Perform CRUD operations on a Weaviate multi-tenant collection with correct tenant routing

Steps

1. Always pass the tenant name when inserting objects: collection.with_tenant('tenant_a').data.insert({'text': 'hello'})
2. For batch inserts wrap each object with the tenant identifier to route writes to the correct shard
3. Query with tenant context: collection.with_tenant('tenant_a').query.near_text(query='hello', limit=5) — results are strictly scoped to that tenant's shard
4. Delete objects by UUID scoped to the tenant: collection.with_tenant('tenant_a').data.delete_by_id(uuid)
5. Update objects similarly with the tenant context — cross-tenant writes are rejected with an authorization error
6. Validate tenant existence before CRUD operations to surface configuration errors early rather than at query time