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Add Forgejo repository health metrics and Grafana dashboard (#245)

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## Summary
- New `forgejo_metrics` Ansible role that queries the Forgejo REST API every 60s and writes Prometheus textfile metrics (open PRs, issues, languages, releases, commits, Actions runs/duration/success)
- Grafana dashboard "Forgejo Repository Health" with 12 panels across 4 rows: overview stats, CI/CD health, repository info, and staleness tracking
- Deletes superseded `forgejo-actions-dashboard` plan doc (this implementation covers a broader scope)

## Deployment and Testing
- [ ] `mise run provision-indri -- --tags forgejo_metrics` to deploy the collector
- [ ] `ssh indri 'cat /opt/homebrew/var/node_exporter/textfile/forgejo.prom'` to verify metrics
- [ ] `argocd app sync grafana-config` to deploy the dashboard
- [ ] Check Grafana dashboard "Forgejo Repository Health" loads with data
- [ ] `mise run services-check` passes

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/245
This commit is contained in:
Erich Blume 2026-02-22 11:16:03 -08:00
commit 2c081eed28
12 changed files with 989 additions and 201 deletions
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@ -60,7 +60,6 @@ Migration and transition plans for upcoming infrastructure changes.
| [[adopt-dagger-ci]] | Adopt Dagger as CI/CD build engine |
| [[upstream-fork-strategy]] | Stacked-branch forking strategy for upstream projects |
| [[adopt-oidc-provider]] | Deploy OIDC identity provider for SSO across services |
| [[forgejo-actions-dashboard]] | Grafana dashboard for Forgejo Actions CI metrics |
| [[upgrade-grafana-helm-chart]] | Upgrade Grafana Helm chart from 8.8.2 to 11.x |
| [[operationalize-reolink-camera]] | Cloud-free NVR with Frigate and ring buffer recording |