platform: OpenTofu/Ansible für Proxmox, CI, Makefile, Doku-Abgleich

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

platform/proxmox/ansible/roles/gpu-node/handlers/main.yml

@@ -0,0 +1,12 @@
+- name: configure nvidia runtime
+  ansible.builtin.command: nvidia-ctk runtime configure --runtime=docker
+  notify: restart docker
+
+- name: restart docker
+  ansible.builtin.service:
+    name: docker
+    state: restarted
+
+- name: reload systemd
+  ansible.builtin.systemd:
+    daemon_reload: true