Fix PRI-592. The tns-csi driver runs in kube-system (like most CSI drivers),
not in the headlamp namespace.
- CLAUDE.md: Driver namespace: headlamp → kube-system
- docs/architecture/overview.md: fix API paths for controller pod access
from headlamp namespace to kube-system namespace
Co-Authored-By: Paperclip <noreply@paperclip.ing>