Update mobile builds and chat reveal flow

Co-authored-by: Claude <noreply@anthropic.com>

apps/mobile/android/app/build.gradle

@@ -1,7 +1,6 @@
 apply plugin: "com.android.application"
 apply plugin: "org.jetbrains.kotlin.android"
 apply plugin: "com.facebook.react"
-apply plugin: "com.google.gms.google-services"
 
 def projectRoot = rootDir.getAbsoluteFile().getParentFile().getAbsolutePath()
 
@@ -104,19 +103,15 @@ android {
             keyAlias 'androiddebugkey'
             keyPassword 'android'
         }
-        release {
-            storeFile file('../sauci-release.keystore')
-            storePassword "create01"
-            keyAlias 'sauci'
-            keyPassword "create01"
-        }
     }
     buildTypes {
         debug {
             signingConfig signingConfigs.debug
         }
         release {
-            signingConfig signingConfigs.release
+            // Caution! In production, you need to generate your own keystore file.
+            // see https://reactnative.dev/docs/signed-apk-android.
+            signingConfig signingConfigs.debug
             shrinkResources (findProperty('android.enableShrinkResourcesInReleaseBuilds')?.toBoolean() ?: false)
             minifyEnabled enableProguardInReleaseBuilds
             proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
@@ -181,3 +176,5 @@ dependencies {
         implementation jscFlavor
     }
 }
+
+apply plugin: 'com.google.gms.google-services'