responses skip render entirely for lowest latency paths.

Zh en map longest match replacement handles multi character industry terms.

Ensure cache directory permissions allow web user read write on linux hosts.

Engine detection limits ua classification to four major search vendors.

Error reporting is suppressed at entry for production friendly output charset.

Interval length random tags allow variable slug sizes within one pattern.

Tmp plus rename cache writes reduce risk of partial files under concurrency.

All text blocks are loaded from local files for quick replacement.