**refactor(tests): consolidate and replace outdated environment test scripts**

- Removed obsolete scripts: `test-all-environments.js`, `test-fallback-function.js`, `test-fallback-simple.js`, `test-fix.js`, `test-tensorflow-textencoder.js`, `test-unified-encoding.js`, and `test-worker-utils.js`.
- Introduced `scripts/comprehensive-test.js` as a unified testing script covering all environments: Browser, Node.js, and CLI.
- Added `examples/cli-wrapper-example.js` to demonstrate a proper CLI implementation with TensorFlow.js initialization.

This refactor simplifies the testing structure by consolidating redundant scripts into a single comprehensive script while ensuring robust cross-environment coverage.

node-test.js

@@ -0,0 +1,75 @@
+// Node.js test script for @soulcraft/brainy
+
+// CRITICAL: First, directly apply the TensorFlow.js patch
+// This is the most reliable way to ensure the patch is applied before TensorFlow.js is loaded
+import { TextEncoder, TextDecoder } from 'util'
+
+// Make TextEncoder and TextDecoder available globally
+if (typeof global !== 'undefined') {
+  global.TextEncoder = TextEncoder
+  global.TextDecoder = TextDecoder
+}
+
+// Import the library
+import * as brainy from './dist/unified.js'
+
+async function runNodeTest() {
+  console.log('\n=== Testing @soulcraft/brainy in Node.js environment ===\n')
+
+  try {
+    // Test environment detection
+    console.log('Environment Detection:')
+    console.log(`- isBrowser: ${brainy.isBrowser()}`)
+    console.log(`- isNode: ${brainy.isNode()}`)
+    console.log(`- isWebWorker: ${brainy.isWebWorker()}`)
+    console.log(`- areWebWorkersAvailable: ${brainy.areWebWorkersAvailable()}`)
+    console.log(`- isThreadingAvailable: ${brainy.isThreadingAvailable()}`)
+    console.log(
+      `- areWorkerThreadsAvailableSync: ${brainy.areWorkerThreadsAvailableSync()}`
+    )
+
+    // Test TensorFlow functionality
+    console.log('\nTesting TensorFlow functionality...')
+
+    // Create a simple BrainyData instance
+    const data = new brainy.BrainyData({
+      dimensions: 2,
+      metric: 'euclidean'
+    })
+
+    console.log('Successfully created BrainyData instance')
+
+    // Initialize the database
+    console.log('Initializing database...')
+    await data.init()
+
+    // Add a simple vector
+    await data.add([1, 2], { id: 'test1', text: 'Test item' })
+    console.log('Successfully added item to BrainyData')
+
+    // Search for similar vectors
+    const results = await data.search([1, 2], 1)
+    console.log('Search results:', results)
+
+    // Test embedding functionality (which uses TensorFlow)
+    console.log('\nTesting embedding functionality...')
+    const embeddingFunction = brainy.createEmbeddingFunction()
+    const embedding = await embeddingFunction('This is a test sentence')
+    console.log(
+      `Successfully created embedding with length: ${embedding.length}`
+    )
+
+    console.log('\n✅ All Node.js tests passed successfully!')
+    return true
+  } catch (error) {
+    console.error('❌ Node.js test failed:', error)
+    return false
+  }
+}
+
+// Run the test
+runNodeTest().then((success) => {
+  if (!success) {
+    process.exit(1)
+  }
+})