fix: Set better Chart Axis Bounds

[pulpdrew]

Closes HDX-3180

Summary

This PR makes a couple of changes to TimeChart axis bounds

1. Y Axis lower bound is now always 0 unless a series is selected (partial revert of feat: Add chart legend series filtering #1572)
2. X-Axis bounds have been adjusted so that
   1. There is no longer an empty partial interval's worth of space at the end of line charts
   2. The first bar of a bar chart no longer overlaps with the Y Axis

Before

• The first Bar in bar charts overlaps the Y Axis

• There is an empty partial (or full) interval at the end of charts

• Y Axis lower bound is non-zero when no series are selected

After

• Bars fit fully within the chart domain

• There is no empty space at the end of the line charts
• Y Axis lower bound is always 0 when no series are selected

[changeset-bot]

🦋 Changeset detected

Latest commit: 35cb617

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@hyperdx/app	Patch
@hyperdx/api	Patch

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Project	Deployment	Review	Updated (UTC)
hyperdx-v2-oss-app	Ready	Preview, Comment	Jan 9, 2026 8:28pm

[claude]

Code Review

✅ No critical issues found.

The changes properly fix chart axis bounds with clean implementation:

Strengths:

• Y-axis now defaults to 0 (better UX for most time-series charts)
• X-axis domain calculation correctly handles bar chart padding
• Proper use of isSameSecond and date-fns utilities
• New required props passed from sole caller (DBTimeChart.tsx)
• Changeset file included

Minor observations:

• dateRangeEndInclusive defaults to true in MemoChart signature but is set to false in convertToTimeChartConfig - ensure this is intentional behavior
• Consider adding JSDoc comment to explain the half-granularity padding logic for bar charts (lines 597-603)

Changes are well-contained and safe to merge.

[github-actions]

E2E Test Results

✅ All tests passed • 59 passed • 4 skipped • 864s

Status	Count
✅ Passed	59
❌ Failed	0
⚠️ Flaky	1
⏭️ Skipped	4

Tests ran across 4 shards in parallel.

View full report →

[brandon-pereira]

Nice, ty!