Rename every remaining voxip name to daynivo, with a one-time migration

Services (daynivo-kiosk-*, daynivo-network-guard, daynivo-boot-import),
programs in /usr/lib/daynivo-kiosk, folders /etc, /var/lib, /var/log and
/var/cache daynivo-kiosk*, the system user daynivo, DAYNIVO_* settings,
the plymouth theme, network profiles daynivo-eth0/wlan0, the image stage
and its first user daynivoadmin.

install.sh moves a kiosk installed up to 1.2.x over once: old services
stopped and removed, folders moved (configuration, password, browser
profile, logs) with symlinks under the old names, the voxip user renamed
with the same uid, network profiles renamed unless a change awaits
confirmation, and old leftovers removed. Tested by upgrading a configured
1.2.0 installation in a container, and running the install a second time.

Old names keep working where people type or place them: voxip-config.json,
voxip-authorized_keys, voxip-network-reset, voxip-kiosk-ctl, and
VOXIP_DEFAULT_URL / VOXIP_DEVICE_NAME for image builds.

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

systemd/daynivo-kiosk-browser.service

@@ -0,0 +1,36 @@
+[Unit]
+Description=Daynivo Kiosk Chromium
+Documentation=file:///usr/share/doc/daynivo-kiosk/README.md
+Requires=daynivo-kiosk-x.service
+After=daynivo-kiosk-x.service daynivo-boot-import.service
+# Restarting or stopping X restarts/stops the browser as well.
+PartOf=daynivo-kiosk-x.service
+# A crash loop stops after 6 starts in 10 minutes; the healthcheck logs it
+# and retries after a cool-down (see daynivo-kiosk-healthcheck).
+StartLimitIntervalSec=600
+StartLimitBurst=6
+
+[Service]
+Type=simple
+User=kiosk
+Group=kiosk
+Environment=DISPLAY=:0
+Environment=XAUTHORITY=/run/daynivo-kiosk-x/Xauthority
+Environment=HOME=/home/kiosk
+RuntimeDirectory=daynivo-kiosk-browser
+RuntimeDirectoryMode=0755
+StateDirectory=daynivo-kiosk-browser
+StateDirectoryMode=0700
+ExecStart=/usr/lib/daynivo-kiosk/daynivo-kiosk-browser
+# daynivo-kiosk-browser exits 1 after a crash when browser_restart is on, 0 when it is off.
+Restart=on-failure
+RestartSec=5
+TimeoutStopSec=15
+KillMode=control-group
+OOMScoreAdjust=-100
+LogRateLimitIntervalSec=30s
+LogRateLimitBurst=300
+SyslogIdentifier=daynivo-kiosk-browser
+
+[Install]
+WantedBy=multi-user.target