[WOOMOB-2067] Wire FTS search to product search UI

[kidinov]

Closes WOOMOB-2067

Description

Wires the FTS (Full Text Search) results — including product variations — to the existing POS product search UI. When the POS_PRODUCTS_FTS feature flag is enabled:

• Search results now include variations alongside simple and variable products
• Variation search results display parent product name as the title, variation attributes as subtitle, and price below
• Clicking a variation in search results adds it directly to the cart
• Search placeholder updates to "Search products and variations"

Key implementation details:

• Converted WooPosProductType from enum to sealed class so Variation can carry parentProductName with compile-time safety
• Introduced VariationSearchResult view state type to cleanly separate search result variations (with parent name) from variation list variations (without)
• Parent product name flows from FTS entity through the mapper to the UI layer

Test Steps

1. Enable POS_PRODUCTS_FTS feature flag
2. Open POS and tap the search bar
3. Verify placeholder reads "Search products and variations"
4. Search for a term that matches a variation (e.g. a color or size attribute)
5. Verify variation results show: parent product name (title), attributes (subtitle), price
6. Tap a variation result → verify it's added to cart
7. Disable feature flag → verify search placeholder reverts to "Search products" and no variations appear

Images/gif

To be added

• I have considered if this change warrants release notes and have added them to RELEASE-NOTES.txt if necessary. Use the "[Internal]" label for non-user-facing changes.

[dangermattic]

	1 Message
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[wpmobilebot]

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

	App Name	WooCommerce-Wear Android
	Platform	⌚️ Wear OS
	Flavor	Jalapeno
	Build Type	Debug
	Commit	f79f044
	Direct Download	woocommerce-wear-prototype-build-pr15290-f79f044.apk

[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
	Commit	f79f044
	Direct Download	woocommerce-prototype-build-pr15290-f79f044.apk

[codecov-commenter]

Codecov Report

❌ Patch coverage is 52.63158% with 63 lines in your changes missing coverage. Please review.
✅ Project coverage is 38.84%. Comparing base (7badb81) to head (f79f044).

Files with missing lines	Patch %	Lines
...ce/android/ui/woopos/home/items/WooPosItemsList.kt	0.00%	38 Missing ⚠️
...os/home/items/search/WooPosItemsSearchViewModel.kt	69.04%	11 Missing and 2 partials ⚠️
...pos/home/items/products/WooPosProductsViewModel.kt	25.00%	2 Missing and 1 partial ⚠️
...items/search/WooPosProductsSearchInDbDataSource.kt	0.00%	3 Missing ⚠️
...id/ui/woopos/home/items/WooPosItemsSearchHelper.kt	60.00%	1 Missing and 1 partial ⚠️
...home/items/variations/WooPosVariationsViewModel.kt	0.00%	0 Missing and 2 partials ⚠️
...pos/common/data/models/WooPosProductModelMapper.kt	90.90%	1 Missing ⚠️
.../store/pos/localcatalog/WooPosLocalCatalogStore.kt	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@                                            Coverage Diff                                             @@
##             woomob-2066-woo-posfts-implement-search-query-with-relevance-ranking   #15290      +/-   ##
==========================================================================================================
- Coverage                                                                   38.85%   38.84%   -0.01%     
- Complexity                                                                  10676    10677       +1     
==========================================================================================================
  Files                                                                        2208     2208              
  Lines                                                                      125600   125684      +84     
  Branches                                                                    17424    17439      +15     
==========================================================================================================
+ Hits                                                                        48797    48827      +30     
- Misses                                                                      71846    71898      +52     
- Partials                                                                     4957     4959       +2     

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