v0.127.1

## 🚀 Features

* fix(frontend): dropdown menu rendering behind antd drawer/modal (z-index regression) (#11604) @aks07
* feat(billing): migrate BillingUsageGraph from uPlotLib to uPlotV2 and added stacking (#11579) @SagarRajput-7
* feat: adding get cloud integration service for account handler (#11497) @swapnil-signoz
* feat(dashboards): V2 dashboard — sections, drag-and-drop & panel management (#11544) @AshwinBhatkal
* feat(trace-details): lazy aggregations + waterfall v4 cutover (#11556) @aks07
* fix(trace-flamegraph): prevent layout hang on very wide traces (#11578) @aks07
* feat(cloud-integrations): adding endpoint services metadata for account (#11563) @swapnil-signoz
* feat: v2 dashboard update, lock, unlock, and patch API (#11481) @namanv3
* test(alerts): add tests for list alerts & triggered alerts (#11554) @H4ad
* feat(dashboards): V2 dashboard details — base scaffolding (#11543) @AshwinBhatkal

## 🐛 Bug Fixes

* fix(frontend): dropdown menu rendering behind antd drawer/modal (z-index regression) (#11604) @aks07
* fix(trace-flamegraph): prevent layout hang on very wide traces (#11578) @aks07
* fix: ui issues in Trace and logs (#11564) @tewarig
* fix: time not being updated issue in domainlist and traces (#11460) @tewarig
* fix(dashboards): variables can be undefined when create new dashboard (#11155) @H4ad
* fix: do not show errors for non-existent cost meter metrics (#10843) @namanv3
* fix: service integration tests fix (#11598) @swapnil-signoz
* fix: remove widget filter references when a dashboard variable is deleted (#11270) @rinkydevi

## 🧰 Maintenance

* chore(release): bump SigNoz to v0.127.1 (#11606) @primus-bot
* chore(alertmanager): support custom receiver configs (#11473) @srikanthccv
* chore: replace perses/perses with perses/spec and introduce kind enum values (#11559) @namanv3
* chore(codeowners): move openapi schema generation ownership to backend (#11585) @H4ad
* chore: removed workspace suspended page's text for data retention (#11501) @SagarRajput-7
* chore(dashboard): remove obsolete Sentry query-range timeout warning (#11576) @AshwinBhatkal
* chore: add metric for waterfall monitoring (#11557) @krsoninikhil
* refactor: service response changes and dashboardID handling (#11485) @swapnil-signoz
* refactor(sentry-config): disable tracing & ensure correct environment (#11552) @H4ad
* refactor(types): tighten MetricQueryRangeSuccessResponse shape (#11562) @ahrefabhi

**Full Changelog**: https://github.com/SigNoz/signoz/compare/v0.127.0...v0.127.1