Make the release build traceable: profileable, with composable names

System Tracing on the phone only records an app's own trace sections when
the app is debuggable or profileable, and the phone runs a build that is
neither once release builds exist. profileable shell="true" admits shell
profilers and nothing else. runtime-tracing names composables inside those
sections and is inert until a trace is recording.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

app/androidApp/build.gradle.kts

@@ -137,6 +137,7 @@ dependencies {
     coreLibraryDesugaring(libs.desugar.jdk.libs)
 
     implementation(libs.compose.runtime)
+    implementation(libs.compose.runtime.tracing)
     implementation(libs.compose.foundation)
     implementation(libs.compose.material3)
     implementation(libs.compose.ui)