v0.12.0

• Add experimental workspace presence with shared cursors and user avatars.
• Let widgets and views attach text and files to chats.
• Make Overview the default workspace home and improve navigation, workspace menus, and settings.
• Improve chat loading and reliability, and keep model choices in sync with Claude Code, Codex, and Hermes.
• Add a local UI component registry for building widgets and views.
• Fix Windows workspace initialization, global-install startup, and applet builds after dependency changes.

Full changelog