Scriptlet marker
Rule tier: a scriptlet from the primary engine. Rule test-adblock.com##+js(set-constant, eng2306PrimaryScriptlet, 1) in a first_party_protections list. Our arm stages this rule through FilterManifestOverride (Adblock.ReleaseTests CosmeticTierFixturesTests); no shipped list has it. Brave cannot be measured here (adblock-rust rejects a generic ##+js; no shipped scriptlet names test-adblock.com). Source-derived: Brave injects both engines' scriptlets in both modes (ad_block_engine_wrapper.cc:347-353, cosmetic_filters_js_handler.cc:691-709).
Expected in both modes: the marker hidden (the scriptlet ran).
Expectations are Brave's verdicts, stated in pages/cosmetic-fixtures.json (ENG-2306); until Brave is measured they are hypotheses. The status line mirrors the Standard expectation.