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feat: include autofill_suppress.js in init bundle + add autofill_suppress_script() accessor

feat: include vault_detector.js in init script bundle for password autofill/save-prompt

fix: expose hover overlay script for reliable reinjection

Disable native context menu in child WebViews via initialization script

Fix YouTube ad blocking: inject scriptlets via initialization_script BEFORE page JS runs

Fix Shield popover airspace and add Phase 3 library board core

Phase 2 full adblock + privacy implementation