Video Stabilizer 2.9.6 — release

Sustained playback trouble adds an amber border and ! to the player icon,
one four-second notice per incident, and localized advice in the panel.
Warnings use successful output, source cadence, dropped frames, buffering
and the full processing job time. Recovered callback misses alone do not
trigger a warning. Evidence may identify processing pressure, source drops
or buffering; uncertain causes remain explicitly undetermined.

Five effective seconds of trouble trigger the reminder; ten healthy seconds
clear it. Startup, seeking, pauses, hidden pages and ads are excluded.
The Q and Performance buttons only reveal the relevant existing controls.
There is no automatic adjustment, automatic disable or continuous flashing.
All 12 languages include localized numbers, right-to-left layout, narrow
player support and polite screen-reader announcements.

Current settings, last Apply, My default, defaults and the native core remain
unchanged. No additional permissions or relaxed CSP is introduced.

Update
  Replace every file in the existing extension folder, reload it in Chrome
  and refresh existing YouTube pages. Retain the same installed folder to
  preserve the extension identity and saved settings.

Distribution files
  Video-Stabilizer-2.9.6.zip
  Video-Stabilizer-2.9.6-source.zip
  Video-Stabilizer-2.9.6-publication.zip
  Website and SHA256SUMS: work/public-site/ and work/github-web-2.9.6/
  Chrome Web Store 2.9.3 is available; 2.9.6 is prepared for separate update review.

Validation
  120 program tests; 178 warning/localization checks; 12 narrow-viewport
  language checks; 61 settings checks; 18 native-Chrome pixel, pairing,
  playback and recovery checks passed. Foreground output was 30 fps with
  215 consecutive pairs and no source drops. The earlier embedded-browser
  pixel-observer shortage is retained in the validation report; thresholds
  were not relaxed. See validation/performance-alert-browser-2.9.6.json.
  Desktop Chrome / YouTube is the target; Edge remains unvalidated.

All features remain free with optional one-time support and no subscription.
GPL-2.0-or-later; third-party notices are included.
