feat: implement ViewConfigPanel full interaction support (Airtable-style)

- Replace read-only ToggleIndicator with interactive Switch components
- Add inline-edit Input for view title
- Add ViewType select dropdown for switching view types
- Make Columns/Filters/Sort rows clickable with onOpenEditor callback
- Add local draft state with Save/Discard buttons
- Wire up ObjectView with draft state and onSave/onViewUpdate/onOpenEditor callbacks
- Add i18n keys (save/discard) in all 10 locales
- Add 27 tests covering all interactive features

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot