Collapsed the Even plugin architecture into a single unified plugin by merging board card routes and replacing the transport stub with a real webhook implementation, removing the separate cards plugin from the workspace. The new unified plugin (`fusion-plugin-even-realities-glasses`) now exports con
Fusion-Task-Id: FN-3970
Completes Step 6 of FN-3746 by adding `focus-visible` states to ProjectCard and ProjectOverview CSS components, and documenting the Even Realities plugin API coverage in the project docs.
Fusion-Task-Id: FN-3746