xenna_grafana_dashboard.json missing from the wheel — Xenna Grafana dashboard is never provisioned

Summary

nemo_curator/metrics/xenna_grafana_dashboard.json exists in the git tree but is not included in the published wheel, so launch_grafana's dashboard copy silently skips and wheel users never get the Xenna dashboard in Grafana.

Reproduction (nemo-curator 1.2.0)

$ pip install nemo-curator
$ ls .venv/lib/python3.12/site-packages/nemo_curator/metrics/
__init__.py  constants.py  start_prometheus_grafana.py  utils.py

The json (and the module README) are absent. In nemo_curator/metrics/utils.py the copy is guarded:

xenna_dashboard_src = os.path.join(os.path.dirname(__file__), "xenna_grafana_dashboard.json")
...
if os.path.isfile(xenna_dashboard_src) and not os.path.isfile(xenna_dashboard_dst):
    shutil.copy(xenna_dashboard_src, xenna_dashboard_dst)

so the missing file skips silently: start_prometheus_grafana provisions the four auto-generated Ray dashboards but never the Xenna one.

Expected

The Xenna dashboard json ships in the wheel (package data), so monitoring set up per the metrics README includes the Xenna dashboard.

Suggested fix

Include nemo_curator/metrics/*.json as package data in the build configuration; optionally log a warning instead of skipping silently when the source json is missing.

Inspect the build configuration alongside nemo_curator/metrics/xenna_grafana_dashboard.json and nemo_curator/metrics/utils.py, then review the launch_grafana entry point. Build or install a wheel using the reproduction steps and verify that the Xenna JSON is present under nemo_curator/metrics and that dashboard provisioning can find it.