v0.164.0: Grouped slash commands, cloud sync control, and MCP and login fixes

New features

- Grouped slash commands - Slash commands are now organized by category for easier browsing
- Cloud sync control - New setting to control whether your data syncs to the cloud (app)

Improvements

- Linear model picker - Model names now display cleanly in the Linear delegation picker (app)
- Computer provisioning wizard - Clarified copy in the droid computer provisioning wizard (app)

Bug fixes

- MCP tool names - Tool names containing dots are now accepted per the MCP specification
- MCP authentication - Restored sign-in to MCP servers that reject certain OAuth client registration
- Background processes in droid exec - Agent-spawned background processes now keep running after droid exec exits
- Editor for allow/deny lists - The CLI now honors $EDITOR when editing allow and deny lists on headless hosts
- Gemini reasoning - Fixed handling of invalid Gemini reasoning blocks
- Droid computer SSH - Fixed connecting to a droid computer by its exact name
- Cross-org login - Fixed login issues when working across multiple organizations (app)