feat(widget): Migrate from RemoteViews to Jetpack Glance

Replace the legacy AppWidgetProvider/RemoteViews implementation with Glance AppWidget for reactive updates, proper centering, and a unified render state model.

- Add BatteryGlanceWidget with collectAsState for live device/profile/upgrade data

- Add WidgetRenderState sealed class and WidgetRenderStateMapper

- Add GlanceWidgetContent (Glance composables) and ComposeWidgetPreview (config preview)

- Fix centering by passing spacing via modifier param (no trailing padding on last item)

- Remove old XML widget layouts and RemoteViews rendering code

buildSrc/src/main/java/Dependencies.kt

@@ -130,6 +130,11 @@ fun DependencyHandlerScope.addSerialization() {
     implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:${Versions.Serialization.core}")
 }
 
+fun DependencyHandlerScope.addGlance() {
+    implementation("androidx.glance:glance-appwidget:${Versions.Glance.core}")
+    implementation("androidx.glance:glance-material3:${Versions.Glance.core}")
+}
+
 fun DependencyHandlerScope.addTesting() {
     testImplementation("junit:junit:4.13.2")
 

buildSrc/src/main/java/Versions.kt

@@ -22,6 +22,10 @@ object Versions {
         const val core = "1.0.0"
     }
 
+    object Glance {
+        const val core = "1.2.0-rc01"
+    }
+
     object Serialization {
         const val core = "1.9.0"
     }