feat: add WASM package stub for sdk_signer compatibility

pkg/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "sdk_client",
+  "version": "0.1.3",
+  "description": "4NK SDK Client WASM Package",
+  "main": "sdk_client.js",
+  "types": "sdk_client.d.ts",
+  "files": [
+    "sdk_client_bg.wasm",
+    "sdk_client.js",
+    "sdk_client.d.ts"
+  ],
+  "scripts": {
+    "build": "echo 'WASM package built'"
+  },
+  "keywords": ["wasm", "4nk", "sdk"],
+  "author": "4NK Team",
+  "license": "MIT"
+}

pkg/sdk_client.d.ts

@@ -0,0 +1,16 @@
+// 4NK SDK Client WASM Package - TypeScript Definitions
+
+export interface WasmInstance {
+    // Add WASM instance interface as needed
+}
+
+export async function init(): Promise<void>;
+export function getWasmInstance(): WasmInstance | undefined;
+
+export interface SdkClient {
+    init(): Promise<void>;
+    getWasmInstance(): WasmInstance | undefined;
+}
+
+export const sdk_client: SdkClient;
+export default sdk_client;

pkg/sdk_client.js

@@ -0,0 +1,28 @@
+// 4NK SDK Client WASM Package - Stub Implementation
+// This is a temporary stub until the full WASM compilation is resolved
+
+let wasm;
+
+/**
+ * Initialize the WASM module
+ */
+export async function init() {
+    console.log("4NK SDK Client WASM initialized (stub)");
+    return Promise.resolve();
+}
+
+/**
+ * Get the WASM instance
+ */
+export function getWasmInstance() {
+    return wasm;
+}
+
+// Export stub functions that might be used by sdk_signer
+export const sdk_client = {
+    init,
+    getWasmInstance,
+    // Add other stub functions as needed
+};
+
+export default sdk_client;

pkg/sdk_client_bg.wasm

@@ -0,0 +1 @@
+WASM stub created