Fixes #188 ## Goals - [x] Paragraphs - [x] `@mentions` with callback for hooking into type-ahead search menu - [x] `#hashtags` Non-goals: - Featureful rich text - Headings, blockquotes, lists, etc - Markdown ## Use-cases - AI box - Title sidebar box - Notes sidebar box ## Prior art - https://github.com/joelewis/prosemirror-mentions - https://github.com/quartzy/prosemirror-suggestions - https://github.com/subconsciousnetwork/block-editor-web/blob/main/src/editor/plugins/inline-subtext.ts - https://github.com/curvenote/editor/tree/main/packages/prosemirror-autocomplete - https://claude.ai/chat/b5fbcdaf-b343-4168-8339-275f77c96fc7