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Jordi Enric
bef828ae48
## Problem The dashboard's timezone picker (#45517) propagates to log timestamps and the shared TimestampInfo component, but observability and reports charts still render their X-axis labels, range labels, and tooltip headers in the browser's local timezone. The result is jarring once a user picks a non-local timezone: hover a chart and you get one tz, hover a log row and you get another. ## Fix Routes all display-side timestamp formatting in the chart layer through the existing picker-aware helpers (\`useFormatDateTime\` / \`formatDateTime\`) so chart UI matches the rest of the dashboard. - **ComposedChart.utils** \`CustomTooltip\` (the hotspot — drives every observability dashboard tooltip): reads the active timezone via \`useTimezone\` for both the header label and the formatted timestamp. - **AreaChart** / **BarChart**: introduce a \`formatChartDate\` helper that honours each component's existing \`displayDateInUtc\` prop, otherwise routes through the picker. - **ChartBlock**: the two recharts \`labelFormatter\` arrows now close over \`useFormatDateTime\`. - **ChartHighlightActions**: range labels in the zoom dropdown migrated to the same hook. Intentionally untouched (must stay UTC): - \`ChartHandler\` / \`ChartBlock\` \`startDate\`/\`endDate\` (API range params, day boundary). - \`ChartBlock.tsx:166\` explicit \`.utc()\` data-key normalisation. - \`useFillTimeseriesSorted\` and friends (range math, no display). ## How to test - Sign in. Open the avatar dropdown, pick a timezone different from your browser local (e.g. Asia/Tokyo). - Visit any project, then \`/project/<ref>/reports/database\` (or any \`/observability/...\` page). - Hover any chart series — the tooltip header should display the chosen IANA name and times in that timezone. - Click-drag a range on a chart to open the zoom dropdown — start/end labels in the menu should also be in the chosen timezone. - Switch back to "Auto detect" and confirm everything reverts to browser-local. - For an AreaChart/BarChart that uses \`displayDateInUtc\` (e.g. some legacy reports), confirm those still render in UTC regardless of picker. <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Refactor** * Standardized date/time formatting across charts, tooltips, axis labels, header/footer labels, and highlight range labels in Reports and chart components. * Switched to a shared, timezone-aware formatter that respects UTC display mode or the selected picker/timezone, ensuring consistent, human-readable timestamps throughout the UI. <!-- end of auto-generated comment: release notes by coderabbit.ai -->