Full rearchitecture using Claude

- event bus systen
- all components are independent
- preparation for web frontend

python-backend/musicmouse.service

@@ -0,0 +1,24 @@
+# Put this into /etc/systemd/system/musicmouse.service
+#
+# Assumes the repo is checked out at /opt/musicmouse with a venv at /opt/musicmouse/.venv:
+#   /opt/musicmouse/.venv/bin/pip install -e /opt/musicmouse/python-backend
+#
+# A dropped serial link is now handled in-process (SerialLink reconnects), so
+# Restart=always is only for genuine crashes.
+
+[Unit]
+Description=Music Mouse RFID Music Player
+After=multi-user.target sound.target network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=5
+WorkingDirectory=/opt/musicmouse/python-backend
+ExecStart=/opt/musicmouse/.venv/bin/python -m musicmouse --config /media/musicmouse/config.yml
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target