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

fix(auth): add Vercel API proxy rewrite to HF backend, dynamic API_BASE fallback, and bcrypt 72-byte safeguard

Add DocWeave authentication integration, dynamic workspace selection, search, Dockerfile, and HF Spaces config

feat(auth): add self-contained in-app signup & signin with automated CLI API key sync

feat: layered GitHub-grade UI, dedicated DocWeave auth page, and automated CLI API key sync

feat: complete authentication system with dw login/logout/whoami and Web Studio auth modal

feat: initial commit for DiffWeave platform