v0.135.0: Adaptive terminal theme, agent-browser update, and stability fixes

New features

- Adaptive terminal theme - The CLI now auto-detects your terminal background and picks a matching theme

Improvements

- Agent-browser update - Updated the bundled agent-browser skill to a newer release with better automation reliability
- Subagent type badges - Subagent type badges in TaskOutput now render in PascalCase for easier reading

Bug fixes

- Message draft attachments - Message draft attachments are now preserved when switching contexts (app)
- Session activity indicator - Improved the activity indicator in the session panel (app)
- Enterprise Controls forms - Empty arrays and records are no longer written when saving Enterprise Controls (app)
- Enterprise Controls layout - Aligned control heights across Enterprise Controls forms (app)