Set Europe/Paris timezone in all nuc containers

Applied live to the 5 running containers; install scripts and the
post-install checklist now include the timedatectl step.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

nuc/jellyfin-client.md

@@ -56,6 +56,7 @@ for i in $(seq 1 30); do
 done
 
 incus config set "$CNAME" environment.DEBIAN_FRONTEND=noninteractive
+incus exec "$CNAME" -- timedatectl set-timezone Europe/Paris
 
 # --- Host devices -------------------------------------------------------------
 # iGPU (card + render nodes). gid=44 = "video" group inside the container.

nuc/jellyfin-server.md

@@ -34,6 +34,7 @@ for i in $(seq 1 30); do
 done
 
 incus config set "$CNAME" environment.DEBIAN_FRONTEND=noninteractive
+incus exec "$CNAME" -- timedatectl set-timezone Europe/Paris
 incus config set "$CNAME" environment.DEBCONF_NONINTERACTIVE_SEEN=true
 
 # --- Jellyfin from the official repository -----------------------------------

nuc/nuc-install.md

@@ -250,6 +250,9 @@ Both logs rotate monthly (`/etc/logrotate.d/incus-*`).
       `/etc/systemd/system/incus.service.d/after-zfs.conf` with
       `[Unit]` / `After=zfs-mount.service zfs.target`
 - [ ] `boot.autostart=true` on blocky, privoxy, jellyfin-*
+- [ ] Timezone `Europe/Paris` on host and in every container
+      (`incus exec <ct> -- timedatectl set-timezone Europe/Paris`;
+      the install scripts in the per-container docs include it)
 - [ ] Host boots to `multi-user.target`, nothing grabs the GPU
       (required by the jellyfin-client kiosk)
 - [ ] Jellyfin web at `http://192.168.0.5:8096`, kiosk UI on HDMI,

nuc/transmission-bt.md

@@ -44,6 +44,7 @@ IMAGE="${IMAGE:-images:ubuntu/24.04}"
 incus launch "$IMAGE" "$CNAME"
 sleep 8
 incus config set "$CNAME" environment.DEBIAN_FRONTEND=noninteractive
+incus exec "$CNAME" -- timedatectl set-timezone Europe/Paris
 
 # static LAN config, NO default route (kill switch), /32 to the WG endpoint
 incus exec "$CNAME" -- bash -c 'cat > /etc/netplan/10-lxc.yaml <<EOF