- Replaced local state management in `ObjectivesBoard` with `useObjectivesCollapse` hook for better state handling.
- Updated collapse button logic to use the new hook's toggle function, improving code clarity.
- Refactored `useColumnVisibility` to load user preferences on mount and persist visibility changes, enhancing user experience.
- Integrated user preferences for Kanban filters in `TasksContext`, allowing for persistent filter settings across sessions.
- Introduced `isPinned` property to the `Tag` model for marking main objectives.
- Updated `TagForm` to include a checkbox for setting tags as pinned, enhancing user interaction.
- Enhanced `KanbanBoardContainer` to display pinned tasks in a dedicated `ObjectivesBoard`, improving task visibility.
- Modified `KanbanFilters` to support filtering by pinned tags, streamlining task management.
- Adjusted `TasksContext` to separate pinned tasks from regular tasks for better organization.
