009: publish AXPR23 final source and public documentation

vendor/sunfish-a16/Android.mk

@@ -96,3 +96,25 @@ include $(BUILD_PREBUILT)
 
 # EuiccGoogle is removed by apply_009_drop_euicc_google.py from
 # vendor/google/sunfish/sunfish-vendor.mk.
+
+# AXPR AOSmium WebView (org.axpos.aosmium_wv), presigned with the AXPR release
+# key. Installed on /product/app (system/system_ext have no room for ~275 MB).
+# It is the default WebView provider via config_webview_packages.xml; AOSP/LOS
+# and Google providers stay in the allowlist.
+include $(CLEAR_VARS)
+LOCAL_MODULE := AosmiumWebView
+LOCAL_MODULE_CLASS := APPS
+LOCAL_PRODUCT_MODULE := true
+LOCAL_CERTIFICATE := PRESIGNED
+LOCAL_SRC_FILES := prebuilt/AosmiumWebView.apk
+LOCAL_REPLACE_PREBUILT_APK_INSTALLED := $(LOCAL_PATH)/prebuilt/AosmiumWebView.apk
+LOCAL_MODULE_SUFFIX := $(COMMON_ANDROID_PACKAGE_SUFFIX)
+# Chromium-built WebView declares these as optional uses-library entries; the
+# ROM does not provide android.ext.adservices or android.test.base, so keep
+# them optional to satisfy enforce_uses_libraries.
+LOCAL_OPTIONAL_USES_LIBRARIES := \
+    android.test.base \
+    androidx.window.extensions \
+    android.ext.adservices
+LOCAL_DEX_PREOPT := false
+include $(BUILD_PREBUILT)