fix(plex): restart service after update to apply new version

After apt install updates the plexmediaserver package, the running
service needs an explicit restart so the new version is loaded.
Without this, users see the update succeed but Plex still shows
the old version in the web interface.

Ref #12993

CHANGELOG.md

@@ -423,6 +423,8 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
 </details>
 
+## 2026-03-17
+
 ## 2026-03-16
 
 ### 🆕 New Scripts

ct/plex.sh

@@ -79,6 +79,11 @@ function update_script() {
   $STD apt update
   $STD apt install -y plexmediaserver
   msg_ok "Updated Plex Media Server"
+
+  msg_info "Restarting Plex Media Server"
+  systemctl restart plexmediaserver
+  msg_ok "Restarted Plex Media Server"
+
   msg_ok "Updated successfully!"
   exit
 }

misc/tools.func

@@ -4676,16 +4676,9 @@ _setup_rocm() {
     return 0
   }
 
-  # AMDGPU driver repository (append to same keyring)
-  {
-    echo ""
-    echo "Types: deb"
-    echo "URIs: https://repo.radeon.com/amdgpu/latest/ubuntu"
-    echo "Suites: ${ROCM_REPO_CODENAME}"
-    echo "Components: main"
-    echo "Architectures: amd64"
-    echo "Signed-By: /etc/apt/keyrings/rocm.gpg"
-  } >>/etc/apt/sources.list.d/rocm.sources
+  # Note: The amdgpu/latest/ubuntu repo (kernel driver packages) is intentionally
+  # omitted — kernel drivers are managed by the Proxmox host, not the LXC container.
+  # Only the ROCm userspace compute stack is needed inside the container.
 
   # Pin ROCm packages to prefer radeon repo
   cat <<EOF >/etc/apt/preferences.d/rocm-pin-600
@@ -4694,7 +4687,26 @@ Pin: release o=repo.radeon.com
 Pin-Priority: 600
 EOF
 
-  $STD apt update || msg_warn "apt update failed (AMD repo may be temporarily unavailable) — continuing anyway"
+  # apt update with retry — repo.radeon.com CDN can be mid-sync (transient size mismatches).
+  # Run with ERR trap disabled so a transient failure does not abort the entire install.
+  local _apt_ok=0
+  for _attempt in 1 2 3; do
+    if (
+      set +e
+      apt-get update -qq 2>&1
+      exit $?
+    ) 2>/dev/null; then
+      _apt_ok=1
+      break
+    fi
+    msg_warn "apt update failed (attempt ${_attempt}/3) — AMD repo may be temporarily unavailable, retrying in 30s…"
+    sleep 30
+  done
+  if [[ $_apt_ok -eq 0 ]]; then
+    msg_warn "apt update still failing after 3 attempts — skipping ROCm install"
+    return 0
+  fi
+
   # Install only runtime packages — full 'rocm' meta-package includes 15GB+ dev tools
   $STD apt install -y rocm-opencl-runtime rocm-hip-runtime rocm-smi-lib 2>/dev/null || {
     msg_warn "ROCm runtime install failed — trying minimal set"