Board AI Tools, Sidebar Drag & Drop, Mobile Polish

AI coworkers can now create and edit boards, sidebar areas are reorderable via drag and drop, and mobile gets spreadsheets and voice recording.

Features

8 new AI tools for creating, reading, updating, and deleting board elements
Sidebar drag-and-drop to reorder areas and projects
Twitter/X social post support with editor and preview
Desktop OAuth flow via system browser with deep-link callback
Spreadsheet viewer on mobile (read-only)
Document picker, mention autocomplete, and voice recording on mobile
Shared ProjectAreaFilter component for calendar, feed, and tasks

Improvements

Notification content pipeline consolidated into shared sanitization logic
Unassigned filter option for task queries
Page content previews improved (8KB limit, Lexical JSON validation)
Lexical mini renderer for knowledge base resource cards
Tab bar blur effect on mobile

Bug Fixes

Calendar scroll and day cell stretching

AI coworkers can now work with boards — creating diagrams, adding elements, and updating content programmatically. The sidebar got drag-and-drop reordering, and mobile received several quality-of-life improvements including spreadsheet viewing and voice recording.