DocuMind is a full-stack SaaS platform for managing documents and knowledge bases across multiple workspaces. Users create, organize, and collaborate on content with a rich TipTap-based editor, role-based permissions, and team invites. An AI assistant powered by RAG answers questions directly from document content, using embeddings and pgvector for semantic search and retrieval. Built with Next.js, TypeScript, and NestJS on the backend, PostgreSQL + Prisma for data, and Docker + GitHub Actions for CI/CD. Covered by automated backend and frontend tests.