Copies index/frontend's FluksioLoader component and its `.fluksio-loader-line` rule into the app (the shadcn duplication model, so the CSS travels with the component) and swaps every Loader2 pending state over: the router's pending screen, the flow dock's Run and Publish, the dashboard editor's Publish, the overview toolbar's Publish-all and LoadingButton. One loading mark across both shells. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01K1moruzue2kTJd3uVisgNk