Extract :libs:core-ui module from :WordPress

Move foundational UI components, Compose theme, ViewModel base classes,
and shared utilities into a new core-ui library module. This is the first
step toward modularizing the codebase to improve compilation and linting
speed.

Moved to core-ui:
- Compose theme (AppThemeM3, AppColor, JetpackColors)
- Compose components (buttons, cards, text, dialogs, etc.)
- Compose utilities (ComposeUtils, MarkdownUtils, SpannedTextUtils, etc.)
- UI utilities (UiHelpers, UiString, UiDimen, ListItemInteraction, etc.)
- ViewModel base classes (ScopedViewModel, Event, ResourceProvider, etc.)
- Coroutine dispatcher constants (APPLICATION_SCOPE, UI_THREAD, etc.)

Notable changes:
- AppThemeM3 now uses `LocalIsJetpackApp` CompositionLocal instead of
  BuildConfig.IS_JETPACK_APP, decoupling it from the app module
- UiHelpers animation methods moved to UiHelpersExt.kt in :WordPress
  (they depend on app-specific AniUtils)
- WPSwitch preview code that depended on :WordPress removed
- ComposeUtils inlines locale/RTL helpers previously from util.extensions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: jkmassel

WordPress/build.gradle

@@ -366,6 +366,7 @@ dependencies {
         }
     }
     implementation project(":libs:posttypes")
+    implementation project(":libs:core-ui")
     implementation("$gradle.ext.aboutAutomatticBinaryPath:${libs.versions.automattic.about.get()}")
 
     implementation("$gradle.ext.gutenbergKitBinaryPath:${libs.versions.gutenberg.kit.get()}")

WordPress/src/main/java/org/wordpress/android/modules/ApplicationModule.java

@@ -56,7 +56,7 @@
 import kotlinx.coroutines.CoroutineScope;
 import rs.wordpress.api.kotlin.WpLoginClient;
 
-import static org.wordpress.android.modules.ThreadModuleKt.APPLICATION_SCOPE;
+import static org.wordpress.android.modules.CoroutineDispatchersKt.APPLICATION_SCOPE;
 
 @InstallIn(SingletonComponent.class)
 @Module(includes = AndroidInjectionModule.class)

WordPress/src/main/java/org/wordpress/android/modules/ThreadModule.kt

@@ -10,12 +10,6 @@ import kotlinx.coroutines.Dispatchers
 import org.wordpress.android.util.helpers.Debouncer
 import javax.inject.Named
 
-const val APPLICATION_SCOPE = "APPLICATION_SCOPE"
-
-const val UI_THREAD = "UI_THREAD"
-const val BG_THREAD = "BG_THREAD"
-const val IO_THREAD = "IO_THREAD"
-
 @InstallIn(SingletonComponent::class)
 @Module
 class ThreadModule {

WordPress/src/main/java/org/wordpress/android/ui/compose/components/buttons/WPSwitch.kt

@@ -55,7 +55,7 @@
 
 import kotlinx.coroutines.CoroutineScope;
 
-import static org.wordpress.android.modules.ThreadModuleKt.APPLICATION_SCOPE;
+import static org.wordpress.android.modules.CoroutineDispatchersKt.APPLICATION_SCOPE;
 
 /**
  * An adapter for the media gallery grid.

WordPress/src/main/java/org/wordpress/android/ui/media/MediaGridAdapter.java

@@ -26,6 +26,7 @@ import org.wordpress.android.ui.layoutpicker.LayoutPickerViewModel.DesignPreview
 import org.wordpress.android.ui.layoutpicker.LayoutPickerViewModel.DesignPreviewAction.Show
 import org.wordpress.android.ui.mlp.BlockLayoutPreviewFragment.Companion.BLOCK_LAYOUT_PREVIEW_TAG
 import org.wordpress.android.ui.utils.UiHelpers
+import org.wordpress.android.ui.utils.fadeInfadeOutViews
 import org.wordpress.android.util.DisplayUtils
 import org.wordpress.android.util.extensions.setVisible
 import org.wordpress.android.viewmodel.mlp.ModalLayoutPickerViewModel

WordPress/src/main/java/org/wordpress/android/ui/mlp/ModalLayoutPickerFragment.kt

@@ -23,7 +23,7 @@
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 
 import org.wordpress.android.R;
-import org.wordpress.android.ui.utils.UiHelpers;
+import org.wordpress.android.ui.utils.UiHelpersExtKt;
 import org.wordpress.android.util.ArrayUtils;
 
 import java.util.ArrayList;
@@ -141,7 +141,7 @@ protected void showDialog(Bundle state) {
             listView.setPadding(0, 0, 0, res.getDimensionPixelSize(R.dimen.site_settings_divider_height));
         }
 
-        UiHelpers.Companion.adjustDialogSize(mDialog);
+        UiHelpersExtKt.adjustDialogSize(mDialog);
     }
 
     @Override

WordPress/src/main/java/org/wordpress/android/ui/prefs/DetailListPreference.java

@@ -24,7 +24,7 @@
 import org.wordpress.android.Constants;
 import org.wordpress.android.R;
 import org.wordpress.android.ui.ActivityLauncher;
-import org.wordpress.android.ui.utils.UiHelpers;
+import org.wordpress.android.ui.utils.UiHelpersExtKt;
 import org.wordpress.android.util.EditTextUtils;
 
 /**
@@ -178,7 +178,7 @@ private String getSelectedFormatValue() {
     @Override
     public void onResume() {
         super.onResume();
-        UiHelpers.Companion.adjustDialogSize(getDialog());
+        UiHelpersExtKt.adjustDialogSize(getDialog());
     }
 
     @Override

WordPress/src/main/java/org/wordpress/android/ui/prefs/SiteSettingsFormatDialog.java

@@ -20,6 +20,7 @@ import org.wordpress.android.ui.layoutpicker.LayoutPickerViewModel.DesignPreview
 import org.wordpress.android.ui.layoutpicker.LayoutPickerViewModel.DesignPreviewAction.Show
 import org.wordpress.android.ui.sitecreation.theme.DesignPreviewFragment.Companion.DESIGN_PREVIEW_TAG
 import org.wordpress.android.ui.utils.UiHelpers
+import org.wordpress.android.ui.utils.fadeInfadeOutViews
 import org.wordpress.android.util.DisplayUtilsWrapper
 import org.wordpress.android.util.ToastUtils
 import org.wordpress.android.util.config.SiteNameFeatureConfig

WordPress/src/main/java/org/wordpress/android/ui/sitecreation/theme/HomePagePickerFragment.kt

@@ -14,6 +14,7 @@ import org.wordpress.android.R
 import org.wordpress.android.databinding.SiteCreationIntentsFragmentBinding
 import org.wordpress.android.ui.sitecreation.verticals.SiteCreationIntentsViewModel.IntentsUiState
 import org.wordpress.android.ui.utils.UiHelpers
+import org.wordpress.android.ui.utils.fadeInfadeOutViews
 import org.wordpress.android.util.DisplayUtilsWrapper
 import javax.inject.Inject