Refactor code structure for improved readability and maintainability

src/app/api/notifications/route.ts

@@ -8,7 +8,7 @@ export async function GET() {
     if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
 
     const result = await query(
-      `SELECT id, type, title, description, link, is_read, created_at
+      `SELECT id, type, title, description, link, is_read, created_at, context_id, context_type
        FROM notifications
        WHERE user_id = $1
        ORDER BY created_at DESC
@@ -24,6 +24,8 @@ export async function GET() {
       link: r.link,
       read: r.is_read,
       timestamp: r.created_at,
+      contextId: r.context_id,
+      contextType: r.context_type,
     }))
 
     const unreadResult = await query(