Refresh the Flutter snapshot: v3 tickets V3-04 through V3-16, plus a fresh installable APK

V3-04 through V3-07, V3-10, V3-16 shipped complete; V3-11/V3-12/V3-14 shipped code-complete pending device/account verification; V3-08/V3-09 deferred behind a new V3-17 (self-hosted OSRM investigation). 316 tests passing, up from 221.

The APK is a fresh release build (debug-signed, no release signing config exists yet) with two build fixes applied: core library desugaring enabled for flutter_local_notifications, and sentry_flutter bumped to 9.27.0 (8.14.2's bundled Kotlin plugin was incompatible with this project's Kotlin 2.4.0 toolchain).

rippr-flutter-src/android/app/build.gradle.kts

@@ -12,6 +12,8 @@ android {
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
+        // flutter_local_notifications (V3-06) requires this on API levels below 33.
+        isCoreLibraryDesugaringEnabled = true
     }
 
     defaultConfig {
@@ -44,6 +46,10 @@ kotlin {
     }
 }
 
+dependencies {
+    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.4")
+}
+
 flutter {
     source = "../.."
 }