chore: mark hcloud plan as completed

Author: skusnierz

docs/plans/2026-05-07-001-feat-rename-to-hcloud-multi-service-sdk-plan.md

@@ -1,7 +1,7 @@
 ---
 title: 'feat: rename to hcloud, add wallet auth and multi-service SDK shape'
 type: feat
-status: active
+status: completed
 date: 2026-05-07
 origin: docs/brainstorms/2026-05-07-hcloud-multi-service-sdk-requirements.md
 ---