[HACK][Woo POS] PR 3/5: Add WooPos card reader connection dialog and ViewModel

[kidinov]

WOOMOB-1854

Description

Add the UI layer for WooPos card reader connection:

• Connection dialog with all state views (scanning, found, connecting, updating, errors)
• ViewModel that bridges the controller to the UI
• Onboarding activity for payment setup
• String resources for all dialog states

Test Steps

1. Code review only - integration with home screen is in the next PR. Use compose previews as well

• 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]

	2 Errors
🚫	Please add tests for class WooPosCardReaderConnectionViewModel (or add unit-tests-exemption label to ignore this).
🚫	This PR is tagged with status: do not merge label(s).

	1 Warning
⚠️	This PR is larger than 300 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.

Generated by 🚫 Danger

[wpmobilebot]

Project manifest changes for WooCommerce

The following changes in the WooCommerce's merged AndroidManifest.xml file were detected (build variant: vanillaRelease):

--- ./build/reports/diff_manifest/WooCommerce/vanillaRelease/base_manifest.txt	2025-12-09 08:19:56.435194212 +0000
+++ ./build/reports/diff_manifest/WooCommerce/vanillaRelease/head_manifest.txt	2025-12-09 08:20:02.055220396 +0000
@@ -218,7 +218,7 @@
             android:theme="@style/Theme.WooPos"
             android:windowSoftInputMode="adjustResize" />
         <activity
-            android:name="com.woocommerce.android.ui.woopos.cardreader.WooPosCardReaderActivity"
+            android:name="com.woocommerce.android.ui.woopos.cardreader.WooPosCardReaderOnboardingActivity"
             android:theme="@style/Theme.WooPos.Transparent"
             android:windowSoftInputMode="adjustResize" />
         <activity

Go to https://buildkite.com/automattic/woocommerce-android/builds/34305/canvas?sid=019b022d-bbba-4366-86ca-f7358de9da48, click on the Artifacts tab and audit the files.

[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	d84f687
	Direct Download	woocommerce-wear-prototype-build-pr15071-d84f687.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	d84f687
	Direct Download	woocommerce-prototype-build-pr15071-d84f687.apk

[malinajirka]

LGTM - thorough testing will be done later.