DSH-1 ended with a negative result: the Frame's system WebEngine can't be loaded, and bundling our own failed (no sandbox, ICU resources, Vulkan abort, empty page). Reverts the tab (60deb43), the container packages (0676998) and the bundler's WebEngine support (b823ff3,e2cfa8e), and updates the docs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>