Remove obsolete audio and buzzer control documentation files, including detailed guides and HTML interfaces, to streamline the repository and eliminate redundancy. This cleanup enhances maintainability and focuses on essential resources for the reTerminal DM4 audio and buzzer functionalities.

emmc-provisioning/host/cm4-flash.service

@@ -0,0 +1,21 @@
+[Unit]
+Description=CM4 eMMC provisioning (rpiboot + backup/deploy)
+# Run after udev has settled; do not block boot
+After=systemd-udevd.service
+DefaultDependencies=yes
+
+[Service]
+Type=oneshot
+# Delay so USB device is enumerated and udev permissions applied before we run
+ExecStartPre=/bin/sleep 5
+ExecStart=/opt/cm4-provisioning/flash-emmc-on-connect.sh
+# Run as root; flash script logs to /var/lib/cm4-provisioning/flash.log
+User=root
+StandardOutput=journal
+StandardError=journal
+# Allow long run: rpiboot + wait for choice + dd 32GB (~20–35 min) + optional PiShrink (~15–30 min)
+TimeoutStartSec=7200
+
+[Install]
+# Only started by udev trigger, not at boot
+WantedBy=multi-user.target