Initial commit: arr-stack homelab + local AI

Docker Compose media stack (gluetun, *arr, Jellyfin), Ternary-Bonsai AI
(Open WebUI, Forgejo, optional OpenHands), and Ansible bootstrap for the
SER5 Ubuntu host.

ansible/roles/amd_vulkan/handlers/main.yml

@@ -0,0 +1,6 @@
+---
+- name: Reload udev
+  ansible.builtin.shell: |
+    udevadm control --reload-rules
+    udevadm trigger
+  changed_when: true