Remove firebase analytics/gms code, update libraries/build, target Android 17, & more

Note: As code is committed upstream, this commit may be rebased
over newer code, so updates to this branch may require --force . Also
note that ml kit (closed source) claims to send telemetry, and other
dependencies used by this app may do so as well- see README for details.

Changes include:

Privacy & Analytics
* Strip out Firebase Analytics, Play Services Measurement, and Firebase Cloud Messaging from app code (dependencies remain, see Warning above)
* Strip out Android Tools developer analytics
* Request mlkit not to send analytics and add some manifest/proguard build filters remove AD_ID permissions, disable auto app-backups, etc. in AndroidManifest.xml to help with privacy (additional ideas for this are invited!)
Dependencies & Libraries
* Switch from GMS play-services-tflite to standalone TFLite
* Add missing libraries (e.g., documentfile)
* Update most libraries to their latest versions
* Fix build issues with new protobuf 0.9.6 and newest AGP
* Migrate from kapt to ksp
Build Configuration
* Upgrade to Gradle 9.5.1
* Target SDK 37 (Android 17)
* Turn off cloud app backup
* Enable minification and shrinkResources for release builds
* Add ProGuard rules to allow installRelease build to complete
* Auto-copy extra featured skills into the APK
Language & Runtime
* Update Kotlin to 2.4.0
* Update Java from 11 to 21
UI / UX
* Remove onboarding Play ToC agreement (Play-related class was removed, but the agreement is still available for review in the menu)
* Update to Material 3 DayNight theme
* Add build timestamp to Settings screen
Features & Functionality
* Selectable GitHub-based model lists (if you want to extend beyond the official list)
* Added the 12B Gemma-4 model (for systems with 12GB+ memory)
* Added abliterated model option to menu. See related licenses and terms of use before using, and you agree to them use entirely at your own risk.
* Larger context windows (may break functionality if you exceed context though)
* Increased constants for images, audio, and more
* Speculative Decoding (MTP) enabled by default on supported models

Author: fat-tire

.gitignore

@@ -1 +1,2 @@
 .DS_Store
+**/.gradle

Android/src/.gitignore

@@ -13,19 +13,39 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ==============================================================================
+
+# Gradle files
+.gradle/
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Log/OS Files
+*.log
+
+# Android Studio generated files and folders
+captures/
+.externalNativeBuild/
+.cxx/
+*.apk
+output.json
+
+# IntelliJ
 *.iml
+.idea/
+misc.xml
+deploymentTargetDropDown.xml
+render.experimental.xml
+
+# Keystore files
+*.jks
+*.keystore
+
+# Google Services (e.g. APIs or Firebase)
+google-services.json
+
+# Android Profiling
+*.hprof
 
-.gradle
-/local.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
 .DS_Store
-/build
-/captures
-.externalNativeBuild
-.cxx
-local.properties

Android/src/app/build.gradle.kts

@@ -13,19 +13,18 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
 
 plugins {
   alias(libs.plugins.android.application)
-  // Note: set apply to true to enable google-services (requires google-services.json).
-  alias(libs.plugins.google.services) apply false
-  alias(libs.plugins.kotlin.android)
   alias(libs.plugins.kotlin.compose)
   alias(libs.plugins.kotlin.serialization)
   alias(libs.plugins.protobuf)
   alias(libs.plugins.hilt.application)
   alias(libs.plugins.oss.licenses)
   alias(libs.plugins.ksp)
-  kotlin("kapt")
 }
 
 android {
@@ -49,27 +48,36 @@ android {
     buildConfigField("String", "FEEDBACK_API_KEY", "\"\"")
 
     testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
-  }
 
+    var buildDate = SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US).format(Date())
+    buildConfigField("String", "BUILD_DATE_TIME", "\"$buildDate\"")
+  }
   buildTypes {
     release {
-      isMinifyEnabled = false
+      isMinifyEnabled = true
+      isShrinkResources = true
       proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
       signingConfig = signingConfigs.getByName("debug")
     }
   }
   compileOptions {
-    sourceCompatibility = JavaVersion.VERSION_11
-    targetCompatibility = JavaVersion.VERSION_11
-  }
-  kotlinOptions {
-    jvmTarget = "11"
-    freeCompilerArgs += "-Xcontext-receivers"
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
   }
   buildFeatures {
     compose = true
     buildConfig = true
   }
+
+  tasks.named("preBuild") {
+    dependsOn(syncFeaturedSkills)
+  }
+}
+
+val syncFeaturedSkills = tasks.register<Copy>("syncFeaturedSkills") {
+  description = "Move external skills into build"
+    from("../../../skills/featured")
+  into("src/main/assets/skills")
 }
 
 dependencies {
@@ -94,30 +102,25 @@ dependencies {
   implementation(libs.litertlm)
   implementation(libs.commonmark)
   implementation(libs.richtext)
-  implementation(libs.tflite)
-  implementation(libs.tflite.gpu)
-  implementation(libs.tflite.support)
   implementation(libs.camerax.core)
   implementation(libs.camerax.camera2)
   implementation(libs.camerax.lifecycle)
   implementation(libs.camerax.view)
+  //noinspection LoginCredentials
   implementation(libs.openid.appauth)
   implementation(libs.androidx.splashscreen)
   implementation(libs.protobuf.javalite)
+  implementation(libs.protobuf.kotlinlite)
+  implementation(libs.androidx.documentfile)
   implementation(libs.hilt.android)
   implementation(libs.hilt.navigation.compose)
   implementation(libs.play.services.oss.licenses)
-  implementation(platform(libs.firebase.bom))
-  implementation(libs.firebase.analytics)
-  implementation(libs.firebase.messaging)
   implementation(libs.androidx.exifinterface)
   implementation(libs.moshi.kotlin)
-  kapt(libs.hilt.android.compiler)
+  ksp(libs.hilt.android.compiler)
   testImplementation(libs.junit)
   androidTestImplementation(libs.androidx.junit)
   androidTestImplementation(libs.androidx.espresso.core)
-  androidTestImplementation(platform(libs.androidx.compose.bom))
-  androidTestImplementation(libs.androidx.ui.test.junit4)
   androidTestImplementation(libs.hilt.android.testing)
   debugImplementation(libs.androidx.ui.tooling)
   debugImplementation(libs.androidx.ui.test.manifest)
@@ -129,6 +132,20 @@ dependencies {
 }
 
