- adds disk IO
- removes error rate (its in the first row in the second section anyway)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
## Release Notes
* **New Features**
* Added Disk IO metric card to monitor disk input/output performance in
real-time.
* **Changes**
* Removed Error Rate metric from database infrastructure monitoring
dashboard.
* Renamed "Disk" metric to "Disk Usage" for improved clarity.
* Enhanced disk metrics with refined measurements and calculations.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Observability Dashboard: unified overview for service health and
database infrastructure with interactive charts and metric cards (CPU,
memory, disk I/O, connections, error rate, slow queries).
* Service Health Monitoring: per-service health cards and a
multi-service table with error/warning counts and drill-down links to
reports/logs.
* Interval Selector: new chart-interval dropdown with plan-aware
retention messaging.
* Menu & Reports: updated Observability menu with Overview entry and
Custom Reports management.
* **Documentation**
* Added a footer link to troubleshooting guides.
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Safer error rendering across analytics and reporting with a fallback
"Unknown error".
* **Tests**
* Added unit tests covering timeseries sorting and timestamp validation.
* **Refactor**
* Standardized timeseries hook and all callers to accept a single
options object and improved nullish handling.
* **New Features**
* Exposed timeseries utilities and explicit options/result types;
exported chart data type.
* **Chores**
* Relaxed index signatures to allow dynamic metric keys.
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
- refactors new charts in homepage to use stable analytics endpoints
- changes are behind newHomepageUsageV2 flag
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Centralized per-service health metrics hook with per-service data,
loading/error states and refresh.
* **Improvements**
* Time-series normalization into fixed buckets aligned to an end time.
* Updated UI: success-rate formatting, per-service loading/error
surfaced, refreshed click/refresh behavior; removed delta display.
* **Removals**
* Legacy project-metrics query and mapping utilities removed.
* **Tests**
* Extensive unit tests added for date ranges, bucket normalization, and
health metric calculations; some obsolete tests removed.
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Francesco Sansalvadore