refactor: migrate solo to workspace store

app/api/products/[id]/solo-workspace/route.ts

@@ -0,0 +1,25 @@
+import { authenticateApiRequest } from '@/lib/api-auth'
+import { getSoloWorkspaceSnapshot } from '@/lib/solo-workspace-server'
+
+export const dynamic = 'force-dynamic'
+
+export async function GET(
+  request: Request,
+  { params }: { params: Promise<{ id: string }> },
+) {
+  const auth = await authenticateApiRequest(request)
+  if ('error' in auth) {
+    return Response.json({ error: auth.error }, { status: auth.status })
+  }
+
+  const { id } = await params
+  const url = new URL(request.url)
+  const sprintId = url.searchParams.get('sprint_id')
+  const snapshot = await getSoloWorkspaceSnapshot(id, auth.userId, sprintId)
+
+  if (!snapshot) {
+    return Response.json({ error: 'Solo workspace niet gevonden' }, { status: 404 })
+  }
+
+  return Response.json(snapshot)
+}