 protobuf {
-  protoc { artifact = "com.google.protobuf:protoc:4.26.1" }
-  generateProtoTasks { all().forEach { it.plugins { create("java") { option("lite") } } } }
+  protoc { artifact = "com.google.protobuf:protoc:${libs.protobuf.javalite.get().version}" }
+  generateProtoTasks { all().forEach { task -> task.builtins { create("java") { option("lite") } } } }
+
+  gradle.taskGraph.whenReady {
+    allTasks.forEach { task ->
+      if (task.name.contains("ossLicensesTask", ignoreCase = true)) {
+        task.enabled = false
+      }
+    }
+  }
+}
+
+configurations.all {
+  resolutionStrategy {
+    force(libs.kotlin.metadata.jvm)
+  }
 }

Android/src/app/proguard-rules.pro

@@ -0,0 +1,110 @@
+# Proguard configuration for Gson
+# Gson uses generic type information stored in a class file when working
+# with fields. Proguard removes such information by default, so configure it
+# to keep all of it.
+-keepattributes Signature
+
+# For using GSON @Expose annotation
+-keepattributes *Annotation*
+
+# Gson specific classes
+-dontwarn sun.misc.**
+#-keep class com.google.gson.stream.** { *; }
+
+# Prevent R8 from leaving Data object members always null
+-keepclassmembers,allowobfuscation class * {
+  @com.google.gson.annotations.SerializedName <fields>;
+}
+
+# Keep class TypeToken (respectively its generic signature)
+-keep class com.google.gson.reflect.TypeToken { *; }
+
+# Keep any (anonymous) classes extending TypeToken
+-keep class * extends com.google.gson.reflect.TypeToken
+
+# Application classes that will be serialized/deserialized over Gson
+-keep class com.google.ai.edge.gallery.data.AllowedModel { *; }
+-keep class com.google.ai.edge.gallery.data.ModelAllowlist { *; }
+-keep class com.google.ai.edge.gallery.data.DefaultConfig { *; }
+-keepclassmembers class com.google.ai.edge.gallery.data.AllowedModel { <fields>; }
+-keepclassmembers class com.google.ai.edge.gallery.data.ModelAllowlist { <fields>; }
+-keepclassmembers class com.google.ai.edge.gallery.data.DefaultConfig { <fields>; }
+
+# Keep mediapipe tasks classes.
+-keep public class com.google.mediapipe.tasks.** {
+  *;
+}
+
+# Additional flags to pass to Proguard when processing a binary that uses
+# MediaPipe.
+
+# Keep public members of our public interfaces. This also prevents the
+# obfuscation of the corresponding methods in classes implementing them,
+# such as implementations of PacketCallback#process.
+-keep public interface com.google.mediapipe.framework.* {
+  public *;
+}
+
+# This method is invoked by native code.
+-keep public class com.google.mediapipe.framework.Packet {
+  public static *** create(***);
+  public long getNativeHandle();
+  public void release();
+}
+
+# This method is invoked by native code.
+-keep public class com.google.mediapipe.framework.PacketCreator {
+  *** releaseWithSyncToken(...);
+}
+
+# This method is invoked by native code.
+-keep public class com.google.mediapipe.framework.MediaPipeException {
+  <init>(int, byte[]);
+}
+
+# Required to use PacketCreator#createProto
+-keep class com.google.mediapipe.framework.ProtoUtil$SerializedMessage { *; }
+
+-keep class com.google.ai.edge.gallery.proto.** { *; }
+
+-keep class com.google.protobuf.** { *; }
+
+-keepclassmembers class * extends com.google.protobuf.GeneratedMessageLite {
+    <fields>;
+}
+
+-keep class androidx.datastore.** { *; }
+
+-keep class com.google.ai.edge.litert.** { *; }
+-keep class com.google.ai.edge.litertlm.** { *; }
+
+-keep class * implements com.google.ai.edge.litertlm.** { *; }
+
+-keep class com.google.ai.edge.gallery.runtime.LlmModelHelper { *; }
+-keep class com.google.ai.edge.gallery.ui.llmchat.LlmChatTask { *; }
+
+-keepclasseswithmembernames class * {
+    native <methods>;
+}
+-keep class com.google.ai.edge.gallery.tools.** { *; }
+
+-keepclassmembers class * {
+    @com.google.ai.edge.litertlm.Tool <methods>;
+    @com.google.ai.edge.litertlm.Tool <fields>;
+}
+
+-keepclassmembers class com.google.ai.edge.gallery.tools.params.** {
+    <fields>;
+    <init>(...);
+}
+
+-keepattributes Signature, AnnotationDefault, EnclosingMethod, InnerClasses
+
+
+# removing analytics is fine
+-dontwarn com.google.android.gms.measurement.**
+-dontwarn com.google.firebase.analytics.**
+-assumenosideeffects class com.google.android.gms.measurement.** { *; }
+-assumenosideeffects class com.google.firebase.analytics.** { *; }
+
+-dontobfuscate