Major search engines must match ua and ip for the same vendor to pass.

Version tag data packs in git to track who changed which vertical pool.

Steel pipe and welding tags suit industrial manufacturing skins.

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

Block replacements support faq lists product cards and timeline sections.

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

Brand and city diy files enable geo and manufacturer name personalization.

Each request can use a different template for layout variation.

Sentence packs should stay neutral to reuse across unrelated verticals.

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