[WOOMOB-2397][POS Refunds M2] Part 2: Refunded items UI

[samiuelson]

Description

Adds the UI layer for displaying refunded line items in POS order details. This is the second of two PRs for WOOMOB-2397, building on #15488.

Changes:

• Add ProductsSection composable that handles LineItemsState (loading shimmer / loaded items)
• Add RefundedProductsSection composable for displaying refunded items
• Add ProductsShimmer composable for loading state placeholder
• Extract title parameter in OrdersProducts for reuse between products and refunded sections
• Update previews with refunded items sample data
• Add "Refunded Products" string resource

Testing instructions

1. Open POS and complete an order
2. Issue a partial refund for one item
3. Open order details
4. Verify "Products" section shows non-refunded items
5. Verify "Refunded Products" section appears with refunded items
6. Verify shimmer loading state appears briefly while refund data loads

Images/Gif

Screen_recording_20260306_170224.mp4

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce Android by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce Android
	Platform	📱 Mobile
	Flavor	Jalapeno
	Build Type	Debug
	Build Number	732
	Version	24.3-rc-1
	Application ID	com.woocommerce.android.prealpha
	Commit	3628f02
	Installation URL	08fk144q3h7pg

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 17.14286% with 87 lines in your changes missing coverage. Please review.
✅ Project coverage is 39.53%. Comparing base (969ebd6) to head (3628f02).
⚠️ Report is 26 commits behind head on trunk.

Files with missing lines	Patch %	Lines
...oid/ui/woopos/orders/details/WooPosOrderDetails.kt	0.00%	85 Missing ⚠️
.../woopos/orders/details/WooPosOrderDetailsMapper.kt	88.88%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##              trunk   #15489      +/-   ##
============================================
- Coverage     39.54%   39.53%   -0.02%     
  Complexity    11223    11223              
============================================
  Files          2252     2252              
  Lines        129459   129543      +84     
  Branches      18127    18142      +15     
============================================
+ Hits          51201    51212      +11     
- Misses        73029    73103      +74     
+ Partials       5229     5228       -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[malinajirka]

Thanks @samiuelson !

The changes look good and work as expected. The only thing which feels a bit off to me as a user - not technically related to this PR - is that the product row is without taxes:

[samiuelson]

Thanks for review, @malinajirka!

The changes look good and work as expected. The only thing which feels a bit off to me as a user - not technically related to this PR - is that the product row is without taxes

I'm not sure if it's a good idea, because this would make the display logic inconsistent across Products and Refunded Products sections. In Products totals are displayed without taxes as well.

In the next milestone M3, we are going to show more details of refund:

I think this will solve the issue. Let me know what you think!

[malinajirka]

The changes look good and work as expected. The only thing which feels a bit off to me as a user - not technically related to this PR - is that the product row is without taxes

I'm not sure if it's a good idea, because this would make the display logic inconsistent across Products and Refunded Products sections. In Products totals are displayed without taxes as well.

I wasn't suggesting we should show tax for refunded items but not show it for product items. I just pointed out that this part feels weird to me as a user.

When I have an order with 5 products and no refunds, it's relatively natural, that product rows are without taxes and all taxes are sumed up below. However, when I have an order with 1 product and 2 refunded products, it feels a bit weird. I'm not sure what the solution is though - especially, since the backend likely doesn't tell us per-item-tax.

P.S. I noticed that the Apple ring on this order has negative sign -> we might want to consider using abs here as well.

[samiuelson]

When I have an order with 5 products and no refunds, it's relatively natural, that product rows are without taxes and all taxes are sumed up below. However, when I have an order with 1 product and 2 refunded products, it feels a bit weird. I'm not sure what the solution is though - especially, since the backend likely doesn't tell us per-item-tax.

Got it. To me this feels good enough, assuming we'll have the total taxes shown in the list/details of historical refunds in the Totals section. Though, I'll ask for a designer's feedback during call for testing, likely tomorrow.

P.S. I noticed that the Apple ring on this order has negative sign -> we might want to consider using abs here as well.

This has been fixed within 5f8c4f9.