keras3-cpu: Add system-monitor setting

It is not active yet, since it requires jupyter-resource-usage>=1, which
is not installed, currently, but might be updated someday.

keras3-cpu/Dockerfile

@@ -140,6 +140,7 @@ RUN mamba install --yes --no-update-deps \
 USER root
 # activate extensions by default
 COPY plugin.jupyterlab-settings "/home/${NB_USER}/.jupyter/lab/user-settings/@jupyterlab/extensionmanager-extension/"
+COPY plugin.jupyterlab-settings "/home/${NB_USER}/.jupyter/lab/user-settings/@jupyter-server/resource-usage/"
 RUN chown -R ${NB_USER} "/home/${NB_USER}/.jupyter" && \
     # history search with Page Up/Down
     sed -i "s/^# \(.*history-search.*\)/\1/" /etc/inputrc && \

keras3-cpu/topbar-item.jupyterlab-setting

+{
+    "enable": true,
+    "refreshRate": 2500,
+    "memory": {
+        "label": "Mem: "
+    },
+    "cpu": {
+        "label": "CPU: "
+    }
+}