SmartTube Browser 0.4.8 preview

SmartTube Browser 0.4.8 is a manual unpacked developer preview for Brave, with Chrome/Edge as unverified compatibility targets.

One ST entry remains keyboard reachable during native auto-hide; tools preserve focus and keep a side gutter clear in compact players. Native playback stays with YouTube. No new permission, storage schema, dependency or automatic updater.

Download smarttube-browser-extension-0.4.8.zip and SHA256SUMS.txt, verify SHA-256 848d59a3b47d8335ecdfdef073491eee42907e84ae9a1aadc23a140bd8cb5aba, then extract and load the extension folder in brave://extensions (Developer mode → Load unpacked). No build, npm install, store fee or paid service is required.

Updates are manual: back up the old files and record important settings/queue, preserve the existing profile/entry and unpacked root, replace that root's contents, reopen/reload the existing entry, and confirm ID/version/preferences. Uninstalling or changing root/ID can lose or separate local storage. A file backup alone does not back up browser storage.

Six synthetic same-root0.4.7→0.4.8 update/recovery groups passed in silent isolated Brave155.0.8059.85, retaining the same ID, selected full settings and ordered queue without import. Popup/Settings, keyboard/compact geometry, native5%/Normal1× playback, manual precedence, reload/navigation and actual owned process restart passed. Four trusted playing events measured native5/media0.05. A bounded old-file restore and re-upgrade passed. Static/46units/build and all18package members match the byte-identical accepted ZIP. Prior accepted94fixture/eight live groups are identity-bound reused evidence, not new release-run counts.

Read installation/update/recovery and coverage and validation history. Linked source documents record the preparation checkpoint; they do not claim later public downloaded-distribution verification already happened. This body is frozen for mandatory non-author review and coordinator gate before publication.

Sponsor skipping is opt-in. The actual-service audit is dated0.4.7 evidence for unchanged service code, not a fresh0.4.8service run. Personal profiles/accounts/other extensions, Chrome/Edge, screen readers, arbitrary layouts/ads/Shorts/live streams and browser-level fullscreen Escape remain unverified. No continuous/first-audible volume guarantee or Enhancer removal recommendation. MIT original code; SponsorBlock data keeps its separate notices/license. Published0.4.7assets remain unchanged.