Build My First AI Research Assistant

Help me build my first AI research workspace as a beginner using Next.js, TypeScript and Tailwind CSS.

Include research projects, document records, notes, tags, search, summaries, key concepts, research questions, AI conversations and references. Never fabricate citations or claim to have read a source that was not provided. Clearly distinguish user content, AI-generated content and external sources. Preserve source metadata and let users inspect the supporting text for every generated claim where possible. Add secure uploads, authorization, privacy, helpful empty/error/loading states, responsive accessibility, SEO and deployment guidance. Use Next.js with TypeScript and Tailwind CSS. Build a polished, accessible, responsive application with clear beginner explanations, reusable components, semantic HTML, loading/error/empty states, form validation, SEO metadata, dark/light mode and deployment instructions. Explain important decisions as you go.