feat: complete Truth Register overhaul with RAG playground, Git blame drawer, revision loop, AI hub, de-jargonified lineage graph, and 6 clinical/enterprise starter templates

fix(workspaces): enable universal workspace deletion, fix user workspace isolation, and pass explicit IDs on delete-all

fix(studio): resolve temporal dead zone ReferenceError in WorkspaceHub and wrap App in ErrorBoundary

fix(studio): fix tab navigation lock and add workspace delete with select-all and batch delete options

fix(workspaces): fix personal ownership, filter deleted duplicates, and enforce unique workspace names

feat(studio): make quickstart commands generic, individually copyable, bind by workspace name, and improve copy

feat: turn every entity and page into separately openable deep links with browser history and add light/dark mode settings toggle

feat: polish workspace hub with working profile/settings/learn-more, remove distracting animations, and add 1-click visible API key copy

feat(ui): add Hugging Face style Workspace Hub and GitHub style empty state quickstart