**feat(tests): add tests for TextEncoder, TensorFlow.js, and fallback mechanisms**

- Introduced `test-fallback-function.js` and `test-fallback-simple.js` to validate `executeInThread` fallback functionality with both named and anonymous compute-intensive functions.
- Added `test-tensorflow-textencoder.js` for TensorFlow.js and TextEncoder tests in a Node.js environment.
- Created `test-tensorflow-textencoder.html` for browser-based TensorFlow.js and TextEncoder tests.
- Implemented cross-environment test support in `cli-package/src/test-tensorflow-textencoder.ts` for CLI functionality.
- Enhanced `src/utils/embedding.ts`, `textEncoding.ts`, and `brainy-wrapper.js` to include updated global `TextEncoder` and `TextDecoder` utilities for compatibility and worker improvements.
- Standardized and expanded utility methods in `PlatformNode` for broader support, including `isFloat32Array` and `isTypedArray` checks.
- Updated Node.js requirement to `>= 24.4.0` across documentation and configuration files for compatibility improvements.

This update introduces comprehensive testing for fallback mechanisms, TensorFlow.js, and TextEncoder across multiple environments, ensuring robustness and compatibility.

src/types/tensorflowTypes.ts

@@ -5,8 +5,9 @@
 
 // Define the shape of the util object used for TensorFlow.js compatibility
 export interface TensorFlowUtilObject {
-  isFloat32Array: (arr: unknown) => boolean
-  isTypedArray: (arr: unknown) => boolean
+  isFloat32Array?: (arr: unknown) => boolean
+  isTypedArray?: (arr: unknown) => boolean
+
   [key: string]: unknown
 }
 
@@ -14,12 +15,14 @@ export interface TensorFlowUtilObject {
 export interface PlatformNodeObject {
   isFloat32Array?: (arr: unknown) => boolean
   isTypedArray?: (arr: unknown) => boolean
+
   [key: string]: unknown
 }
 
 // Define the shape of the tf object that might exist in global
 export interface TensorFlowObject {
   util?: TensorFlowUtilObject
+
   [key: string]: unknown
 }
 
@@ -32,4 +35,15 @@ declare global {
   interface WorkerGlobalScope {
     importTensorFlow?: () => Promise<any>
   }
+
+  // Declare types for the global object and globalThis
+  var global: {
+    util?: TensorFlowUtilObject
+    [key: string]: any
+  }
+
+  var globalThis: {
+    util?: TensorFlowUtilObject
+    [key: string]: any
+  }
 }