fix: update all imports and references from BrainyData to Brainy

- Fixed imports in examples/tests/ to use correct Brainy import
- Fixed imports in tests/benchmarks/ to use correct paths
- Updated bin/brainy-interactive.js to use Brainy instead of BrainyData
- Corrected documentation references throughout codebase
- Removed duplicate imports in benchmark files
- All files now consistently use 'Brainy' class from dist/index.js

examples/tests/test-quick.js

@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 
 // Quick test to verify Brainy works without running full test suite
-import { BrainyData } from './dist/index.js'
+import { Brainy } from './dist/index.js'
 
 console.log('🧪 Quick Brainy Test')
 console.log('====================')
@@ -10,7 +10,7 @@ async function quickTest() {
   try {
     // Test 1: Initialize
     console.log('\n1. Initializing Brainy...')
-    const brain = new BrainyData({ 
+    const brain = new Brainy({ 
       storage: { forceMemoryStorage: true },
       verbose: false 
     })