Time series charts ship; OAuth bearers auto-minted; GCP auth proxy added

Observability and evaluations

Engine

• Engine now shows only project-level spend in project view, so org-wide spend stays in the org settings surface.

• Engine now keeps the Slack issue-alert deck pinned above the scrolling issues list, so the callout stays visible as you browse.

Datasets and experiments The experiments table now displays loading progress bars showing the number of runs completed and evaluated, and experiments that predate this feature show a placeholder progress bar.

• Dashboards now support time series bar and line charts backed by the v2 chart API, so monitored metrics can use the newer chart type.

• Categorical feedback now shows derived percentages in experiment tables, so pass/fail metrics are easier to scan.

Prompts and playground

• Playground now mints OAuth bearers end to end for OAuth-enabled presets, so long-running batches and streams keep working.

Sandboxes

• Sandbox auth proxy now supports GCP auth flows, so sandbox workloads can reach Google APIs through the proxy.

Fixes

• The Engine trial modal no longer shows the rough-math LCU bullet, so the pricing copy is less misleading.