feat: implement list ownership and access control

- Modified createList to assign ownerId to authenticated user
- Updated getLists to filter by user access (owner or collaborator)
- Added ownership checks to updateList (owner or editor can update)
- Added ownership checks to deleteList (only owner can delete)
- Implemented access control for all item operations (create, update, delete, toggle)
- Updated getItem, searchItems, and getItemsByFilter to enforce access control
- Added dynamic rendering to pages that use authentication
- Cascade deletion already handled by database schema (onDelete: Cascade)

Requirements: 4.1, 4.2, 4.3, 4.5

app/list/[id]/item/[itemId]/page.tsx

@@ -6,6 +6,8 @@ import { ArrowLeft, Edit } from 'lucide-react'
 import DeleteItemButton from '@/components/DeleteItemButton'
 import ToggleItemButton from '@/components/ToggleItemButton'
 
+export const dynamic = 'force-dynamic'
+
 interface PageProps {
   params: {
     id: string