Observed third-party host allowlist for a browser task page. Compare actual observed request hosts with a caller allowlist. This is not a guarantee about later interactions or all potential tracking. Actual rendered DOM with SHA256 PNG and redacted per-request evidence. No query/header/body/cookie capture. All facts bounded; incomplete scope yields passed=null, never a false certification. Simple CSS only, public HTTPS, original robots/barrier/SSRF/DNS-pin isolation.

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