v0.83.0: Redesigned model selector and session list, active tool call spinner, and skill slash command fixes

New features

- Redesigned model selector and session list - Overhauled model selector and session list with improved navigation and layout
- Active tool call spinner - A spinner now displays during active tool calls for better visibility into CLI activity
- Configurable subagent inactivity timeout - New subagentInactivityTimeout setting to customize how long subagents wait before timing out due to inactivity

Bug fixes

- Diff syntax highlighting - Fixed syntax highlighting issues in diff display
- Skill slash command arguments - Fixed user arguments not being passed to skills invoked via slash commands
- CLI status orb display - Fixed random display issues with the CLI status orb
- Double loader on new session - Fixed a duplicate loading indicator appearing when creating a new session (Factory App)
- Sidebar button accessibility - Fixed sidebar buttons being covered by the draggable region (Factory App)
- Whitespace in working directory input - Input for working directory now correctly trims whitespace (Factory App)
- Daemon connectivity - Fixed daemon connection issues that could occur on some systems