feat: add swimlane mode selection to KanbanFilters and BoardContainer

- Introduced `swimlanesMode` in `KanbanFilters` to toggle between 'tags' and 'priority' swimlanes.
- Updated `KanbanBoardContainer` to conditionally render `PrioritySwimlanesBoard` based on the selected mode.
- Enhanced UI to include dropdown for swimlane mode selection, improving user experience in task organization.
- Adjusted `TasksContext` to persist swimlane mode preferences, ensuring consistent behavior across sessions.

components/kanban/BoardContainer.tsx

@@ -3,6 +3,7 @@
 import { useState } from 'react';
 import { KanbanBoard } from './Board';
 import { SwimlanesBoard } from './SwimlanesBoard';
+import { PrioritySwimlanesBoard } from './PrioritySwimlanesBoard';
 import { ObjectivesBoard } from './ObjectivesBoard';
 import { KanbanFilters } from './KanbanFilters';
 import { EditTaskForm } from '@/components/forms/EditTaskForm';
@@ -73,14 +74,25 @@ export function KanbanBoardContainer() {
       )}
       
       {kanbanFilters.swimlanesByTags ? (
-        <SwimlanesBoard 
-          tasks={filteredTasks}
-          onDeleteTask={deleteTask}
-          onEditTask={handleEditTask}
-          onUpdateTitle={handleUpdateTitle}
-          onUpdateStatus={handleUpdateStatus}
-          compactView={kanbanFilters.compactView}
-        />
+        kanbanFilters.swimlanesMode === 'priority' ? (
+          <PrioritySwimlanesBoard 
+            tasks={filteredTasks}
+            onDeleteTask={deleteTask}
+            onEditTask={handleEditTask}
+            onUpdateTitle={handleUpdateTitle}
+            onUpdateStatus={handleUpdateStatus}
+            compactView={kanbanFilters.compactView}
+          />
+        ) : (
+          <SwimlanesBoard 
+            tasks={filteredTasks}
+            onDeleteTask={deleteTask}
+            onEditTask={handleEditTask}
+            onUpdateTitle={handleUpdateTitle}
+            onUpdateStatus={handleUpdateStatus}
+            compactView={kanbanFilters.compactView}
+          />
+        )
       ) : (
         <KanbanBoard 
           tasks={filteredTasks}