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-settings-api/.gitignore

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+/build

feature-settings-api/build.gradle

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+apply plugin: 'kotlin-parcelize'
+
+android {
+    namespace 'io.novafoundation.nova.feature_settings_api'
+}
+
+dependencies {
+    implementation coroutinesDep
+    implementation project(":common")
+
+    implementation coroutinesDep
+
+    implementation androidDep
+    implementation materialDep
+    implementation constraintDep
+
+    testImplementation jUnitDep
+    testImplementation mockitoDep
+}

feature-settings-api/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

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

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+</manifest>

feature-settings-api/src/main/java/io/novafoundation/nova/feature_settings_api/SettingsFeatureApi.kt

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+package io.novafoundation.nova.feature_settings_api
+
+interface SettingsFeatureApi