feat(proxyd): update dashboard

[cjorge-graphops]

Summary by CodeRabbit

• New Features
  • Proxyd SRE dashboard refreshed: default view extended to 7 days, switched to VictoriaMetrics datasource, clearer error-rate aggregation/labels, standardized percent-change colors, improved Versions panel, added high-error thresholds, and layout refinements for readability.
• Documentation
  • Updated README version badge to 0.7.1.
• Chores
  • Bumped chart version to 0.7.1.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Bumps the Helm chart version for proxyd from 0.7.0 to 0.7.1 and updates the README badge accordingly. Updates the Grafana dashboard JSON to v0.9.1, switching datasource to VictoriaMetrics, adjusting time range, IDs/UID/version, refining PromQL queries, thresholds, labels, and layout metadata.

Changes

Cohort / File(s)	Summary
Helm chart version bump charts/proxyd/Chart.yaml	Chart version updated 0.7.0 → 0.7.1; appVersion unchanged.
README badge update charts/proxyd/README.md	Version badge updated 0.7.0 → 0.7.1.
Grafana dashboard refresh charts/proxyd/dashboards/proxyd.json	Dashboard v0.9.0 → v0.9.1: id 102 → 105; uid updated; version 90 → 91; time range now-1h → now-7d; added preload=false; datasource templating switched to VictoriaMetrics; PromQL queries refactored (range, editorMode, aggregation, zero-filling); added percentChangeColorMode, displayName, extra thresholds (80 red); layout coordinates adjusted; transformations updated (indexByName, renameByName).

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Suggested reviewers

• i0n

✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch proxyd/update-dashboard

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 605fa4d and e94a3e6.

📒 Files selected for processing (3)

• charts/proxyd/Chart.yaml (1 hunks)
• charts/proxyd/README.md (1 hunks)
• charts/proxyd/dashboards/proxyd.json (25 hunks)

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