fix(dashboard): use _total suffix for nautobot change counters

[dmathur0]

Summary

• The Render Events panels in the Config Manager Overview dashboard queried the bare counter names nv_config_manager_nautobot_change_messages_processed / _failed.
• prometheus_client exposes counters with a _total suffix (the live series are ..._processed_total / ..._failed_total), so these expressions never matched and the panels showed no data in any namespace (verified against live Prometheus).
• Appended _total so the queries resolve. Applied to both the deployed chart copy and the docs copy.

Verification

• Confirmed the live series names in Prometheus: nv_config_manager_nautobot_change_messages_processed_total (and _failed_total) exist and carry data in active namespaces.
• Both JSON files validated as parseable.

Notes

• This does not change the metric prefix; counters defined in src/nv_config_manager/render/dispatch.py already use the nv_config_manager_ namespace.

Summary by CodeRabbit

• Bug Fixes
  • Updated the “Render Events” dashboard panel to use the latest metric names for processed and failed events.
  • Kept the existing chart layout, legends, and filtering behavior unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: fec3a34d-07c4-4ea7-ba18-47016535b781

📥 Commits

Reviewing files that changed from the base of the PR and between d0da593 and 972f35c.

📒 Files selected for processing (2)

• deploy/helm/dashboards/nv-config-manager-overview.json
• docs/assets/static/nv-config-manager-overview.json

🚧 Files skipped from review as they are similar to previous changes (2)

• deploy/helm/dashboards/nv-config-manager-overview.json
• docs/assets/static/nv-config-manager-overview.json

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📝 Walkthrough

Walkthrough

The Render Events dashboard queries were updated in both dashboard JSON copies to use the new _processed_total and _failed_total Prometheus metric names.

Changes

Render Events panel metric rename

Layer / File(s)	Summary
Panel query updates deploy/helm/dashboards/nv-config-manager-overview.json, docs/assets/static/nv-config-manager-overview.json	The Render Events Prometheus targets now query nv_config_manager_nautobot_change_messages_processed_total and nv_config_manager_nautobot_change_messages_failed_total instead of the previous metric names.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 I hopped through dashboards, neat and bright,
New metric names now fit just right.
Processed, failed—both count the same,
The Render Events panel keeps its frame.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: updating Nautobot change counter metrics to use the _total suffix in dashboards.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch davesh/fix-dashboard-counter-total

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[github-actions]

Docs preview: https://nvidia-preview-nv-config-manager-pr-71.docs.buildwithfern.com/switch-infrastructure/config-manager

[ryanheffernan]

lgtm, if you can please rebase and run unit tests i'll approve