Feature: Favorites for spaces and rooms

[mjkatgithub]

Goal

Allow users to favorite important spaces and rooms for quick access.

Scope

• Add favorite/unfavorite actions for spaces and rooms
• Provide a stable favorites section in the navigation
• Persist favorites locally for MVP

Branch

feature/favorites-spaces-rooms

Acceptance Criteria

• Users can favorite and unfavorite spaces and rooms
• Favorites are visible in a dedicated navigation section
• Favorites persist after reload and invalid entries are handled safely

Test Checklist

Unit

• Favorite state read/write and toggle logic
• Safe fallback behavior for removed entities

Integration

• Navigation renders favorites consistently
• Favorite actions update UI state immediately

E2E

• Mark space and room as favorite, reload, verify persistence
• Remove favorite and verify immediate navigation update

Notes

• Coordinate with room/category ordering features to avoid UX conflicts.