Add a spreadsheet-like UI for structured data (no-code RDBMS)

Note This request is partly a speculative design piece. Take it with a pinch of salt... Problem statement Outline excels as a collaborative documentation platform, leveraging ProseMirror's robust editor framework to deliver rich text formatting, slash-command efficiency, modular content blocks (code snippets, embeds, interactive widgets), and multimedia integration – a significant upgrade over static Markdown. However, Outline remains architecturally focused on unstructured document creation, lacking native support for structured data systems (relational databases, bi-directional linked datasets, nested kanban boards, etc.) that define no-code RDBMS like [NocoDB]( or [Teable]( and next-gen knowledge management platforms such as Notion, Confluence, SiYuan, AppFlowy, ClickUp—which merge document editing with database-driven workspaces. This makes it possible to realise deep KB scenarios, such as: • Structured knowledge repositories • Complex data relationships …