Initial commit: Pezkuwi Wallet Android

Security hardened release:
- Code obfuscation enabled (minifyEnabled=true, shrinkResources=true)
- Sensitive files excluded (google-services.json, keystores)
- Branch.io key moved to BuildConfig placeholder
- Updated dependencies: OkHttp 4.12.0, Gson 2.10.1, BouncyCastle 1.77
- Comprehensive ProGuard rules for crypto wallet
- Navigation 2.7.7, Lifecycle 2.7.0, ConstraintLayout 2.1.4

feature-onboarding-api/.gitignore

@@ -0,0 +1 @@
+/build

feature-onboarding-api/build.gradle

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+
+android {
+    namespace 'io.novafoundation.nova.feature_onboarding_api'
+}
+
+dependencies {
+    implementation project(':feature-account-api')
+}

feature-onboarding-api/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest>
+
+</manifest>

feature-onboarding-api/src/main/java/io/novafoundation/nova/feature_onboarding_api/di/OnboardingFeatureApi.kt

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+package io.novafoundation.nova.feature_onboarding_api.di
+
+interface OnboardingFeatureApi

feature-onboarding-api/src/main/java/io/novafoundation/nova/feature_onboarding_api/domain/OnboardingInteractor.kt

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+package io.novafoundation.nova.feature_onboarding_api.domain
+
+interface OnboardingInteractor {
+
+    suspend fun checkCloudBackupIsExist(): Result<Boolean>
+
+    suspend fun isCloudBackupAvailableForImport(): Boolean
+
+    suspend fun signInToCloud(): Result<Unit>
+}