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

bindings/hydra-dx-math/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest />

bindings/hydra-dx-math/src/main/java/io/novafoundation/nova/hydra_dx_math/HydraDxMathConversions.kt

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+package io.novafoundation.nova.hydra_dx_math
+
+import io.novafoundation.nova.common.utils.atLeastZero
+import java.math.BigInteger
+
+object HydraDxMathConversions {
+
+    fun String.fromBridgeResultToBalance(): BigInteger? {
+        return if (this == "-1") null else toBigInteger().atLeastZero()
+    }
+}

bindings/hydra-dx-math/src/main/java/io/novafoundation/nova/hydra_dx_math/stableswap/StableSwapMathBridge.java

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+package io.novafoundation.nova.hydra_dx_math.stableswap;
+
+public class StableSwapMathBridge {
+
+    static {
+        System.loadLibrary("hydra_dx_math_java");
+    }
+
+    public static native String calculate_out_given_in(
+        String reserves,
+        int asset_in,
+        int asset_out,
+        String amount_in,
+        String amplification,
+        String fee,
+        String pegs
+    );
+
+    public static native String calculate_in_given_out(
+        String reserves,
+        int asset_in,
+        int asset_out,
+        String amount_out,
+        String amplification,
+        String fee,
+        String pegs
+    );
+
+    public static native String calculate_amplification(
+        String initial_amplification,
+        String final_amplification,
+        String initial_block,
+        String final_block,
+        String current_block
+    );
+
+    public static native String calculate_shares(
+        String reserves,
+        String assets,
+        String amplification,
+        String share_issuance,
+        String fee,
+        String pegs
+    );
+
+    public static native String calculate_shares_for_amount(
+        String reserves,
+        int asset_in,
+        String amount,
+        String amplification,
+        String share_issuance,
+        String fee,
+        String pegs
+    );
+
+    public static native String calculate_add_one_asset(
+        String reserves,
+        String shares,
+        int asset_in,
+        String amplification,
+        String share_issuance,
+        String fee,
+        String pegs
+    );
+
+    public static native String calculate_liquidity_out_one_asset(
+        String reserves,
+        String shares,
+        int asset_out,
+        String amplification,
+        String share_issuance,
+        String withdraw_fee,
+        String pegs
+    );
+}

bindings/hydra-dx-math/src/main/java/io/novafoundation/nova/hydra_dx_math/xyk/HYKSwapMathBridge.java

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+package io.novafoundation.nova.hydra_dx_math.xyk;
+
+public class HYKSwapMathBridge {
+
+    static {
+        System.loadLibrary("hydra_dx_math_java");
+    }
+
+    public static native String calculate_out_given_in(
+        String balanceIn,
+        String balanceOut,
+        String amountIn
+    );
+
+    public static native String calculate_in_given_out(
+        String balanceIn,
+        String balanceOut,
+        String amountOut
+    );
+
+    public static native String calculate_pool_trade_fee(
+        String amount,
+        String feeNumerator,
+        String feeDenominator
+    );
+}