Add session eject feature and terminal UX improvements
- Add eject button for tmux sessions (keeps tmux running, removes from Spiceflow)
- Add refresh button to session settings for all providers
- Improve terminal controls: larger buttons, more zoom levels (50-150%), copy selection, paste clipboard, enter key
- Fix session navigation: properly reload when switching between sessions
- Update tmux screen presets to larger dimensions (fullscreen 260x48, desktop 120x48, landscape 80x24)
- Add testing documentation to CLAUDE.md
- Refactor E2E tests to use API-based cleanup
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Adam Jeniski
5171059692