Premium Analytics: port the Average order value widget

[nerrad]

Fixes: WOOA7S-1461

Proposed changes

• Ports the Average order value widget into the Premium Analytics customizable dashboard.
• Registers the jpa/average-order-value widget and renders the shared order metric widget inside WidgetRoot using dashboard-level report params.
• Passes the dashboard widget error callback through to WidgetRoot so order-report failures can surface through the dashboard error UI.
• Adds standalone Default and WithComparison Storybook stories plus a dashboard-hosted WidgetDashboardWithWidget story for the widget.

Finishing changes (conform to the widget contract)

• Reverted the comparative-line-chart wrapper to import LineChart from the public @automattic/charts export (the export exists on trunk), so the shared toolkit file is now unchanged vs trunk and this widget is fully independent.
• render.tsx now types props with WidgetRenderProps<T> from @wordpress/widget-primitives, composing the widget's own attribute type with Partial<ReportParamsFieldAttributes>, and defaults attributes = {}.
• widget.ts declares the empty attribute shape as Record<never, never>.
• package.json: dropped the unused @wordpress/ui, added @wordpress/widget-primitives.
• Removed the spurious js-packages/storybook changelog entry (that project has no code changes; the changelog check passes without it).

Related product discussion/links

• WOOA7S-1461; parent WOOA7S-1457.
• Follows the widget port structure from Premium Analytics: port the Average items per order widget #49505.

Does this pull request change what data or activity we track or use?

No.

Testing instructions

• pnpm --filter @automattic/jetpack-premium-analytics typecheck
• pnpm --filter @automattic/jetpack-premium-analytics build
• From projects/js-packages/storybook, run Storybook (pnpm exec storybook dev -c ./storybook) and open the Packages / Premium Analytics / Widgets / AverageOrderValue stories.
• Confirm Default shows the metric value, WithComparison shows the value plus the comparative line chart, and WidgetDashboardWithWidget renders the widget in the host dashboard card.

[github-actions]

Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

• ✅ Include a description of your PR changes.
  
• ✅ Add a "[Status]" label (In Progress, Needs Review, ...).
  
• ✅ Add testing instructions.
  
• ✅ Specify whether this PR includes any changes to data or privacy.
  
• ✅ Add changelog entries to affected projects
  

This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖

---

Follow this PR Review Process:

1. Ensure all required checks appearing at the bottom of this PR are passing.
2. Make sure to test your changes on all platforms that it applies to. You're responsible for the quality of the code you ship.
3. You can use GitHub's Reviewers functionality to request a review.
4. When it's reviewed and merged, you will be pinged in Slack to deploy the changes to WordPress.com simple once the build is done.

If you have questions about anything, reach out in #jetpack-developers for guidance!

[jp-launch-control]

Code Coverage Summary

This PR did not change code coverage!

That could be good or bad, depending on the situation. Everything covered before, and still is? Great! Nothing was covered before? Not so great. 🤷

Full summary · PHP report

[chihsuan]

Rebased on trunk, conformed the port to the current widget contract, and reverted the comparative-line-chart import back to the public @automattic/charts LineChart export so the shared toolkit file is unchanged vs trunk — the widget is now fully independent.

Changed

• packages/widgets-toolkit/.../chart-comparative-line/comparative-line-chart.tsx — restored import { LineChart } from '@automattic/charts' (drops the deep-relative import; file now matches trunk).
• widgets/average-order-value/render.tsx — typed props via WidgetRenderProps<T> from @wordpress/widget-primitives, composed with Partial<ReportParamsFieldAttributes>, and defaulted attributes = {}.
• widgets/average-order-value/widget.ts — declared the empty attribute shape as Record<never, never>.
• widgets/average-order-value/package.json — dropped unused @wordpress/ui, added @wordpress/widget-primitives.
• Removed the js-packages/storybook changelog entry (that project has no code changes).

Verification

• eslint — clean on the widget + shared file.
• tsgo typecheck (@automattic/jetpack-premium-analytics) — clean.
• No SCSS in this widget (stylelint N/A).
• widget-audit: PASS (no judgment findings; the only mechanical items were the ones above).
• Storybook (local): Default renders the $128.54 metric; WithComparison renders the value + +18% delta with the comparative line chart (solid current / dashed prior period, area fill, axes, legend); WidgetDashboardWithWidget renders the widget inside the host dashboard card. Console shows only the shared-harness baseline warnings (useRouter / useGlobalError), identical to the payment-status sibling — no widget-specific errors.
• CI green on the pre-rebase run; re-running on the rebased branch.

Screen.Recording.2026-07-02.at.5.32.45.PM.mov