Occasional detection in sandboxed environment

Very occasional detection at browser start and first video watched – this is purely to give information to the extension author so please don't join this thread unless your sandboxed conditions are the same:

• Mac Chrome Version 126.0.6478.183 (Official Build) (x86_64) – I use Brave as my daily driver, so Chrome is used for Youtube only
• Latest version of Fadblock with no other extensions loaded in Chrome
• A dedicated Google account for Youtube only.

As this is only happening very occasionally (perhaps once a week at most), signing out of the account, clearing all Chrome data and signing back in solves the issue with minimum fuss.

The issue describes occasional detection in a sandboxed Chrome environment. Start by examining the extension's detection avoidance logic, likely in the content scripts or background service worker. Reproduce the sandboxed setup: a clean Chrome profile with only Fadblock, a dedicated YouTube account. Monitor network requests and extension logs to identify what triggers detection. 'Done' means understanding the detection pattern and proposing a fix.

索引モデルが issue の本文から書いたものです。