v2.6.9

- Exclude Camoufox's bundled uBlock Origin from browser launch. Camoufox
  downloads its own uBlock Origin the first time it starts and leaves an empty
  addon cache directory behind when that download fails or is interrupted, then
  never re-validates it. Every later launch aborts with `InvalidAddonPath:
  manifest.json is missing` and the container crash-loops. The image already
  installs uBlock Origin through the extension policy, so the bundled copy is
  redundant and is now excluded at launch, which removes the crash.